**Dendrocopos scalaris giraudi (Stone).—Specimen examined: one, [Male] 34623, from 12 mi. N, 10 mi. E Parras, 3850 ft., July 12, 1953, weight, 35 gms.

Ridgway (1914:259) reported that D. s. giraudi (then called Dryobates scalaris bairdi) has been recorded from La Ventura, Carneros, and Jaral. Oberholser (1912:159) indicated that the subspecies giraudi occurs north to Jaral in southern Coahuila, east to La Ventura in southeastern Coahuila, and south through central Mexico. The present specimen is darker ventrally than specimens of either D. s. cactophilus or D. s. symplectus, and on its upper surface the black bars are wider than the white. The specimen is in worn plumage, but nevertheless suggests intergradation with D. s. symplectus.

Platypsaris aglaiae albiventris (Lawrence).—The Rose-throated Becard, if it occurs in Coahuila at all, is rare in the State. Without giving any specific locality, Sclater (1857:74) described Pachyrhamphus aglaiae from Coahuila. Hellmayr (1929:202) considered Sclater's record as representing Platypsaris aglaiae albiventris (Lawrence).

*Tyrannus vociferans vociferans (Swainson).—Specimens examined: total 2: [Male] 32064 from 7 mi. S, 4 mi. E Bella Union, 7200 ft., June 24, 1952; and [Female] 31650 from the north foot of Sierra Guadalupe (=10 mi. S, 5 mi. W General Cepeda), 6400 ft., April 15, 1953.

The small number of records of Cassin's Kingbird in Coahuila is surprising, for I would expect the species in most areas of the State between 6000 and 7000 feet. All Coahuilan records are from the southeastern part of the State. Burleigh and Lowery (1942:193) found it "on infrequent occasions in the arid country near Saltillo." Miller, Friedmann, Griscom, and Moore (1957:71) reported that T. v. vociferans nested in Coahuila on July 7. The size of the testes (15x7 mm.) of our specimen from near Bella Union also indicates breeding.

**Muscivora forficata (Gmelin).—Specimen examined: one, [Female] 32063, from 12 mi. N, 12 mi. W Jimenez, 850 ft., June 19, 1952.

The status of the Scissor-tailed Flycatcher in Coahuila is uncertain. Although the condition of the gonads of No. 32063 was not recorded by the collector, the late date (June 19) on which is was obtained suggests that this female was a resident in northeastern Coahuila. Findley saw a Scissor-tailed Flycatcher 2 mi. S and 11 mi. E Nava, 810 feet, on June 15, 1952. Dickerman saw one 4 mi. N San Isidro on May 10, 1954. Miller, Friedmann, Griscom, and Moore (1957:69) recorded this flycatcher from Sabinas on April 12. No other records of Muscivora forficata in Coahuila have come to my attention, but the species probably occurs in the State in migration.

*Myiarchus crinitus crinitus (Linnaeus).—Specimens examined: total 3: [Female] 32065 from 12 mi. N, 12 mi. W Jimenez, 850 ft., June 19, 1952; and [Male] 32066 and [Female] 32067 from 2 mi. W Jimenez, 850 ft., June 20, 1952.

The Great Crested Flycatcher seems to be rare in Coahuila. Nos. 32065-32067 are the first specimens that I know of from Coahuila. Bangs (1898:179-180) said that the subspecies crinitus has an "enormous swollen bill" (exposed culmen of male, 20 mm.; breadth of bill at middle of nostril, 10.3 mm.) whereas M. c. boreus has a "small slender bill" (exposed culmen of male, 18.6 mm.; breadth of bill at middle of nostril, 8.6 mm.). No. 32066 has a large bill (exposed culmen, 21 mm.; breadth of bill at middle of nostril, 10 mm.). Bangs (loc. cit.) did not give any measurements for females of M. c. crinitus or boreus. Nevertheless, I suspect that Nos. 32065 and 32067 represent crinitus (No. 32065: exposed culmen, 19 mm.; breadth of bill at middle of nostril, 9 mm.; No. 32067: exposed culmen, 20 mm.; breadth of bill at middle of nostril, 9.5 mm.). The size of the testes (9 mm. long) of No. 32066 and the dates (June 19 and 20) on which the specimens were collected indicate breeding by this species in the State.

*Myiarchus tyrannulus cooperi Baird.—Specimens examined: total 2: [Male] 32068 and [Female] 32069 from 2 mi. S, 3 mi. E San Juan de Sabinas, 1160 ft., June 22, 1952, measurements: wing, 102, 97 mm.; tail, 93, 90 mm.

Wied's Crested Flycatcher is not common in Coahuila. Eastern Coahuila represents the eastern limit of the range of M. t. cooperi. Measurements of our specimens agree well with the average measurements of typical M. t. cooperi. According to Ridgway (1907:621), M. t. cooperi (then called Myiarchus mexicanus mexicanus) has been recorded from Sabinas. The size of the testes (14x7 mm.) of No. 32068 and the date (June 22) on which the specimens were collected indicate breeding by this species in the State.

*Myiarchus cinerascens cinerascens (Lawrence).—Specimens examined: total 7: [Female] 31045 from 15 mi. SE Boquillas, 1500 ft., March 16, 1952; [Male] 32070 from 12 mi. N, 12 mi. W Jimenez, 850 ft., June 19, 1952; [Female] 32071 from 2 mi. W Jimenez, 850 ft., June 20, 1952; [Male] 35413 from 6 mi. N, 2 mi. W Castillon, 3750 ft., June 30, 1953; [Male] 32072 from 9 mi. S, 11 mi. E Sabinas, June 14, 1952; [Female] 31584 from 17 mi. S Ocampo, 5300 ft., April 7, 1954; and [Male] 31673 from the west foot of Pico de Jimulco, 5000 ft., April 4, 1953.

The Ash-throated Flycatcher is common in Coahuila. All specimens examined by me from there are typical of M. c. cinerascens. Ridgway (1907:626) listed M. c. cinerascens from Monclovia (=Monclova?) and Sabinas. Miller (1955a:166) found the species "only in the oak belt at 5000 feet, where it was common." Burleigh and Lowery (1942:193) recorded M. c. cinerascens from "near Saltillo." Dickerman obtained No. 31584 in a mesquite-grassland-shrubby area. Miller, Friedmann, Griscom, and Moore (1957:78) stated that M. c. cinerascens breeds in Coahuila.

Sayornis phoebe (Latham).—Miller, Friedmann, Griscom, and Moore (1957:66) recorded the Eastern Phoebe from Coahuila on November 4-14.

*Sayornis nigricans semiatra (Vigors).—Specimens examined: total 2: [Female] 31046 from 1 mi. N Boquillas, 700 ft., March 7, 1952; and [Female] 31047 from Fortin (=33 mi. N, 8 mi. W San Geronimo), 3300 ft., March 27, 1952.

Of the Black Phoebe, the two subspecies semiatra and nigricans intergrade in Coahuila. Typical representatives of S. n. semiatra are present in northern Coahuila. The under tail coverts of Nos. 31046-31047 are immaculate and white. Miller (1955:167) noted the two specimens collected from the Sierra del Carmen to have narrow dark shaft streaks on the under tail coverts. He (loc. cit.) remarked also that "the marking of the under tail coverts may indicate a beginning of a gradient in increased darkening of these feathers toward S. n. nigricans in southern Coahuila."

*Sayornis nigricans nigricans (Swainson).—Burleigh and Lowery (1942:193) collected several specimens of S. n. nigricans "on the outskirts of Saltillo" and saw a pair at the Chorro del Agua on April 19.

*Sayornis saya saya (Bonaparte).—Specimens examined: total 4: [Female] 31049 from the Rio Grande (=17 mi. S Dryden, Terrell Co., Texas, in Coahuila), 600 ft., March 18, 1952; sex ? 31048 from 10 mi. S, 5 mi. E Boquillas, 1500 ft., March 4, 1952; [Male] 31050 from Fortin (=33 mi. N, 8 mi. W San Geronimo), 3300 ft., March 29, 1952; and [Female] 32059 from 7 mi. S, 4 mi. E Bella Union, 7200 ft., June 25, 1952.

Say's Phoebe occurs commonly in Coahuila. Miller (1955a:167) obtained a female with an active brood patch in Boquillas Canyon of the Sierra del Carmen, and remarked that Marsh took a juvenile on September 2 at El Rincon. Sutton and Burleigh (1939a:33) saw this phoebe several times in southern Coahuila and obtained a male "near San Pedro" on January 29. Burleigh and Lowery (1942:193) recorded this species as "a common breeding bird both on Diamante Pass and on the arid plateau around Saltillo." No. 32059 was a juvenile.

Empidonax traillii brewsteri Oberholser.—Amadon and Phillips (1947:578) look a Traill Flycatcher of the subspecies brewsteri at Las Delicias on August 11.

Empidonax minimus (Baird and Baird).—Specimen examined: one, [Male] 31470, from Sierra del Pino (=5 mi. S, 3 mi. W Acebuches), 6200 ft., May 13, 1954.

Amadon and Phillips (1947:578) obtained two Least Flycatchers at Las Delicias on August 12. Dickerman took No. 31470 in pine-oak vegetation.

Empidonax hammondii (Xantus).—Specimen examined: one, sex ? 31657, from the north slope of Sierra Guadalupe (=11 mi. S, 7 mi. W General Cepeda), 7800 ft., April 20, 1953.

No. 31657 is similar to E. wrightii (Wright's Flycatcher); however, the outmost (tenth) primary is equal to or slightly larger than the fifth primary. Yet, the underparts of No. 31657 are darker and more uniform in coloration than those of typical representatives of E. wrightii. Miller, Friedmann, Griscom, and Moore (1957:88) stated that Hammond's Flycatcher is "transient" in Coahuila. Burleigh and Lowery (1942:193-194) reported that E. hammondii was the most prevalent of the small flycatchers in southeastern Coahuila. They (loc. cit.) obtained specimens of this flycatcher from the Chorro del Agua and Diamante Pass. Miller (1955a:167) characterized E. hammondii as a common migrant, "chiefly in stands of low oaks in the pine-oak belt but also occasionally in the desert scrub" of the Sierra del Carmen.

Empidonax wrightii Baird.—Amadon and Phillips (1947:578) reported one Wright's Flycatcher from Las Delicias. Miller (1955a:167) stated that this species was a common migrant and occurred chiefly in the lower oak belt and in the desert scrub. Sutton and Burleigh (1939a:34) obtained specimens of E. wrightii from San Pedro on January 29.

Empidonax griseus Brewster.—Sutton and Burleigh (1939a:34) noted that the Gray Flycatcher was common "in the San Pedro region" and collected two at San Pedro on January 29. Burleigh and Lowery (1942:194) collected specimens "near the Chorro del Agua, at Saltillo, and ... in the open desert some twenty miles west of Saltillo."

**Empidonax affinis trepidus Nelson.—Specimen examined: one, [Male] 32750, from 13 mi. E San Antonio de las Alazanas, 9950 ft., July 6, 1955.

