Specimens examined, 3: nos. 2102 and 2103 Louisiana State University from 20 mi. E Morelia, 7,300 ft., and no. 1369 B. Villa R. from 1½ km. N San Juan 2,250 meters.
Remarks.—Tree squirrels of this kind have been reported by Nelson (1899:51) from Pátzcuaro and Nahuatzin.
The young specimen, no. 2102, ♂, has the tail slender, resembling somewhat that of the S. p. senex from the southward. The underparts of the female are Warm Buff, more clearly so on the underside of the legs.
Sciurus poliopus senex Nelson
Michoacán Squirrel; Spanish, Ardilla Arborícola; Tarascan, Uakuí (Wakqe)
Sciurus poliopus senex Nelson, Proc. Biol. Soc. Washington, 17:148, October 6, 1904, type from La Salada, 40 mi. S Uruapan.
Range.—Lowlands in southern part of state.
Specimens examined, 3: nos. 52004, 52014, 52015, distributed by localities as follows: Tancítaro, 6,000 ft., 1; Apatzingan, 1,040 ft., 2.
Remarks.—Specimen number 52014, ♂, represents the melanistic phase of this subspecies.
The upper parts of the hind legs in this specimen are slightly grizzled. The upper side of the tail is vermiculated with whitish and the underside of the tail is black.
Thomomys umbrinus pullus Hall and Villa
Southern Pocket Gopher; Spanish, Tuza Serrana; Tarascan, Cúmu (Cŏmŏ)