This subspecies of the Black-throated Sparrow occurs in northwestern Coahuila. Miller (1955a:176) stated that the Black-throated Sparrow was moderately common in the open desert scrub at the base of the Sierra del Carmen below 4800 feet. He said that the series of Black-throated Sparrows from the Sierra del Carmen "resembles most the race _opuntia_ of western Texas ... but shows some intergradation toward _grisea_ of southern Coahuila and toward _A. b. bilineata_ of eastern Coahuila." He remarked also that the specimen from Jardin del Sur, which Marsh and Stevenson (1938:287) reported as _A. b. grisea_, was in extremely worn, dirty summer plumage and contributed nothing reliable to racial determination. *_Amphispiza bilineata grisea_ Nelson.--_Specimen examined:_ one, [Male] 31665, from the north foot of Sierra Guadalupe (=10 mi. S, 5 mi. W General Cepeda), 6500 ft., April 25, 1953. _A. b. grisea_ is the subspecies of Black-throated Sparrow in southern Coahuila. Burleigh and Lowery (1942:208) saw this sparrow "frequently on the arid plateau around Saltillo" and obtained specimens there that were identified as _A. b. grisea_. Amadon and Phillips (1947:581) saw individuals on August 8 and 28 that were feeding "fledged young near Saltillo." The size of its wing (68.5 mm.), the slaty color of its back, and the size (8 mm.) of the white spot on its lateral tail feather suggest that No. 31665 is characteristic of _A. b. grisea_. The size of the testes (4.5x3 mm.) of No. 31665 indicates that _A. b. grisea_ may breed in southern Coahuila. *_Junco phaeonotus palliatus_ Ridgway.--_Specimens examined:_ total 3: [Male] 35402 (skeleton only) from 13 mi. E San Antonio de las Alazanas, 9345 ft., April 10, 1954; [Female] 33226 (skeleton only) from 13 mi. E San Antonio de las Alazanas, 9950 ft., July 6, 1955; and [Male] 31633 from Mesa de Tablas, 8600 ft., January 16, 1954, weight, 22 gms. In Coahuila the Mexican Junco seems to be common. Miller (1955a:177) found it in the conifers of the upper Corte Madera drainage at 7500 feet and up to 8800 feet on Loomis Peak in the Sierra del Carmen. Marsh and Stevenson (1938:287) took an adult in Vivoras Canyon on August 14 in the Sierra del Carmen. Sutton and Burleigh (1939a:46) found small flocks at Diamante Pass in March. Burleigh and Lowery (1942:208-209) noted _J. p. palliatus_ as a common bird of the mountain slopes above an elevation of about 7000 feet in southeastern Coahuila, and obtained specimens at Diamante Pass. Ridgway (1901:300) recorded _J. p. phaeonotus_ from Sierra Encarnacion. His record should be of _J. p. palliatus_ as indicated by Miller, Friedmann, Griscom, and Moore (1957:386). Dickerman saw Mexican Juncos in the Sierra de la Madera on December 13, 1953.