Ridgway (1907:576) previously reported the little known and poorly defined Pine Flycatcher from Sierra Guadalupe. Because of its small size (wing, 75 mm.; tail, 65 mm.), No. 32750 is referable to E. a. trepidus. No indication of breeding of the subspecies trepidus exists for Coahuila. Nevertheless, the date (July 6) on which No. 32750 was obtained suggests that this flycatcher may breed in southeastern Coahuila.

*Empidonax difficilis hellmayri Brodkorb.—Specimen examined: one, [Male] 31469, from Sierra del Pino (=5 mi. S, 3 mi. W Acebuches), May 13, 1954, measurements: wing, 71 mm.; tail, 65 mm.; culmen, 11.5 mm.; tarsus, 17.0 mm.

Miller (1955a:167) reported that the Western Flycatcher breeds in the Sierra del Carmen, from 6800 to 7500 feet. According to Miller, Friedmann, Griscom, and Moore (1957:91), this subspecies has been recorded from Sierra Guadalupe. No. 31469 closely resembles, especially in measurements, the specimens of the Western Flycatcher from the Chisos Mountains of Texas as reported by Brodkorb (1935:2).

Empidonax difficilis subsp.—Burleigh and Lowery (1942:194) obtained a specimen of E. difficilis "near the summit of Diamante Pass" that they tentatively identified as E. d. salvini. However, they considered the specimen as possibly E. d. immemoratus or E. d. occidentalis.

Localities listed by Miller, Friedmann, Griscom, and Moore (1957:92) of E. d. salvini and E. d. immemoratus are south of twenty-three degrees north latitude whereas the range of E. d. occidentalis includes parts of Nuevo Leon north of twenty-three degrees north latitude (occidentalis intergrades with hellmayri at Cerro Potosi, Nuevo Leon, [Miller, Friedmann, Griscom, and Moore, loc. cit.]). Thus, the specimen from Diamante Pass probably is either E. d. hellmayri or E. d. occidentalis.

**Empidonax fulvifrons pygmaeus Coues.—Miller, Friedmann, Griscom, and Moore (1957:95) listed this subspecies of the Buff-breasted Flycatcher from the Sierra Guadalupe on April 21. This record represents the eastern limit of the range of E. f. pygmaeus in northeastern Mexico.

**Contopus pertinax pertinax Cabanis and Heine.—Burleigh and Lowery (1942:194) obtained one female Coues' Flycatcher "in a small gully just below the summit of Diamante Pass."

Contopus virens (Linnaeus).—I judge from the paucity of records in the literature that the Eastern Wood Pewee is uncommon in Coahuila. Burleigh and Lowery (1942:194) obtained two males at the Chorro del Agua, and remarked also that "it is possible that as far west as Saltillo, this species is a rather uncommon transient." Ridgway (1907:519) listed Contopus virens from Sabinas.

*Contopus sordidulus veliei Coues.—Specimens examined: total 2: [Male] 31467 from Sierra del Pino (=5 mi. S, 3 mi. W Acebuches), May 14, 1954; and [Male] 31653 from the north foot of Sierra Guadalupe (=10 mi. S, 5 mi. W General Cepeda), 6400 ft., April 19, 1953.

Specimen No. 31467 of the Western Wood Pewee was obtained in pine and oak vegetation by Dickerman. Ridgway (1907:523) reported Contopus sordidulus veliei, under the name Myiochanes richardsonii richardsonii, from Sierra Encarnacion. Amadon and Phillips (1947:578) obtained a specimen of C. sordidulus from Las Delicias. Miller, Friedmann, Griscom, and Moore (1957:83) remarked that the Western Wood Pewee breeds in the State.

Nuttallornis borealis (Swainson).—Several records of the Olive-sided Flycatcher from Coahuila are present in the literature. Miller (1955a:167) reported it as a migrant in the desert at the base of the Sierra del Carmen on April 24. Miller, Friedmann, Griscom, and Moore (1957:82) reported this species from Ocampo on June 16. Amadon and Phillips (1947:578) obtained one at Las Delicias on August 16. Burleigh and Lowery (1942:194) collected two males "near the summit of Diamante Pass" on April 14.

*Pyrocephalus rubinus mexicanus Sclater.—Specimens examined: total 3: [Male] 32060 and [Female] 32061 from 12 mi. N, 12 mi. W Jimenez, 850 ft., June 19, 1952; and sex ? 32062 from 2 mi. W Jimenez, 850 ft., June 20, 1952.

The Vermilion Flycatcher is common in Coahuila. Except in the northwestern part of the State, the subspecies mexicanus is present throughout Coahuila. The size of No. 32060 (wing, 80 mm.; tail, 62 mm.) suggests that the specimen is an intergrade between P. r. flammeus and mexicanus. P. r. flammeus and mexicanus seem to intergrade in northern Coahuila.

Burleigh and Lowery (1942:195) found mexicanus to be "quite plentiful on the plains surrounding Saltillo." Sutton and Burleigh (1939a:33) noted the Vermilion Flycatcher "near San Pedro." Cory and Hellmayr (1927:92) listed P. r. mexicanus from Sabinas. The size of the testes (6x4 mm. long) of No. 32060 and the dates (June 19 and 20) on which our specimens were collected indicate breeding.

Pyrocephalus rubinus flammeus van Rossem.—This subspecies of Vermilion Flycatcher occupies the northwestern section of Coahuila. Marsh and Stevenson (1938:287) took a specimen of P. r. flammeus "near Santo Domingo, east of the Del Carmens...." Miller (1955a:167) re-examined this specimen and stated that "its affinity with the northwest race of the species seems correct in terms of the characters outlined by van Rossem (1934:353)."

Eremophila alpestris enthymia (Oberholser).—Miller, Friedmann, Griscom, and Moore (1957:105) recorded this subspecies of Horned Lark wintering 4 mi. S Hipolito (November 2 to February 24). They reported also that E. a. enthymia breeds in Coahuila (4 mi. S Hipolito ?).

*Eremophila alpestris diaphora (Oberholser).—Specimens examined: total 9: [Male] [Male] 32073-32078 and [Female] 32079 from 7 mi. S, 4 mi. E Bella Union, 7200 ft., June 25, 1952; and [Male] [Male] 31605-31606 from 14 mi. W San Antonio de las Alazanas, 6500 ft., January 9, 1954.

Burleigh and Lowery (1942:195) wrote that this subspecies of Horned Lark was uncommon "about Saltillo," but "fairly common" in Diamante Valley, at about 7000 feet. Oberholser (1902:863) recorded the subspecies aphrasta from La Ventura. Ridgway (1907:326) listed Otocoris alpestris aphrasta Oberholser from Saltillo and La Ventura. However, Miller, Friedmann, Griscom, and Moore (1957:105) indicated that E. a. diaphora rather than aphrasta was recorded from Saltillo and La Ventura. Sutton and Burleigh (1939a:35) remarked that "specimens collected near Ramos Arizpe [in southeastern Coahuila]" proved to be E. a. aphrasta. However, this record might be questioned, as Miller, Friedmann, Griscom, and Moore (op. cit.) indicated, because diaphora, rather than aphrasta, seems to occupy the southeastern sector of Coahuila. Possibly typical representatives of aphrasta and/or intergrades between aphrasta and diaphora are present in western Coahuila; however, no records of E. a. aphrasta exist from western Coahuila.

The sizes of Nos. 32073-32077 and 31605-31606 (wing, 98.0-101.5 mm., averaging 99.7 mm.), the bright yellow throat, and the vinaceous color of the hindneck characterize clearly the subspecies diaphora. The sizes of the testes (9x6 mm.; 8x5 mm.; 10x6 mm.; 8x4 mm.; 11x6 mm.) of Nos. 32073-32077, the size of the largest ovum (6.5 mm.) of No. 32079, and the juvenile (32078) are evidence of breeding of E. a. diaphora in Coahuila.

*Tachycineta thalassina thalassina (Swainson).—Specimens examined: total 3: [Male] 31471, [Male] 31473, and [Female] 31472 from Sierra del Pino (=5 mi. S, 3 mi. W Acebuches), May 15, 1954, measurements: wings, 125, 118, 108 mm.; tails, 56, 54, 46 mm.

The two subspecies of the Violet-green Swallow, thalassina and lepida, intergrade in Coahuila. Specimens from different localities in the State represent various stages of intergradation between the two subspecies; generally those from northern Coahuila seem to be closer to T. t. lepida, and those from southern Coahuila are closer to T. t. thalassina. Nos. 31471-31473 are intergrades between T. t. thalassina and T. t. lepida; in size the three resemble T. t. thalassina, but in green, rather than purple, backs and scapulars resemble T. t. lepida. The rumps of Nos. 31471-31473 show some purple with the green, but are nearer thalassina in this character.

Gonadal sizes (testes 10x7, 10x8 mm., one ovum 6 mm.) indicate that the Violet-green Swallow breeds in the Sierra del Pino.

*Tachycineta thalassina lepida Mearns.—Miller (1955a:167) reported that Violet-green Swallows taken in Boquillas Canyon of the Sierra del Carmen are intermediate between T. t. lepida and thalassina; however, he referred his sample to lepida on the basis of short wing.

Iridoprocne bicolor (Vieillot).—Miller, Friedmann, Griscom, and Moore (1957:114) reported the Tree Swallow from Hipolito on February 22.

Stelgidopteryx ruficollis psammochrous Griscom.—Miller, Friedmann, Griscom, and Moore (1957:111) reported this subspecies of the Rough-winged Swallow from Saltillo.

*Hirundo rustica erythrogaster Boddaert.—Burleigh and Lowery (1942:195) stated that the Barn Swallow was the most abundant swallow "about Saltillo." Because these swallows occupied houses about Saltillo and neighboring villages, Burleigh and Lowery (loc. cit.) concluded that the species nests commonly in the Saltillo area. Findley saw Barn Swallows 2 mi. S and 11 mi. E Nava, 810 feet, on June 15, 1952. Dickerman observed them at San Marcos (=20 mi. S Cuatro Cienegas) on May 4, 1954.

*Petrochelidon pyrrhonota minima van Rossem and Hachisuka.—Specimens examined: total 2: [Male] [Male] 31585-31586 from 14 mi. W San Antonio de las Alazanas, April 9, 1954.

Burleigh and Lowery (1942:196) noted the Cliff Swallow "in small numbers about Saltillo and the nearby villages" where the species "showed evidence of beginning to nest in many of the houses...." They (loc. cit.) found Cliff Swallows also at the Chorro del Agua and Diamante Valley. According to Dickerman, Nos. 31585-31586 were from a colony, members of which were collecting mud at a stock tank.

*Petrochelidon fulva pallida Nelson.—The Cave Swallow seems to be uncommon in eastern Coahuila. Selander and Baker (1957:345) list Saltillo, Sabinas, and Monclova as the three known localities for this swallow in the State.

*Progne subis subis (Linnaeus).—Miller, Friedmann, Griscom, and Moore (1957:107) reported, presumably on the basis of a published record not found by me, that the Purple Martin breeds in Coahuila.

**Progne chalybea chalybea (Gmelin).—The only record of the Gray-breasted Martin in Coahuila was given by Ridgway (1904:42) when he listed P. c. chalybea from Sabinas.

