Our specimen of the Sharp-shinned Hawk is referred to _velox_ on the basis of the reddish, maculated breast, sides, and thighs. The collector's field notes recorded the iris as blood-red. Marsh and Stevenson (1938:286) thought that this subspecies was resident in the pine and Douglas-fir forest of upper Vivoras Canyon of the Sierra del Carmen at 8500 feet, where Marsh observed a family group including three immature birds. Friedmann (1950:196) indicated that the immature male obtained by Marsh and Stevenson is _A. s. suttoni_; Miller (1955a:161), nevertheless, remarked that this male has well barred feathers and thus is _velox_. Miller (_loc. cit._) obtained also an adult male of _A. s. velox_ in the Sierra del Carmen at 7000 feet on April 18.
**_Accipiter striatus suttoni_ van Rossem.--_Specimen examined:_ one, [Male] 32626, from 13 mi. E San Antonio, 9950 ft., July 6, 1955, measurements: wing, 186 mm.; tail, 144 mm.; tarsus, 49 mm.; culmen, 11 mm.; weight, 103 gms.
The recording of _A. s. suttoni_ in Coahuila by Friedmann, Griscom, and Moore (1950:52), seems to have been based on their knowledge of the specimen earlier mentioned by Friedmann (1950:196) and later identified by Miller (1955a:161) as _A. s. velox_. Therefore the KU specimen seems to be the first record of _A. s. suttoni_ in Coahuila. The size of its testes (right, 2.5×4 mm.; left, 3×4 mm.) does not indicate breeding; however, the time of the year in which it was obtained suggests that it may have been a resident.
*_Accipiter cooperii_ (Bonaparte).--Miller (1955a:161) found Cooper's Hawk breeding in the Sierra del Carmen on April 26.
_Buteo jamaicensis borealis_ (Gmelin).--The Red-tailed Hawk is common in Coahuila. Burleigh and Lowery (1942:188) noted the Red-tailed Hawk on the higher ridges above an elevation of 6000 feet in southeastern Coahuila. On April 17, Burleigh and Lowery (_loc. cit._) saw two Red-tailed Hawks "in the open valley south of Diamante Pass" and on April 20, "just outside of Saltillo," these workers obtained an immature male that was referred to _B. j. borealis_.
**_Buteo jamaicensis fuertesi_ Sutton and Van Tyne.--Miller (1955a:161) took a male Red-tailed Hawk, on April 14 at 7000 feet in the Sierra del Carmen, that was referred to as _B. j. fuertesi_. To my knowledge, there are no other records of this subspecies from Coahuila, but this must be the resident form over the bulk of western Coahuila.