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, Merriam, C. H., Proc. Biol. Soc. Washington, 11:189-190, July 1, 1897.
Eutamias, Howell, A. H., N. Amer. Fauna, 52:26, November 30, 1929.
Tamias, Ellerman, J. R., The families and genera of living rodents. British Mus. (Nat. Hist.), 1:426, June 8, 1940.
Tamias, Bryant, M. D., Amer. Midland Nat., 33:732, March 1945.
Diagnosis.—Skull lightly built, narrow; postorbital process light and weak; lacrimal not elongated; infraorbital foramen lacks canal, relatively larger than in most sciurids; P3 present; head of malleus not elongated; plane of manubrium of malleus 90 degrees to plane of lamina; hypohyal and ceratohyal bones of hyoid apparatus fused in adults; conjoining tendon between anterior and posterior sets of digastric muscles ribbonlike; keel on dorsal side of tip of baculum; tail more than 40 per cent of total length; five longitudinal dark stripes evenly spaced and subequal in width; two lateral dark stripes short.
Subgenus Eutamias Trouessart
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.