**Cyanocitta stelleri macrolopha Baird.—Specimens examined: total 2: [Male] 32788 and [Female] 32787 from 13 mi. E San Antonio de las Alazanas, 9950 ft., July 6, 1955.

From the paucity of records in the literature, I judge that Steller's Jay is uncommon in Coahuila. Nos. 32787-32788 seemingly represent the first records of this species in the State, and are referred to the subspecies macrolopha on the basis of relatively long (150, 151 mm.) wing, near the maximum for stelleri from Mexico. The date (July 6) of collection suggests that these birds were resident in southeastern Coahuila.

**Aphelocoma coerulescens cyanotis Ridgway.—The Scrub Jay is common in southeastern Coahuila. Burleigh and Lowery (1942:196) noted this species in small numbers at the summit of Diamante Pass, daily on the lower slopes of the mountains, and a few birds "on the outskirts of Saltillo, where they were probably nesting...." Sutton and Burleigh (1939a:35) also noted several flocks at Diamante Pass. Miller, Friedmann, Griscom, and Moore (1957:123) reported A. c. cyanotis from El Diamante. Ridgway (1904:335) listed this subspecies of the Scrub Jay (then called Aphelocoma cyanotis) from Carneros, Sierra Encarnacion, and Sierra Guadalupe.

*Aphelocoma ultramarina couchii (Baird).—Specimens examined: total 14: [Female] 31051 from Sierra de la Encantada (=38 mi. S, 23 mi. E Boquillas), 4400 ft., March 15, 1952; [Male] [Male] 29425-29426 and [Female] [Female] 29427-29428 from Club Sierra del Carmen (=2 mi. N, 6 mi. W Piedra Blanca), 4950 ft., April 8, 1950; sex ? 31052 (skeleton only) from 4 mi. W Hacienda La Mariposa, 2300 ft., March 25, 1952; [Female] [Female] 31635-31636 from Canyon de Parazos in the Sierra de la Parazos Azula (=9 mi. E Hermanas), 2100 ft., December 7, 1953; [Female] 32082 from 4 mi. N, 21 mi. W Cuatro Cienegas, 6200 ft., July 3, 1952; [Female] 31053 (skeleton only) from 26 mi. W Santa Teresa, 7050 ft., April 5, 1952; [Male] 32081 from 7 mi. S, 4 mi. E Bella Union, 7200 ft., June 25, 1952; [Female] 33173 (skeleton only) from 13 mi. E San Antonio de las Alazanas, 9950 ft., July 6, 1955; [Male] 31607 from 13 mi. E, 3 mi. S San Antonio de las Alazanas, 8900 ft., January 11, 1954; and [Male] 31654 from Sierra Guadalupe (=10 mi. S, 5 mi. W General Cepeda), 7000 ft., April 13, 1953.

The Mexican Jay is common in Coahuila. This species occupies various habitats in the State and has been collected at stations ranging from 2100 to 9950 feet.

Miller (1955a:167) stated that the Mexican Jay was the most abundant species of bird in the Sierra del Carmen. Burleigh and Lowery (1942:196) remarked that specimens of A. u. couchii were obtained "in the area surrounding the summit of Diamante Pass." At no time did Burleigh and Lowery (loc. cit.) see this species below 6500 feet. The Mexican Jay is restricted to the higher altitudes in southern Coahuila but is more widespread in northern Coahuila. Dickerman saw Mexican Jays in the Sierra del Pino on May 12, 1954; 16 mi. E and 18 mi. N Ocampo on May 7, 1954; in the Sierra de la Madera on December 13, 1953; and 20 mi. S Ocampo on April 4, 1954.

Ridgway (1904:340) remarked that Aphelocoma sieberii potosina Nelson [=A. u. couchii (Baird)] has been recorded in southern Coahuila, at Carneros. Miller, Friedmann, Griscom, and Moore (1957:124) recorded A. u. couchii from Carneros, Nuevo Leon. I suspect (Ridgway, 1904:340 and Goldman, 1951: map opposite p. 34) that the locality given by Miller, Friedmann, Griscom, and Moore (op. cit.) should be Carneros, Coahuila, rather than Carneros, Nuevo Leon.

Specimens (31051, 29425-29428, 31635-31636, 32081-32082, 31607, and 31654) of the Mexican Jay increase in size from northern Coahuila to southern Coahuila. The average length of the wings of Nos. 29425-29426 from Club Sierra del Carmen is 152 mm. whereas the average length of the wings of No. 32081 from 7 mi. S and 4 mi. E Bella Union, of No. 31607 from 13 mi. E and 3 mi. S San Antonio de las Alazanas, and of No. 31654 from Sierra Guadalupe is 164 mm.

Miller (1955a:169) indicated that the Mexican Jay breeds in the Sierra del Carmen. Burleigh and Lowery (1942:196) remarked that the species breeds at Diamante Pass. The sizes of the testes (12, 11 mm.) of Nos. 29425-29426, the size of the ovum (8 mm.) of No. 29428, and the short tail (126 mm.) of the immature female from 4 mi. N and 21 mi. W Cuatro Cienegas are also evidence of breeding by this species in the State.

*Corvus corax sinuatus Wagler.—The Common Raven seems to occur in low density in Coahuila. Miller (1955a:168) saw ravens in the pine-oak and cliff areas of the Sierra del Carmen, and took a breeding female at the head of Corte Madera Canyon, 7500 feet. Burleigh and Lowery (1942:196) found this species to be a bird of the higher slopes of the mountains although not uncommon in the broad open valley south of Diamante Pass. Sutton and Burleigh (1939a:35) took a male at Santa Rosa.

*Corvus cryptoleucus Couch.—Specimens examined: total 4: [Male] 32080 from 2 mi. W Jimenez, 850 ft., June 20, 1952; [Female] 35404 (skeleton only) from 4 mi. N San Isidro (=16 mi. N Ocampo), May 10, 1954; and [Male] [Male] 31474-31475 from R. de Almendarez (=53 mi. NW Ocampo), May 11, 1954.

The White-necked Raven occurs throughout Coahuila. Sutton and Burleigh (1939a:36) observed this species "in the vicinity of Saltillo," but not farther west. Burleigh and Lowery (1942:197) noted C. cryptoleucus frequently "on the arid plateau around Saltillo" and obtained a specimen "in the high fertile valley south of Diamante Pass." Burleigh and Lowery (loc. cit.) remarked that the White-necked Raven avoids the mountain slopes; 7000 feet was the uppermost limit of occurrence. The sizes of the testes (32080, 20 mm.; 31474: left, 12x20 mm., right, 10x16 mm.; and 31475: left, 10x16 mm., right, 10x14 mm.) of the specimens that I have examined and the dates (May 11, June 20) on which they were collected indicate breeding by the White-necked Raven in Coahuila.

*Parus sclateri eidos (Peters).—Specimens examined: total 4: [Female] 32083 from 7 mi. S, 4 mi. E Bella Union, 7200 ft., June 25, 1952; [Male] 31609 from 2 mi. E Mesa de Tablas, 9000 ft., January 15, 1954; [Male] 31656 and [Female] 31655 from the north slope of Sierra Guadalupe (=11 mi. S, 7 mi. W General Cepeda), 7800 ft., April 20, 1953.

The Mexican Chickadee is common in southeastern Coahuila. Miller, Friedmann, Griscom, and Moore (1957:133) stated that P. s. eidos and P. s. sclateri intergrade in southern Coahuila. The specimens that I have examined also show signs of intergradation, but are closer to P. s. eidos.

Sutton and Burleigh (1939a:36) reported taking specimens of P. s. eidos at Diamante Pass where they saw several individuals. Burleigh and Lowery (1942:197) also observed these chickadees "in the pine woods about the summit of Diamante Pass...." The size of the testes (6x5 mm.) of No. 31656 and the fact that No. 31655 was incubating eggs at the time it was obtained are evidence of breeding by this chickadee in the State.

**Parus sclateri sclateri Kleinschmidt.—Miller, Friedmann, Griscom, and Moore (1957:133) stated that a specimen (or specimens?) of P. s. sclateri which showed evidence of intergradation with P. s. eidos was obtained at El Diamante.

**Parus atricristatus dysleptus Van Tyne.—Specimen examined: one, [Male] 31054 from 37 mi. S, 21 mi. E Boquillas, 4100 ft., March 13, 1952.

Two subspecies of the Black-crested Titmouse are present in Coahuila. P. a. dysleptus occurs in northwestern Coahuila. Miller (1955a:168) stated that the Black-crested Titmouse, identified as dysleptus, was the only representative of the genus Parus in the Sierra del Carmen. The weak extension of black onto the nape in No. 31054 suggests intergradation between P. a. dysleptus and P. a. atricristatus; the latter lacks the black nape of dysleptus.

*Parus atricristatus atricristatus Cassin.—Specimens examined: total 4: [Female] 32084 from 12 mi. N, 12 mi. W Jimenez, 850 ft., June 19, 1952; sex ? 32085 from 2 mi. W Jimenez, 850 ft., June 20, 1952; [Female] 31055 (skeleton only) from Fortin (=33 mi. N, 1 mi. E San Geronimo), 3300 ft., on March 29, 1952; and [Female] 35399 (skeleton only) from 3.5 mi. W, 22 mi. S Ocampo, December 15, 1953, weight, 16 gms.

Typical P. a. atricristatus occurs in Coahuila in the southeastern sector (Dixon, 1955:184). Black-crested Titmice intermediate between atricristatus and dysleptus were listed from Cuidad Muzquiz and Sabinas by Dixon (loc. cit.:189), as dysleptus but were shown on his map (loc. cit.:184) as atricristatus. Our Nos. 32084 and 32085 (wing, 71, 71, tail, 63, 64 mm.) are small and fall in the upper range of size for atricristatus to which the specimens are here referred.

*Auriparus flaviceps ornatus (Lawrence).—Specimen examined: one, [Male] 31056, from Sierra de la Encantada (=38 mi. S, 23 mi. E Boquillas), 4400 ft., March 15, 1952.

The Verdin occurs up to about 5000 feet in Coahuila. Miller (1955a:168) reported that "this desert species followed the catclaw scrub up the washes to about 4800 feet, the limit of such habitat" in the Sierra del Carmen and also gave evidence of breeding by the Verdin in Coahuila. Amadon and Phillips (1947:578) reported a nest of Auriparus flaviceps at Las Delicias. Burleigh and Lowery (1942:197) obtained a single specimen "in an arroyo a few miles east of Saltillo" and a single specimen "about twenty miles west" of Saltillo. Ridgway (1904:421) reported A. f. ornatus [he referred to it as A. f. flaviceps] at Monclova. Hellmayr (1934:88) listed A. f. ornatus from Jaral. Findley saw a Verdin 2 mi. S and 3 mi. E San Juan de Sabinas on June 22, 1952.

The size (wing, 50 mm.; tail, 43 mm.) of No. 31056 is small for typical representatives of A. f. ornatus. The yellow of the head of No. 31056 is darker than that of the other subspecies of the Verdin, and I have accordingly allocated the specimen to A. f. ornatus.

