Ailen.] 290 [February 4, 



Hab. The Great Plains, and the desert region generally of the in- 

 terior of the continent. 



c. var. Pallasi. 



Sciurus striatus (in part only) of the older authors. 

 Tamias Pallasi Baird, 11th Rep. Smith. Inst., 55, 1857. 



Had. Northeastern Asia; northern North America, west of Lake 

 Winnipeg, south to United States; not west of the main chain of 

 the Rocky Mountains. 



d. var. Townsendi. 



Tamias Townsendi Bachm., Journ. Phil. Acad. Nat. Sci., viii, 68, 



1839. —Baird, Mam. N. Am., 300, 1857. 

 Tamias Hindei Gray, Ann. and Mag. Nat. Hist., x, 264, 1842. 

 Tamias Cooperi Baird, Proc. Acad. Nat. Sci. Phila., vn, 334, 1855. 

 Tamias quadrimdcidatus Gray, Ann. and Mag. Nat. Hist., 3d Ser., 



xx, 435, 1867. 

 Hab. Pacific Coast, from Northern California north to Sitka ? and 

 east to the Cascade Range. 



e. var. dorsalis. 



Tamias dorsalis Baird, Proc. Acad. Nat. Sci. Phila., yii, 332, 1855. 

 — Ibid., Mam. N. Am., 300, 1857. 

 Hab. Arizona; Utah. / 



9. Tamias lateralis. 



Sciurus lateralis Say, Long's Exped. R. Mts., n, 46, 1823. 

 Spermophilus lateralis Baird, Mam. N. Am., 312, 1857. 



Hab. Rocky Mountains, from New Mexico northward (to latitude 

 57°, according to Richardson). 



Genus Spermophilus. 



10. Spermophilus Harrisi. 



Spermophilus Harrisi Aud. and Bach., Quad. N. Am., in, 267, 1854. 

 — Baird, Mam. N. Am., 313, 1857. 

 Hab. The Great Interior Basin (Utah, Nevada, Arizona?) and 

 Lower California. 



