Chapter III: Part 3

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.