*Psaltriparus melanotis lloydi Sennett.—Specimens examined: total 5: [Male] 31058 and [Female] 31057 from 37 mi. S, 21 mi. E Boquillas, 4100 ft., March 13, 1952; [Male] 31060 and [Female] 31059 from Sierra de la Encantada (=38 mi. S, 23 mi. E Boquillas), 4400 ft., March 15, 1952; and [Male] 35407 (skeleton only) from Sierra del Pino (=5 mi. W, 3 mi. S Acebuches), 6200 ft., May 14, 1954.

The Black-eared Bushtit is common in Coahuila. Typical representatives of P. m. lloydi in the northern part of the State range from 4100 feet to 8000 feet. Miller (1955a:168-169) reported P. m. lloydi breeding in the Sierra del Carmen. Marsh and Stevenson (1938:287) obtained a male in the Sierra del Carmen at El Jardin. The size of the testes (3.5 mm.) of No. 31058 suggests breeding by the Black-eared Bushtit 37 mi. S and 21 mi. E Boquillas.

**Psaltriparus melanotis iulus Jouy.—Specimens examined: total 2: [Male] 31659 from the north slope of Sierra Guadalupe (=10 mi. S, 7 mi. W General Cepeda), 7000 ft., April 20, 1953; and [Female] 31658 from the north slope of Sierra Guadalupe (=10 mi. S, 5 mi. W General Cepeda), 6700 ft., April 15, 1953.

Typical representatives of this Black-eared Bushtit are present in the southeastern sector of Coahuila. The backs of Nos. 31658-31659 differ slightly in color from the backs of typical representatives of lloydi. I suspect that the specimens from the Sierra Guadalupe are intergrades between lloydi and iulus.

Burleigh and Lowery (1942:197) took two males and two females of Psaltriparus melanotis iulus (they called their specimens Psaltriparus minimus iulus) at Saltillo and stated that their specimens tended to approach lloydi rather than being typical iulus. Sutton and Burleigh (1939a:36) recorded P. m. iulus only at Diamante Pass where they took two specimens.

*Sitta carolinensis nelsoni Mearns.—Miller (1955a:169) reported that this subspecies of the White-breasted Nuthatch breeds and was common in the oaks and open conifers from 6500 to 8000 feet in the Sierra del Carmen and stated also that the populations of the White-breasted Nuthatch in "the Chisos Mountains [of Texas] and the Sierra del Carmen seem best regarded as a stage in the cline of which nelsoni and mexicana are end points, although falling closer to nelsoni."

*Sitta carolinensis mexicana Nelson and Palmer.—Specimens examined: total 2: [Male] 31669 and [Female] 31670 from the Canyon d. Meco, Sierra Guadalupe (=10 mi. S General Cepeda), 6500 ft., April 23, 1953, weights, 17, 18 gms.

Typical populations of this White-breasted Nuthatch occur in southern Coahuila. Ridgway (1904:449) listed S. c. mexicana from Sierra Guadalupe in southern Coahuila. The underparts of our specimens are darker than in nelsoni, and their bills (culmen, 15, 13 mm.) are shorter than the average ([Male], 19.8 mm.; [Female], 18.6 mm. [Ridgway, 1904:447]) in nelsoni. The large size of the testes (5x3 mm.) of No. 31669 suggests breeding by S. c. mexicana in Sierra Guadalupe.

*Sitta pygmaea melanotis van Rossem.—In Coahuila the Pigmy Nuthatch seems to be locally common. Miller (1955a:169) reported it so between 7500 and 8000 feet in pine-oak on the mesa tops and in the heads of canyons of the Sierra del Carmen and noted that it breeds there. Hardy saw the Pigmy Nuthatch 13 mi. E San Antonio de las Alazanas on July 6, 1955.

Certhia familiaris americana Bonaparte.—Specimens examined: total 2: [Female] 31612 from the base of Don Martin Dam, November 27, 1953, skull partially unossified; and [Female] 31587 from 20 mi. S Ocampo, 6500 ft., April 5, 1954, weight, 7 gms.

This subspecies of the Brown Creeper can be considered a sparse winter visitant to Coahuila. Van Hoose (1955:302) reported that Nos. 31612 and 31587 constitute the southernmost records of C. f. americana and represent the first records of occurrence of americana in Mexico.

Certhia familiaris montana Ridgway.—Miller (1955a:169) reported this subspecies of the Brown Creeper, which he assumed to be a winter visitant or a migrant, in the Sierra del Carmen. He (loc. cit.) remarked also that the higher conifers would seem to constitute favorable habitat for nesting by the Brown Creeper, but did not find any evidence of a breeding population of creepers in the Sierra del Carmen. Miller, Friedmann, Griscom, and Moore (1957:143) reported C. f. montana from San Lazaro Mountain on November 9.

**Certhia familiaris albescens Berlepsch.—Specimens examined: total 3: sex ? 32805 from 13 mi. E San Antonio de las Alazanas, July 7, 1955; [Male] [Male] 31610-31611 from 3 mi. S, 13 mi. E San Antonio de las Alazanas, 8900 ft., January 12, 1954.

Miller, Friedmann, Griscom, and Moore (1957:143) reported C. f. albescens from "southern Coahuila." Nos. 31610-31611 and 32805 represent the only other records of this subspecies from the State. The date (July 7) on which No. 32805 was obtained suggests that this bird was a resident 13 mi. E San Antonio de las Alazanas.

Troglodytes aedon parkmanii Audubon.—Specimen examined: one, sex ? 29556, from 1.5 mi. N Parras, 5500 ft., November 10, 1949, weight, 9.8 gms.

Burleigh and Lowery (1942:197) recorded the House Wren "in small numbers about Saltillo where occasional birds, presumably migrants, were noted in thickets or stretches of underbrush fringing cultivated fields." They obtained a single male "on the outskirts of Saltillo." Hellmayr (1934:218) listed T. a. parkmanii from Sabinas.

*Troglodytes brunneicollis cahooni Brewster.—Typical representatives of this subspecies of the Brown-throated Wren occur in northern Coahuila. In the Sierra del Carmen, Miller (1955a:170) found T. b. cahooni that in no way suggested compositus of the Sierra Madre Oriental. Burleigh and Lowery (1942:198) recorded a cahooni-like specimen from Diamante Pass in southern Coahuila.

**Troglodytes brunneicollis compositus Griscom.—Specimen examined: one, [Male] 32819, from 13 mi. E San Antonio de las Alazanas, July 6, 1955.

The subspecies cahooni and compositus of the Brown-throated Wren seem to intergrade in the southern part of the State. Although No. 32819 represents the subspecies compositus, the somewhat whitish abdomen and the fairly large spots of the lesser wing coverts suggest some relationship with cahooni. In addition to the present record, Miller, Friedmann, Griscom, and Moore (1957:163) recorded T. b. compositus from southern Coahuila at Sierra Guadalupe. The record of T. b. cahooni from Sierra Guadalupe (Ridgway, 1904:588) I suspect probably represents T. b. compositus or an intergrade between compositus and cahooni. The date (July 6) on which No. 32819 was obtained 13 mi. E San Antonio de las Alazanas suggests that this bird was resident there.

*Thryomanes bewickii eremophilus Oberholser.—Specimens examined: total 3: [Male] 32088 from 2 mi. W Jimenez, 850 ft., June 20, 1952; [Female] 31061 from 4 mi. W Hacienda La Mariposa, 2300 ft., March 24, 1952, weight, 10.8 gms.; and [Male] 31660 from the north foot of Sierra Guadalupe (=10 mi. S, 5 mi. W General Cepeda), 6500 ft., April 21, 1953, weight, 13 gms.

Bewick's Wren occurs commonly in Coahuila. Miller, Friedmann, Griscom, and Moore (1957:160) reported that, in Coahuila, T. b. eremophilus "intergrades in the eastern and southern sections with T. b. cryptus and T. b. murinus, respectively." The slightly darker coloration of No. 31660, suggesting a resemblance to T. b. murinus, is the only evidence of intergradation of T. b. murinus and eremophilus that I have found.

Miller (1955a:170) stated that T. b. eremophilus was "common in the piedmont area on yucca-dotted slopes and along the lower canyon walls in growth of pinon, yucca, and cactus" in the Sierra del Carmen, and reported breeding there. Burleigh and Lowery (1942:198) remarked that T. b. eremophilus "proved without question to be the most widely distributed and abundant wren" in the Saltillo region. The series that Burleigh and Lowery (loc. cit.) assembled "proved to be uniform and clearly referable to" T. b. eremophilus. Sutton and Burleigh (1939a:36) noted Thryomanes bewickii at San Pedro on January 29 and 30. Hardy saw a male T. b. eremophilus at Parras on July 4, 1955. Ridgway (1904:557) listed T. b. eremophilus from Saltillo in April and as breeding at Sabinas.

The sizes of the testes (8 mm.; 6x4 mm.) of Nos. 32088 and 31660, respectively, suggest breeding 2 mi. W Jimenez and Sierra Guadalupe.

**Thryomanes bewickii cryptus Oberholser.—Miller, Friedmann, Griscom, and Moore (1957:161) recorded T. b. cryptus from Saltillo.

*Thryothorus ludovicianus berlandieri Baird.—Specimens examined: total 3: [Male] 32086 from 12 mi. N, 12 mi. W Jimenez, 850 ft., June 19, 1952; sex ? 32087 from 2 mi. W Jimenez, June 20, 1952; and [Female] 31063 from 8 mi. N, 4 mi. W Muzquiz, 1800 ft., April 1, 1952, weight, 18.3 gms.

One subspecies of the Carolina Wren, berlandieri, occurs in Coahuila in the northeastern section of the State. Ridgway (1904:547) recorded T. l. berlandieri from Sabinas. The fact that No. 32086 was a juvenile suggests that the Carolina Wren breeds 12 mi. N and 12 mi. W Jimenez.

*Campylorhynchus brunneicapillum couesi Sharpe.—Specimens examined: total 6: [Male] 29429 from Canyon del Cochino (16 mi. N, 21 mi. E Piedra Blanca), 3200 ft., April 6, 1950; [Male] 31064 from 7 mi. S, 2 mi. E Boquillas, 800 ft., February 29, 1952, weight, 38.1 gms.; [Female] 31066 (skeleton only) from 10 mi. S, 5 mi. E Boquillas, 1500 ft., March 5, 1952; [Male] 31637 from La Gacha (La Concha), December 1, 1953, weight, 40 gms.; [Male] 31638 from 18 mi. S Ocampo, December 16, 1953; and sex ? 29557 from 7 mi. S, 1 mi. E Gomez Farias, 6500 ft., November 18, 1949, weight, 41 gms.

This subspecies of the Cactus Wren occurs throughout Coahuila except in the extreme southeastern section of the State, where the subspecies C. b. guttatus occurs. Miller (1955a:169) found C. b. couesi breeding and occupying the open swales and mesas at the base of the mountains of the Sierra del Carmen. Burleigh and Lowery (1942:198) found C. brunneicapillum "to be rather scarce and decidedly local in its distribution" and observed an occasional bird "in the open desert country west of Saltillo." Miller, Friedmann, Griscom, and Moore (1957:151) recorded C. b. couesi "south to [the] vicinity of Monclova."

