_Eutamias_ Trouessart, E. L. Catal. Mamm. viv. et foss., Rodentia, in
Bull. Soc. d'Etudes Sci. d'Angers 10:86-87, 1880. Type _Sciurus
striatus asiaticus_ Gmelin.
_Eutamias_, Howell, A. H., N. Amer. Fauna, 52:26, November 30, 1929.
_Eutamias_, Ellerman, J. R., The families and genera of living rodents.
British Mus. (Nat. Hist.), 1:426, June 8, 1940.
_Eutamias_, Bryant, M. D., Amer. Midland Nat. 33:732, March 1945.
_Diagnosis._--Size large; lambdoidal crest moderately developed;
supraorbital notches distinctly anterior to posterior notch of zygomatic
plate; baculum with faint keel on dorsal surface of tip which curves
upward; pelage coarse; ears broad, rounded, of medium height.
_Geographic range._--Palearctic. West to Dvina and Kama rivers, Vologda,
and Kazan, in European Russia. South to southern Ural Mountains, Altai
Mountains; Kansu, Szechwan, Shensi, Shansi, and Chihli provinces of
China; Manchuria and Korea. East to Hokkaido Island, Japan; Kunashiri
Island, southern Kurile Islands; Sakhalin Island, and Yakutsk, Siberia.
North nearly to Arctic Coast in Siberia and European Russia (Ellerman
and Morrison-Scott 1951:503).