Sciurus (Hesperosciurus) griseus Ord 1818
Sciurus (Hesperosciurus) griseus Ord 1818, J. Phys. Chim. Hist. Nat. Arts Paris, 87: 152.
Type Locality: "The Dalles of the Columbia" [River, Wasco Co., Oregon, USA].
Vernacular Names: Western Gray Squirrel.
Subspecies::
Subspecies Sciurus (Hesperosciurus) griseus subsp. griseus Ord 1818
Subspecies Sciurus (Hesperosciurus) griseus subsp. anthonyi Mearns 1897
Subspecies Sciurus (Hesperosciurus) griseus subsp. nigripes Bryant 1889
Distribution: C Washington, W Oregon, and California (USA) to Baja California Norte (Mexico).
Conservation: IUCN – Lower Risk (lc).
Discussion: Subgenus Hesperosciurus (Hall, 1981:433) . Reviewed by Carraway and Verts (1994, Mammalian Species No. 474).