No. 29557 does not have any characters of C. b. guttatus; its under tail coverts and flanks have roundish black spots, rather than black bars as in C. b. guttatus.

**Campylorhynchus brunneicapillum guttatus (Gould).—This subspecies of Cactus Wren seems to occupy the extreme southeastern section of Coahuila. Miller, Friedmann, Griscom, and Moore (1957:152) recorded C. b. guttatus from Hipolito.

Telmatodytes palustris plesius (Oberholser).—Miller, Friedmann, Griscom, and Moore (1957:148) reported this subspecies of the Long-billed Marsh Wren from 8 mi. S Cuatro Cienegas.

*Catherpes mexicanus albifrons (Giraud).—Miller (1955a:170) found this subspecies of Canyon Wren "in shaded rocky canyons and on larger cliff slopes at the base of the mountains from 4700 to 5300 feet" in the Sierra del Carmen where it nested. Burleigh and Lowery (1942:198) noted that the Canyon Wren was "decidedly uncommon" at Saltillo and obtained a male at the Chorro de Agua on April 19. Ridgway (1904:657) listed C. m. albifrons from Patos.

*Salpinctes obsoletus obsoletus (Say).—Specimens examined: total 4: [Female] 31067 from 1 mi. N Boquillas, 700 ft., March 6, 1952, weight, 16.1 gms.; [Female] 31068 from 7 mi. S, 2 mi. E Boquillas, 800 ft., March 1, 1952, weight, 18.2 gms.; sex ? 29558 from 12 mi. N, 10 mi. E Parras, 5000 ft., November 11, 1949, weight, 16.9 gms.; and [Male] 32089 from 7 mi. S, 4 mi. E Bella Union 7200 ft., June 24, 1952.

The Rock Wren is common in Coahuila. Miller (1955a:170) found S. o. obsoletus "only in the rocky piedmont and on lower bare canyon faces" and stated that Marsh took a bird in fresh fall plumage on September 6 at El Jardin. Sutton and Burleigh (1939a:37) found the Rock Wren "near San Pedro." Burleigh and Lowery (1942:198) wrote that the subspecies obsoletus was "characteristically a bird of the arroyos of the arid plateau about Saltillo, where it was fairly common...." The large size of the testes (5x3 mm.) of No. 32089 and the date (June 24) on which it was obtained suggest breeding by the Rock Wren 7 mi. S and 4 mi. E Bella Union.

*Mimus polyglottos leucopterus (Vigors).—Specimens examined: total 5: [Female] 31070 from 10 mi. S, 5 mi. E Boquillas, 1500 ft., March 5, 1952, weight, 55.1 gms.; [Male] [Male] 32094-32095 from 2 mi. W Jimenez, 850 ft., June 20, 1952; [Male] 32096 from 5 mi. N, 19 mi. W Cuatro Cienegas, 3250 ft., July 5, 1952; and [Male] 33186 (skeleton only) from Parras, July 5, 1955, testes, 6x3 mm.

The Mockingbird is sparsely distributed throughout Coahuila. Miller (1955a:170) found M. p. leucopterus in the mesquite and catclaw at the base of the mountains in the Sierra del Carmen. Sutton and Burleigh (1939a:37) reported M. p. leucopterus from Diamante Pass. Amadon and Phillips (1947:578) found a young Mockingbird out of the nest begging for food from an adult on August 18 at Las Delicias. Burleigh and Lowery (1942:199) found the Mockingbird on the arid plateau "about Saltillo." Hellmayr (1934:308) listed M. p. leucopterus from Jaral. Findley saw Mockingbirds 2 mi. S and 3 mi. E San Juan de Sabinas on June 22, 1952. Dickerman saw Mockingbirds in the Sierra del Pino on May 12, 1954, and 8 mi. E and 2 mi. S Americanos on May 18, 1954. The sizes of the testes (8, 7 mm.) of Nos. 32094 and 32096, respectively, suggest breeding 2 mi. W Jimenez and 5 mi. N and 19 mi. W Cuatro Cienegas, as does No. 32095, a juvenile.

*Toxostoma longirostre sennetti (Ridgway).—Specimen examined: one, [Male] 32090, from 2 mi. S, 3 mi. E San Juan de Sabinas, June 22, 1952.

In Coahuila the Long-billed Thrasher seems to be uncommon. It has been recorded in Coahuila as far west as San Juan de Sabinas. Ridgway (1907:192) recorded T. l. sennetti from Sabinas, the only other record of the Long-billed Thrasher, to my knowledge, from the State. The large size of the testes (11x6 mm.) of No. 32090 and the date (June 22) on which it was obtained suggest that T. l. sennetti breeds 2 mi. S and 3 mi. E San Juan de Sabinas.

*Toxostoma curvirostre celsum Moore.—Specimens examined: total 2: [Female] 31071 from 7 mi. S, 2 mi. E Boquillas, March 1, 1952, wing, 111 mm., tail, 114 mm., weight, 97.2 gms.; and [Female] 31072 (skeleton only) from 10 mi. S, 5 mi. E Boquillas, 1500 ft., March 5, 1952.

This subspecies of the Curve-billed Thrasher occurs in northwestern Coahuila. Specimens of T. c. celsum and oberholseri from Coahuila are too few to show clearly the distribution and intergradation in Coahuila.

No. 31071 is referred to T. c. celsum because of large size; the spots on its upper abdomen, which are large and pronounced, suggest a relationship with T. c. oberholseri. Miller (1955a:170) remarked that T. c. celsum was a scarce resident of the desert scrub at the mouth of Boquillas Canyon of the Sierra del Carmen.

*Toxostoma curvirostre oberholseri Law.—Specimens examined: total 5: [Female] 35405 (skeleton only) from 4 mi. N San Isidro, May 11, 1954; [Female] 32091 from 5 mi. N, 19 mi. W Cuatro Cienegas, 3250 ft., July 5, 1952; [Male] 32833 from Parras, July 4, 1955, weight, 76.5 gms.; [Female] 32092 from 7 mi. S, 4 mi. E Bella Union, 7200 ft., June 25, 1952; and [Male] 31614 from 16 mi. W San Antonio de las Alazanas, 6500 ft., January 7, 1954, weight, 90 gms.

This subspecies of the Curve-billed Thrasher occurs in eastern and southern Coahuila. Amadon and Phillips (1947:578) took a Curve-billed Thrasher twenty miles west of Saltillo that had an enlarged ovary and a brood patch still somewhat evident on August 27. Burleigh and Lowery (1942:199) stated that T. c. oberholseri "was rather widely and commonly distributed, being noted from the area about the summit of Diamante Pass at 7,800 feet down to the desert country about Saltillo." Miller, Friedmann, Griscom, and Moore (1957:177) recorded T. c. oberholseri from Sabinas, from 8 mi. S Cuatro Cienegas, and from El Diamante. Hellmayr (1934:298) also recorded T. c. oberholseri from Sabinas, as did Ridgway (1907:199) under the name T. c. curvirostre before the subspecies oberholseri was named. The female from 4 mi. N San Isidro had an egg in its oviduct. The immature male (32833), the large size of ovum (8 mm.) of No. 32092, and the presence of a brood patch on No. 32091 also are evidences of breeding by the Curve-billed Thrasher in Coahuila.

*Toxostoma dorsale dorsale Henry.—The Crissal Thrasher is uncommon in Coahuila. The subspecies dorsale occurs in northern Coahuila. Miller (1955a:170-171) found the subspecies dorsale, at about 4700 feet, only in the mesquite, desert willow, and walnut scrub along the wash of Boquillas Canyon of the Sierra del Carmen and remarked also that the bird nested there.

**Toxostoma dorsale dumosum Moore.—Specimen examined: one, sex ? 29559, from 8 mi. N La Ventura, 6000 ft., November 17, 1949, weight, 57.0 gms.

The subspecies dumosum of the Crissal Thrasher in Coahuila has been reported only from the southeastern section of the State. Burleigh and Lowery (1942:199-200) found T. d. dumosum "not uncommon in the lower foot-hills outside of Saltillo as well as on the summit of Diamante Pass." The specimen of T. d. dorsale from Diamante Pass reported by Sutton and Burleigh (1939a:37) is closer, according to Burleigh and Lowery (1942:199), to T. d. dumosum. No. 29559 is darker above and below than typical specimens of T. d. dorsale and represents T. d. dumosum.

Oreoscoptes montanus (Townsend).—Specimen examined: one, sex ? 30237, from 1 mi. SW San Pedro de las Colonias, 3700 ft., February 8, 1951.

The Sage Thrasher seems to be a winter visitant to Coahuila. Miller, Friedmann, Griscom, and Moore (1957:173) recorded the species in November from 8 mi. S Cuatro Cienegas.

*Turdus migratorius propinquus Ridgway.—Specimen examined: one, [Female] 31073 (skeleton only) from 4 mi. W Hacienda La Mariposa, 2300 ft., March 24, 1952.

Burleigh and Lowery (1942:200) stated that "the Robin apparently breeds rather sparingly on the higher ridges" in southeastern Coahuila. They collected a pair "in the open pine woods just below the summit of Diamante Pass" on April 15 and noted another at the Chorro del Agua on April 19.

**Ridgwayia pinicola (Sclater).—Specimen examined: one, [Male] 31619, from 5 mi. W, 22 mi. S Ocampo, 6000 ft., December 15, 1953, weight, 88 gms.

The Aztec Thrush is rare in Coahuila. Van Hoose (1955:302) remarked that No. 31619, the skull of which was incompletely ossified, "represents the northernmost record for this species, which was previously unknown in Coahuila."

Hylocichla guttata guttata (Pallas).—Specimens examined: total 2: [Male] [Male] 31074-31075 from 4 mi. W Hacienda La Mariposa, 2300 ft., March 25 and 26, 1952, weights, 25, 21 gms.

The Hermit Thrush is a common migrant or winter visitant in Coahuila. H. g. guttata has been reported from northern Coahuila. Miller (1955a:171) observed H. g. guttata (and H. g. auduboni) in the Douglas fir and pine-oak belts and in the lower levels in the oaks at the foot of the Sierra del Carmen. Burleigh and Lowery (1942:200) noted H. g. guttata "in small numbers in the open woods surrounding the summit of Diamante Pass, and at infrequent intervals in the arroyos on the arid plateau near Saltillo."

Hylocichla guttata sequoiensis (Belding).—Ridgway (1907:45) recorded this subspecies of Hermit Thrush from Sierra Guadalupe in April. However, Miller, Friedmann, Griscom, and Moore (1957:188) suggest that the material on which this identification was based needs redetermination.

Hylocichla guttata auduboni (Baird).—Specimens examined: total 3: [Female] 31488 from Sierra del Pino (=5 mi. S, 3 mi. W Acebuches), May 12, 1954, weight, 25 gms.; [Female] 31076 (skeleton only) from Fortin (=33 mi. N, 1 mi. E San Geronimo), 3300 ft., March 28, 1952; and [Female] 31077 (skeleton only) from 26 mi. W Santa Teresa, 7050 ft., April 4, 1952.

