Sciurus griseus Ord, 1818 . J. Phys. Chim. Hist. Nat. Arts Paris, 87: 152.

TYPE LOCALITY: U.S.A., Oregon, Wasco Co., The Dalles, Columbia River .

DISTRIBUTION: C. Washington, W. Oregon, and California (U.S.A.) to Baja California Norte (Mexico).

COMMENT: Subgenus Hesperosciurus; see Hall, 1981:433. Moore, 1959, Bull. Am. Mus. Nat. Hist., 118:153-206, included Hesperosciurus in subgenus Sciurus .

ISIS NUMBER: 5301410002030012001.