The Golden-fronted Woodpecker occurs throughout Coahuila, but uncommonly in the western part. Wetmore (1948:185-186) examined a series of Golden-fronted Woodpeckers that showed a definite cline in dorsal coloration from north-central Texas to Jalisco, Michoacan, and Hidalgo in south-central Mexico. He (_loc. cit._) stated that "the extremes are easily separable, but in southern and southwestern Texas and in northeastern Mexico the two kinds [_C. a. aurifrons_ and _C. a. incanescens_] ... merge so gradually that over a broad area the whole population is intermediate, making decisions as to any sharply drawn dividing line difficult and in part arbitrary." _C. a. incanescens_, according to Wetmore, occurs in western and central Texas south to northeastern Chihuahua and northern Coahuila whereas _C. a. aurifrons_ occurs in north-central Coahuila (Monclova) and southern Texas south to Jalisco, Michoacan, Hidalgo, and central Tamaulipas. The specimens that I have examined from Coahuila are variably intermediate between the subspecies _aurifrons_ and _incanescens_. The dark and white cross-bars on the back of No. 31039 are nearly equal (dark bands wider in _aurifrons_; white bands wider in _incanescens_); the rump and upper tail coverts are more or less mixed with black as in _aurifrons_. The dark cross-bars on the backs of Nos. 32054-32057 are slightly larger than the white cross-bars; the rump and upper tail coverts of these specimens are somewhat mixed with black. *_Centurus aurifrons incanescens_ Todd.--This subspecies of the Golden-fronted Woodpecker is listed by Miller, Friedmann, Griscom, and Moore (1957:34) from "... northern Coahuila (upper Rio Grande valley)." Burleigh and Lowery (1942:192) stated that the Golden-fronted Woodpecker "apparently avoids the mountain slopes, but was found to be not uncommon on the arid plateau about Saltillo." Findley saw Golden-fronted Woodpeckers 2 mi. W Jimenez, 850 feet, on June 19, 1952; and 2 mi. S and 3 mi. E San Juan de Sabinas on June 22, 1952. Cory (1919:424) listed the Golden-fronted Woodpecker from Sabinas. Nos. 32055-32057 are juveniles, and thus document breeding by this woodpecker in Coahuila. *_Melanerpes formicivorus formicivorus_ (Swainson).--_Specimens examined:_ total 5: [Male] 31040 (skeleton only) from Fortin (=33 mi. N, 8 mi. W San Geronimo), 3300 ft., March 28, 1952; [Male] 29423 and [Female] 29424 from Club Sierra del Carmen (=2 mi. N, 6 mi. W Piedra Blanca), 4950 ft., April 8, 1950; [Female] 31041 (skeleton only) from 26 mi. W Santa Teresa, 7050 ft., April 5, 1952; and [Female] 31668 from Sierra Guadalupe, Canyon d. Meco (=10 mi. S General Cepeda), 6500 ft., April 23, 1953.