Miller (1955a:171) found this subspecies of Hermit Thrush wintering with H. g. guttata in the Sierra del Carmen. Hellmayr (1934:456) listed H. g. auduboni from Sabinas.

**Sialia sialis fulva Brewster.—Hellmayr (1934:479) listed this subspecies of the Eastern Bluebird from Sabinas.

*Sialia mexicana mexicana Swainson.—Miller, Friedmann, Griscom, and Moore (1957:199) remarked that the subspecies mexicana of the Western Bluebird breeds in the southern mountains of Coahuila where, at El Diamante, on July 7, a specimen (or specimens ?) in breeding condition was obtained. Burleigh and Lowery (1942:200) found S. m. mexicana "well distributed in the open woods about" Diamante Pass, but at no time below an elevation of approximately 6500 feet. Sutton and Burleigh (1939a:38) also saw "several brown-backed" Western Bluebirds at Diamante Pass on March 6. Ridgway (1907:150) recorded S. m. mexicana from Saltillo, Carneros, and Sierra Guadalupe.

Sialia currucoides (Bechstein).—Specimen examined: one, [Female] 31078, from Sierra de la Encantada (=38 mi. S, 23 mi. E Boquillas), 4400 ft., March 14, 1952, weight, 23.7 gms.

The Mountain Bluebird is a winter visitant to Coahuila. Miller, Friedmann, Griscom, and Moore (1957:200) recorded Sialia currucoides from Hipolito on February 24.

**Myadestes townsendi townsendi (Audubon).—Specimen examined: one, [Female] 31079, from 26 mi. W Santa Teresa, 7050 ft., April 4, 1952.

Miller (1955a:171) detected Townsend's Solitaire in clumps of large pines in two different locations at 7000 and 7500 feet on April 4, 6, and 8 in the Sierra del Carmen. He did not find a breeding population of M. t. townsendi, but did note favorable habitat for breeding. Ridgway (1907:164) recorded M. townsendi from the Sierra Guadalupe on April 21. Dickerman saw a Townsend's Solitaire in the Sierra de la Madera on December 13, 1953.

The underparts of No. 31079 are not uniformly dark, being paler on the chin, throat, and abdomen than elsewhere as is true of typical representatives of M. t. townsendi.

**Polioptila caerulea caerulea (Linnaeus).—Specimen examined: one, [Male] 32097, from 2 mi. S, 11 mi. E Nava, June 15, 1952.

No. 32097 is the first record of occurrence of this subspecies of Blue-gray Gnatcatcher in the State. The white of the underparts of No. 32097 is less grayish than the underparts of typical representatives of P. c. amoenissima, and the black at the base of the inner webs of the outermost rectrix does not extend beyond the tip of the under tail coverts. Representatives of P. c. amoenissima have black at the base of the inner web of the outermost rectrix more extended, usually showing beyond the tip of the under tail coverts. The size of the testes (3x2 mm.) of No. 32097 does not suggest breeding, but the date (June 15) indicates that it was a resident.

*Polioptila caerulea amoenissima Grinnell.—Specimen examined: one, [Male] 31080, from 7 mi. S, 2 mi. E Boquillas, 800 ft., February 29, 1952, weight, 5.4 gms.

This subspecies of the Blue-gray Gnatcatcher breeds in Coahuila and occurs throughout all of the State except the northeastern section. Miller (1955a:171) remarked that "this gnatcatcher was apparently established on summer territories in the oaks and walnuts of the wash of Boquillas Canyon at the foot of the mountains" of the Sierra del Carmen. Burleigh and Lowery (1942:200) noted "this species only in the open woods at the summit of Diamante Pass, where, however, it was not uncommon." Miller, Friedmann, Griscom, and Moore (1957:201) recorded P. c. amoenissima breeding at El Diamante on July 8.

*Polioptila melanura melanura Lawrence.—Specimen examined: one, [Male] 31081, from 7 mi. S, 2 mi. E Boquillas, 800 ft., March 1, 1952, weight, 5.6 gms.

In Coahuila this subspecies of the Black-tailed Gnatcatcher has been recorded from several localities. Burleigh and Lowery (1942:200) found that it "was limited in its distribution to the lower altitudes and was noted only in the open desert country west of Saltillo." Sutton and Burleigh (1939a:38) noted it "several times near San Pedro" where on January 29 one female was taken. Miller, Friedmann, Griscom, and Moore (1957:205) recorded P. m. melanura at Hipolito on June 30 to July 2 in breeding condition.

Regulus satrapa satrapa Lichtenstein.—Miller (1955a:171) found a small wintering flock of Golden-crowned Kinglets in the Sierra del Carmen; this is the only record of the species in Coahuila.

Regulus calendula calendula (Linnaeus).—Specimens examined: total 5: [Female] 31085 from the Rio Grande (=17 mi. S Dryden, Terrell Co., Texas, in Coahuila), 600 ft., March 19, 1952, weight, 6.3 gms.; [Male] [Male] 31082-31083 from 1 mi. N Boquillas, 700 ft., March 8, 1952, weight, 7.2, 6.5 gms.; [Male] 31084 from Sierra de la Encantada (=38 mi. S, 23 mi. E Boquillas), 4400 ft., March 15, 1954, weight, 5.4 gms.; and [Male] 31661 from the north slope of Sierra Guadalupe (=11 mi. S, 7 mi. W General Cepeda), 7800 ft., April 20, 1953, weight, 5 gms.

In Coahuila this subspecies of the Ruby-crowned Kinglet is a common migrant. Miller (1955a:171) found it (and R. c. cineraceus) "common in the conifers and oaks of the upper levels of the mountains [Sierra del Carmen], at 6500 to 7000 feet, as winter visitants or migrants." Burleigh and Lowery (1942:201) took specimens of R. c. calendula at Diamante Pass on April 15, at the Chorro del Agua on April 19, and at 20 mi. W Saltillo on April 22. Sutton and Burleigh (1939a:38) noted the Ruby-crowned Kinglet "in the arid parts of southern Coahuila." Hellmayr (1934:513) listed R. c. calendula from Sabinas. Dickerman saw Ruby-crowned Kinglets in the Sierra de la Madera on December 13, 1953, 20 mi. S Ocampo on April 4, 1954, and 3 mi. S and 13 mi. E San Antonio de las Alazanas on January 12, 1954.

Regulus calendula cineraceus Grinnell.—Miller (1955a:171) found R. c. cineraceus common in the Sierra del Carmen; on April 3, 5, and 10 the birds were "abundant, as though a wave of migrants were passing through."

Anthus spinoletta rubescens (Tunstall).—Specimens examined: Total 3: [Male] [Male] 31086-31087 and sex ? 31088 from 1 mi. N Boquillas, 700 ft., March 6, 7, and 8, 1952, weights, 19.3, 19.9, and 16.6 gms.

This subspecies of the Water Pipit is an uncommon winter visitant or migrant in Coahuila. Burleigh and Lowery (1942:201) found "a flock of ten birds ... on the outskirts of Saltillo" on April 18. Miller, Friedmann, Griscom, and Moore (1957:210) recorded A. s. rubescens from Cuatro Cienegas in November and from Hipolito in February.

Anthus spinoletta pacificus Todd.—Miller, Friedmann, Griscom, and Moore (1957:209) recorded this Water Pipit from Cuatro Cienegas in February and from Hipolito in November.

Bombycilla cedrorum Vieillot.—The Cedar Waxwing is an uncommon winter visitant to Coahuila. Miller (1955a:171) recorded a flock in the Sierra del Carmen on April 5, and another flock on April 21. Burleigh and Lowery (1942:201) saw two small flocks on April 15 "in the open woods just below the summit of Diamante Pass."

*Phainopepla nitens nitens Swainson.—Specimen examined: one, [Male] 31674, from the west foot of Pico de Jimulco, 5000 ft., April 3, 1953, weight, 35 gms.

The Phainopepla occurs throughout most of Coahuila. Sutton and Burleigh (1939a:39) reported P. n. nitens from Diamante Pass on March 6. On April 15 and 17 Burleigh and Lowery (1942:201) saw scattered pairs of the Phainopepla "only in the open woods surrounding Diamante Pass." Miller (1955a:171) noted P. n. nitens "on April 20 and 28 in large clumps of mesquite near Piedra Blanca, at about 4500 feet, on the foothills" of the Sierra del Carmen. Dickerman saw a Phainopepla 20 mi. S Ocampo on April 4, 1954. Baird (1858:320) listed a male P. n. nitens from Coahuila, Mexico. Hellmayr (1935:107) remarked that Phainopepla nitens was listed from Coahuila by "Salvin and Godman, Biol. Centr.—Amer., Aves, 1, p. 220, 1883...." Miller, Friedmann, Griscom, and Moore (1957:213) stated that P. n. nitens breeds at El Diamante. The long wing (100 mm.) and long tail (96 mm.) of No. 31674 is typical for P. n. nitens.

Phainopepla nitens lepida Van Tyne.—Sutton and Burleigh (1939a:39) recorded P. n. lepida from Diamante Pass on March 6; Miller, Friedmann, Griscom, and Moore (1957:213) suggest that this individual was a vagrant.

Lanius ludovicianus migrans Palmer.—Burleigh and Lowery (1942:202) obtained this subspecies of Loggerhead Shrike "on the outskirts of Saltillo on April 20." The specimen shows evidence of intergradation with excubitorides.

**Lanius ludovicianus excubitorides Swainson.—Miller, Friedmann, Griscom, and Moore (1957:216) recorded L. l. excubitorides from Sabinas and from Hipolito (November 2 to February 24).

*Lanius ludovicianus mexicanas Brehm.—Specimens examined: total 4: sex ? 31089 from 7 mi. S, 2 mi. E Boquillas, 800 ft., February 29, 1952, weight, 45.1 gms.; [Female] 31090 from 36 mi. S, 15 mi. E Boquillas, 2550 ft., March 12, 1952; sex ? 30233 from 1 mi. N San Lorenzo, 4200 ft., February 5, 1951; and [Female] 32098 from 7 mi. S, 4 mi. E Bella Union, 7200 ft., June 25, 1952.

Miller (1931:66) suggested that L. l. mexicanus and L. l. excubitorides intergrade in Coahuila; all of the specimens of Loggerhead Shrike from Coahuila that I have examined are intergrades between mexicanus and excubitorides. Our four specimens have a superciliary line that is indistinct and the black mask of each extends somewhat posterior to the auricular region. The anterior part of their forehead is somewhat lighter than the remaining part of their head and back.

Miller (1955a:171) detected L. l. mexicanus only once in catclaw scrub in the lower part of Boquillas wash at about 4600 feet in the Sierra del Carmen. He (loc. cit.) remarked that his individual may best be considered an intergrade between mexicanus and excubitorides, being "somewhat closer to the former." Burleigh and Lowery (1942:201) obtained a male L. l. mexicanus "in the open valley just below the summit of Diamante Pass on April 23" that was typical of this subspecies. Burleigh and Lowery (1942:201-202) suggested that L. l. mexicanus breeds in southeastern Coahuila. Sutton and Burleigh (1939a:39) took a typical representative L. l. mexicanus at Mayran on January 30.

