Tamias dorsalis Baird, 1855 . Proc. Acad. Nat. Sci. Philadelphia, 7:332.

TYPE LOCALITY: "Fort Webster, Coppermines of the Mimbres" Restricted by Howell (1929: 131) to near present site of Santa Rita, Grant Co., New Mexico .

DISTRIBUTION: E Nevada, S Idaho, Utah, SW Wyoming, and NW Colorado south through Arizona and W New Mexico (USA) to NW Durango, W Coahuila, and coastal Sonora (Mexico).

SYNONYMS: canescens (J. Allen, 1904); carminis (Goldman, 1938); grinnelli (Burt, 1931); nidoensis (Lidicker, 1960); sonoriensis (Callahan and Davis, 1977); utahensis (Merriam, 1897).

COMMENTS: Subgenus Neotamias . Reviewed by Callahan and Davis (1977) who included sonoriensis in this species and by Hart (1992, Mammalian Species, 399).