316 APPENDIX. 



dominating ; color above, a shade lighter than that of the former 

 species, inclining a little to hoary brown ; ash-colored beneath ; 

 a very minute blunt thumb nail on the fore foot. 

 Length of the head and body, . 3 inches, 

 Length of tail . . . 1 " 2 lines." 



Inhabits the Columbia river. — Towns. 



Townsend's Marbiot. 



Spermophilus *Townsendii, (Bach.) Journal Acad. Nat. 

 Sciences, Vol. 8, part I. Tet no, of the Walla-walla, and Nez 

 Perces Indians. 



" The body is long and rather slender. Head of moderate 

 size ; nose slightly obtuse. Ears short, scarcely a line in height ; 

 nails slender, compressed, and slightly arched ; the thumb pro- 

 tected by an acute and prominent nail ; the second claw in the 

 fore foot, as in all the species of this genus, is longest, and not the 

 third, as in the squirrels. Cheek-pouches not large. Tail thickly 

 clothed with fur, and in the dried specimen appears much flatten- 

 ed ; the fur is soft, smooth, and lustrous. 



There is a line of white above and below the eye-brows. The 

 fur on the whole of the upper surface is for one-fourth of its 

 length from the roots of a nearly black color, then a broad line 

 of silver gray, then a narrow line of dark brown, edged with yel- 

 lowish-white, with a few black hairs interspersed, giving it a 

 brownish-gray appearance. On the under surface, where the 

 hair is a little longer than on the back, it is black at the roots, 

 and cinereous at the points ; on the forehead and nose, it is 

 slightly tinged with brown. The line of separation between the 

 colors of the upper and under surface, exists liigh up along the 

 sides, and is very distinctly drawn. The tail on the upper sur- 

 face is the color of the back, slightly tinged with brown beneath; 

 the teeth are white. 



Length of the head and body, 8 inches 9 lines, 



head, 1 " 10 " 



" tail, (vertebrEe,) 1 " 



" " including fur, 1 " 6 " 



Length from heel to middle hind claw, 1 " 4 " " 



I procured a single specimen of this animal on the Columbia 

 river, about three hundred miles above its mouth, in July. It 