Lanius ludovicianus gambeli Ridgway.—Miller, Friedmann, Griscom, and Moore (1957:214) recorded this subspecies from Hipolito on November 6.

*Vireo atricapilla Woodhouse.—Specimens examined: total 4: sex ? 32099-32100 from Sierra del Pino (=6 mi. N, 6 mi. W Acebuches), 5250 ft., July 3, 1952; and [Male] [Male] 31493-31494 from 16 mi. E, 18 mi. N Ocampo, May 8 and 9, 1954, enlarged testes.

The Black-capped Vireo seems to breed as far south as central Coahuila. Miller (1955a:171-172) reported this vireo as a summer resident in "the low catclaw-dominated scrub in the lower washes of Boquillas Canyon and its side valleys, at 4600 to 4800 feet" in the Sierra del Carmen. Dickerman found the Black-capped Vireo common on the dry scrub and oak hillside habitat 16 mi. E and 18 mi. N Ocampo.

Vireo griseus noveboracensis (Gmelin).—Ridgway (1904:184) recorded this subspecies of the White-eyed Vireo "west to Sabinas." Miller, Friedmann, Griscom, and Moore (1957:220) also recorded V. g. noveboracensis from Sabinas on May 25. I suspect that the specimen of V. g. noveboracensis from Sabinas that was taken on May 25 was a vagrant. V. g. noveboracensis may occur in Coahuila as a migrant or winter visitant; however, I do not believe that representatives of noveboracensis normally are resident in Coahuila.

*Vireo griseus micrus Nelson.—Specimen examined: one, [Male] 32101, from 2 mi. W Jimenez, 850 ft., June 20, 1952, measurements: wing, 58 mm.; tail, 43.5 mm.; culmen, 10 mm.; tarsus, 19 mm.

This subspecies of the White-eyed Vireo breeds in Coahuila. Miller, Friedmann, Griscom, and Moore (1957:221) recorded V. g. micrus from Sabinas on March 9 and May 14. The enlarged testes (5x3 mm.) of No. 32101 and the date (June 20) on which it was obtained suggest breeding in Coahuila.

Vireo huttoni stephensi Brewster.—This subspecies of Hutton's Vireo occurs in southeastern Coahuila as a migrant. Sutton and Burleigh (1939a:39) found V. h. stephensi fairly common at Diamante Pass on March 6. Ridgway (1904:198) recorded V. h. stephensi from Sierra Guadalupe in April.

*Vireo huttoni carolinae Brandt.—Specimens examined: total 3: [Male] 31588 from 20 mi. S Ocampo, 6500 ft., April 5, 1954, weight, 11 gms.; [Female] 32851 from 13 mi. E San Antonio de las Alazanas, July 6, 1955, weight, 14.2 gms.; and [Female] 32102 from 7 mi. S, 4 mi. E Bella Union, 7200 ft., June 25, 1952.

To my knowledge, V. h. carolinae is the only resident subspecies of Hutton's Vireo in Coahuila. Burleigh and Lowery (1942:202) found V. h. carolinae in rather limited numbers in the woods bordering the summit of Diamante Pass. Miller (1955a:172) remarked that the subspecies carolinae was a common bird from 6500 feet to 8000 feet in the Sierra del Carmen. Miller (loc. cit.) took a female on April 12 that was nearly ready to lay and said that his specimens of carolinae from the Sierra del Carmen seem to be separate from V. h. stephensi and V. h. mexicanus. Our specimens showed no overlapping of characters with V. h. stephensi and V. h. mexicanus. The size of the largest ovum (2 mm.) of No. 32102 and the dates (June 25, and July 6) on which Nos. 32102 and 32851 were obtained suggest that V. h. carolinae is a resident in Coahuila.

*Vireo bellii medius Oberholser.—Specimen examined: one, [Male] 31495, from San Marcos, May 5, 1954, measurements: wing, 56 mm.; tail, 48 mm.; culmen, 9.5 mm.; tarsus, 18 mm.

Although Bell's Vireo seems to have been observed uncommonly in Coahuila, this species does breed in the State. Burleigh and Lowery (1942:202) obtained a single female V. b. medius on April 20 "in an arroyo east of Saltillo" and found this subspecies "not uncommon in the open desert twenty miles west of Saltillo, where three singing males were secured." Miller, Friedmann, Griscom, and Moore (1957:226) recorded V. b. medius in breeding condition at Hipolito from June 30 to July 3. Ridgway (1904:207) recorded the subspecies from Monclova. Hardy saw a Bell's Vireo at Parras on July 4, 1955. The size of No. 31495 is typical for V. b. medius.

*Vireo flavifrons Vieillot.—Specimen examined: one, [Male] 32103, from 2 mi. W Jimenez, 850 ft., June 20, 1952.

Van Hoose (1955:302-303) suggested that the occurrence of No. 32103 in Coahuila is evidence of a southward extension of the range of the Yellow-throated Vireo within the last generation. The size of the testes (5x3 mm.) of No. 32103 and the date (June 20) on which it was obtained suggest breeding by Vireo flavifrons in Coahuila.

Vireo solitarius solitarius (Wilson).—Specimen examined: one, [Female] 31640, from 9 mi. E Hermanas (=Canyon de Parajos in the Sierra de Parajos Azule), 2100 ft., December 7, 1953.

This subspecies of the Solitary Vireo is an uncommon migrant or winter visitant to Coahuila. Dickerman obtained No. 31540, whose skull was unossified and whose ovary was small, in an oak and palm habitat. The bright yellow flanks, large and yellow wing bars, and the uniform olive green back indicate that this specimen is a typical representative of V. s. solitarius. This subspecies was previously unrecorded in Coahuila.

Vireo solitarius cassinii Xantus.—Specimens examined: total 2: [Female] 35408 (skeleton only) from 5 mi. W, 3 mi. S Acebuches, 6200 ft., May 12, 1954; and [Male] 31589 from 20 mi. S Ocampo, 6200 ft., April 4, 1954, measurements: wing, 75 mm.; tail, 57 mm.; culmen, 10.5 mm.; weight, 14 gms.

This subspecies of the Solitary Vireo seems to be uncommon in Coahuila. No. 31589 provides the first record of V. s. cassinii in Coahuila. Van Hoose has (1955:303) erroneously reported that Dickerman obtained No. 31589 on July 4, 1954; the correct date is April 4, 1954.

Although the size of No. 31589 is large for V. s. cassinii, the color (sides and flanks with less yellow, more olive; narrow white wing bars) resembles that of typical representatives of cassinii. The testes of No. 31589 were not enlarged. Dickerman suggested that the female from 5 mi. W and 3 mi. S Acebuches showed some resemblance to V. s. plumbeus. This is not to be unexpected since the subspecies plumbeus has been reported from the Chisos Mountains of Texas (Van Tyne and Sutton, 1937:82) and from northern Chihuahua (Miller, Friedmann, Griscom, and Moore, 1957:227).

*Vireo olivaceus (Linnaeus).—Specimen examined: one, [Male] 32104, from 12 mi. N, 12 mi. W Jimenez, 850 ft., June 19, 1952.

The Red-eyed Vireo has been uncommonly reported from eastern Coahuila. Miller, Friedmann, Griscom, and Moore (1957:229) recorded V. olivaceus from Sabinas on May 22 and from Las Vacas Creek on June 7 as late spring migrants. Hellmayr (1935:131) listed the Red-eyed Vireo from northern Coahuila. Findley saw a Red-eyed Vireo 2 mi. W Jimenez on June 19, 1952. The size of the testes (5x3 mm.) of No. 32104 and the date (June 19) on which it was obtained indicate that the Red-eyed Vireo possibly breeds in northeastern Coahuila; if so, this is the first breeding record of the Red-eyed Vireo in Coahuila.

Vireo gilvus gilvus (Vieillot).—This subspecies of the Warbling Vireo is an uncommon migrant in Coahuila. Miller, Friedmann, Griscom, and Moore (1957:232) recorded V. g. gilvus from 12 mi. W Saltillo on September 28.

Mniotilta varia (Linnaeus).—Specimen examined: one, [Male] 31662, from the north slope of Sierra Guadalupe (=11 mi. S, 7 mi. W General Cepeda), 7800 ft., April 20, 1953, weight, 10 gms., testes not enlarged.

The Black and White Warbler is an uncommon visitant or migrant in Coahuila. Miller (1955a:172) remarked that Marsh took a fall migrant on September 1 in Chuperosa Canyon in the Sierra del Carmen. Burleigh and Lowery (1942:202) secured a female Black and White Warbler "in an orchard on the outskirts of Saltillo" on April 20 and a male "near the top of Diamante Pass on April 23."

Vermivora celata celata (Say).—Specimens examined: total 2: sex ? 31091 from the Rio Grande (=17 mi. S Dryden, Terrell Co., Texas, in Coahuila), 600 ft., March 19, 1952, measurements: wing, 57 mm.; tail, 47 mm.; weight, 7.7 gms.; and [Male] 31092 from 4 mi. W Hacienda La Mariposa, 2300 ft., March 25, 1952, measurements: wing, 62 mm.; tail, 48 mm.; weight, 9.2 gms.

This subspecies of the Orange-crowned Warbler is an uncommon migrant in Coahuila. In Brewster County, Texas, Van Tyne and Sutton (1937:83) found V. c. celata "not common as a spring transient." Miller, Friedmann, Griscom, and Moore (1957:239) recorded V. c. celata from Coahuila. The quality of the pale yellow color and the sizes of Nos. 31091-31092 suggest that they are representatives of V. c. celata.

Vermivora celata orestera Oberholser.—Burleigh and Lowery (1942:202) found V. c. orestera "only on infrequent occasions ... in the open woods surrounding the summit of Diamante Pass" where they obtained one specimen.

Vermivora virginiae (Baird).—Miller (1955a:172) took a male Virginia's Warbler in Boquillas Canyon in the Sierra del Carmen "in scattered scrubby oak growth with grass and cactus beneath." This species in the Sierra del Carmen is considered "casual" by Miller, Friedmann, Griscom, and Moore (1957:241).

**Vermivora crissalis (Salvin and Godman).—Specimen examined: one, [Male] 31590, from 20 mi. S Ocampo, 7000 ft., April 5, 1954, weight, 10 gms.

The Colima Warbler is common locally in Coahuila. Burleigh and Lowery (1942:203) found this species fairly common on the steep, rugged slopes above the summit of Diamante Pass and saw none below an elevation of approximately 7500 feet. Bangs (1925:251) stated that Nelson and Goldman secured a specimen of the Colima Warbler at Sierra Guadalupe on April 25.

*Vermivora superciliosa mexicana (Bonaparte).—Specimen examined: one, [Male] 31591, from 13 mi. E San Antonio de las Alazanas, 9350 ft., April 10, 1954.

Hartlaub's Warbler is uncommon in Coahuila and seems to occur only in the southeastern section of the State; No. 31591 is the first record of the species in Coahuila. The size of the testes (5x2 mm.) of No. 31591 and the fact that the bird was singing when first seen suggest the possibility that V. s. mexicana breeds in southeastern Coahuila. Breeding there is not unexpected because the species has been found breeding in Nuevo Leon (Miller, Friedmann, Griscom, and Moore, 1957:242).

