**_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.