Parula americana (Linnaeus).—Miller (1955a:172) obtained a migrant Parula Warbler in an oak grove at 7000 feet on April 16 in the Sierra del Carmen, and remarked that it was "apparently the first record of this species in Coahuila."

*Parula pitiayumi nigrilora Coues.—The AOU Check-list Committee (1957:486) recorded this subspecies of the Olive-backed Warbler as a resident at Sabinas.

*Peucedramus taeniatus arizonae Miller and Griscom.—This subspecies of the Olive Warbler is locally common in Coahuila. Miller (1955a:172) found P. t. arizonae common in the pine timber above 6800 feet in the Sierra del Carmen and suggested that this warbler breeds in these mountains. Burleigh and Lowery (1942:203) found the Olive Warbler in a thick pine wood at an elevation of 9500 to 10,000 feet and remarked that this species was "decidedly uncommon in the Diamante Pass area." They (loc. cit.) obtained a female (not identified to subspecies) on April 23 that had a "well developed brood patch and was unquestionably incubating eggs." Sutton and Burleigh (1939a:40) took a single female at Diamante Pass on March 6 which also was not identified to subspecies. Dickerman saw Olive Warblers in the Sierra de la Madera on December 13, 1953, and 13 mi. E San Antonio de las Alazanas on April 10, 1954.

Dendroica petechia morcomi Coale.—Miller, Friedmann, Griscom, and Moore (1957:246) reported this subspecies of the Yellow Warbler as having been recorded from Coahuila.

Dendroica auduboni auduboni (Townsend).—Specimens examined: total 2: [Male] 31094 (skeleton only) from Fortin (=33 mi. N, 1 mi. E San Geronimo), 3300 ft., March 29, 1952; and [Male] 31093 from 4 mi. W Hacienda La Mariposa, 2300 ft., March 25, 1952, weight, 12.3 gms.

Audubon's Warbler is a common winter visitant and migrant in Coahuila. Miller (1955a:173) recorded D. a. auduboni as a migrant from April 7 to 26 in the Sierra del Carmen; he found no suggestion of breeding by the Audubon's Warbler in the northwestern section of the State. One individual that Miller (loc. cit.) obtained was extensively black and approached the characters of the subspecies nigrifrons of Chihuahua. He (loc. cit.) suggested that the black individual was taken from "part of a cline of blackness and size in which D. a. auduboni of the northwest and D. a. nigrifrons of Mexico are extremes." Burleigh and Lowery (1942:203) remarked that Audubon's Warbler "is doubtless a common winter bird in the area around Saltillo." Two specimens obtained by Burleigh and Lowery (loc. cit.) "might be considered intermediate" between auduboni and memorabilis. Sutton and Burleigh (1939a:40) saw Audubon's Warbler "in some numbers near San Pedro ... [on] January 29 and 30." Dickerman saw Audubon's Warblers 13 mi. E San Antonio de las Alazanas on April 10, 1954. Miller (1955a:173) also obtained, in the Sierra del Carmen, a hybrid between D. coronata and D. auduboni.

Dendroica auduboni memorabilis Oberholser.—Oberholser (1921:246) recorded D. a. memorabilis from Saltillo on April 17. This subspecies seems to winter commonly in western Mexico and less commonly in the Central Plateau and Sierra Madre Oriental (Miller, Friedmann, Griscom, and Moore, 1957:249-250).

Dendroica nigrescens (Townsend).—Specimen examined: one, [Male] 31095, from Fortin (=33 mi. N, 8 mi. W San Geronimo), 3300 ft., March 28, 1952, weight, 9.3 gms.

The Black-throated Gray Warbler is an uncommon spring and possibly fall migrant in Coahuila. Miller (1955a:173) found D. nigrescens uncommon in the Sierra del Carmen. He saw and heard a spring migrant singing on April 12 at 7000 feet and obtained a male on April 16.

Dendroica townsendi (Townsend).—Townsend's Warbler is a spring and fall migrant in Coahuila. Miller (1955a:173) recorded D. townsendi on September 2 at Jardin del Sur in Chuperosa Canyon in the Sierra del Carmen. Burleigh and Lowery (1942:203) saw two individuals of Townsend's Warbler at Diamante Pass on April 14. Amadon and Phillips (1947:578) secured this species "in mesquite about twenty miles west of Saltillo on August 28." Dickerman saw Townsend's Warblers in the Sierra de la Madera on December 13, 1953; 20 mi. S Ocampo on April 4, 1954; and 13 mi. E San Antonio de las Alazanas on April 10, 1954.

Dendroica virens (Gmelin).—Dickerman saw one Black-throated Green Warbler 13 mi. E San Antonio de las Alazanas, 9350 feet, on April 10, 1954, in a white pine-Douglas fir-aspen association. This seems to be the first record of this species in Coahuila.

*Dendroica chrysoparia Sclater and Salvin.—Miller, Friedmann, Griscom, and Moore (1957:251) listed the Golden-cheeked Warbler from Hipolito on July 3.

Dendroica occidentalis (Townsend).—Specimen examined: one, [Male] 31592, from 13 mi. E San Antonio de las Alazanas, April 10, 1954.

The Hermit Warbler seems to be an uncommon spring and probably fall migrant in Coahuila. Miller, Friedmann, Griscom, and Moore (1957:252) reported D. occidentalis from the State. No. 31592, whose testes were not enlarged, was obtained in a pine-spruce-aspen association.

Geothlypis trichas brachidactylus (Swainson).—Miller, Friedmann, Griscom, and Moore (1957:261) listed this subspecies of the Yellowthroat as recorded from Coahuila.

Geothlypis trichas occidentalis Brewster.—Burleigh and Lowery (1942:204) found the Yellowthroat "only on the outskirts of Saltillo, where ... [this species] was not uncommon in the thickets, especially around a small stand of marsh grass bordering a pond." Three males that Burleigh and Lowery (loc. cit.) obtained were tentatively identified as G. t. occidentalis. Dickerman saw one male Yellowthroat at San Marcos (=20 mi. S Cuatro Cienegas) on May 4, 1954.

Geothlypis nelsoni nelsoni Richmond.—Burleigh and Lowery (1942:204) noted the Hooded Yellowthroat "only on the open slopes above the summit of Diamante Pass at an elevation of about 8,000 feet" where they obtained an adult male.

*Icteria virens virens (Linnaeus).—Specimens examined: total 3: [Male] [Male] 32105-32106 from 12 mi. N, 12 mi. W Jimenez, 850 ft., June 19, 1952; and [Female] 32107 from 2 mi. W Jimenez, 850 ft., June 20, 1952.

From the paucity of records in the literature, I judge that the Yellow-breasted Chat is uncommon in Coahuila. Miller, Friedmann, Griscom, and Moore (1957:265) listed I. v. virens from Coahuila. Findley saw a Yellow-breasted Chat 2 mi. S and 3 mi. E San Juan de Sabinas on June 22, 1952. The sizes of the testes (7x4 mm.; 12 mm.) of Nos. 32105-32106, the size of the largest ovum (2 mm.) of No. 32107, and the dates (June 19, 20) on which these specimens were obtained indicate breeding by I. v. virens in northeastern Coahuila, an area southwest of the previously documented breeding range.

**Icteria virens auricollis (Deppe).—Miller, Friedmann, Griscom, and Moore (1957:264) listed this subspecies of the Yellow-breasted Chat as recorded from Coahuila.

Wilsonia pusilla pileolata (Pallas).—Specimens examined: total 3: [Male] 31501 and [Female] 31500 from Sierra del Pino (=5 mi. S, 3 mi. W Acebuches), May 13 and 14, 1954, measurements: wing, 59, 55 mm.; tail, 50, 49 mm.; culmen, 8, 8.5 mm.; tarsus, 16, 16 mm.; weight: 6, 7 gms.; and [Male] 31663 from the north foot of Sierra Guadalupe (=10 mi. S, 5 mi. W General Cepeda), 6500 ft., April 21, 1953, measurements: wing, 58 mm.; tail, 46 mm.; culmen, 8.5 mm.; tarsus, 16 mm.; weight, 7 gms.

Wilson's Warbler is a common spring and probably fall migrant in Coahuila. Miller (1955a:173) took spring migrants of W. p. pileolata from April 9 to April 27; he found W. p. pileolata at 4800 feet and at 7000 feet. Amadon and Phillips (1947:579) saw a Wilson's Warbler at Las Delicias on August 17. Burleigh and Lowery (1942:204) found Wilson's Warbler to be the most abundant of the warblers that they recorded in southeastern Coahuila. They saw W. p. pileolata on the top of the high ridges and in the arid desert country in the southeastern section of the State. Several specimens were collected by Burleigh and Lowery (loc. cit.) including an immature male from the Chorro del Agua on April 19. Dickerman saw Wilson's Warblers 16 mi. E and 18 mi. N Ocampo on May 7, 1954, and at San Marcos (=20 mi. S Cuatro Cienegas) on May 4, 1954. The sizes of our specimens as well as their color (bright olive-green above, bright yellow below) are typical for the subspecies pileolata.

Setophaga ruticilla ruticilla (Linnaeus).—The American Redstart seems to be uncommon in Coahuila. Miller, Friedmann, Griscom, and Moore (1957:268) listed one specimen of S. r. ruticilla from the State.

*Setophaga picta picta Swainson.—Specimens examined: total 2: sex ? 31096 from 26 mi. W Santa Teresa, 7050 ft., April 5, 1952; and [Male] 31671 from Canyon d. Meco in Sierra Guadalupe (=10 mi. S General Cepeda), April 23, 1953, weight, 11 gms.

The Painted Redstart seems to be locally common in Coahuila. Miller (1955a:173) found these warblers breeding in the Sierra del Carmen and said that they were "common from 6000 to 7500 feet in canyon bottom growth, in oaks, and in mixed pines and oaks;" however, he did not see any of these warblers above 7500 feet where conifers tended to dominate the vegetation. Marsh and Stevenson (1938:287) obtained a male Painted Redstart in annual molt on August 11 in oak and juniper forest at Vivoras Spring in the Sierra del Carmen and reported seeing two other Painted Redstarts at 9000 feet (see also Miller, 1955a:173). Dickerman also saw seven Painted Redstarts 20 mi. S Ocampo on April 4, 1954. The size of the testes (7x4 mm.) of No. 31671 suggests breeding by S. p. picta in the Sierra Guadalupe.

**Passer domesticus domesticus (Linnaeus).—Burleigh and Lowery (1942:204) remarked that the House Sparrow was not "a common bird around Saltillo" although they noticed P. d. domesticus regularly. They reported House Sparrows also from the Chorro del Agua and in the high mountain valley south of Diamante Pass. Miller, Friedmann, Griscom, and Moore (1957:275) recorded P. d. domesticus from Sabinas. Baker captured House Sparrows in a bat net 12 mi. E San Antonio de las Alazanas, 9950 feet, on July 5, 1955. Although there are no other records, the House Sparrow is probably fairly common in the villages and towns of the State.