158 PROCEEDINGS OF THE ACADEMY OP 



and prominent in the young, the black borders most so in the adult. No in- 

 dication of a longitudinal arrangement into lines of the spots. Crown nearly 

 of the ground-color of the back ; stripe under the eye tinged with reddish-brown, 

 and the edges of ears and top of nose light reddish-brown in strong contrast 

 with the other parts. Under parts generally dirty whitish, sometimes tinged 

 with light sandy-brown. Tail above near its base, the color of the back, 

 largely mixed with black posteriorly, and bordered and tipped with whitish ; 

 no distinct subterminal bar of black. The superior and lateral hairs with a 

 single annulation of black. The under surface light reddish-brown, bordered 

 and tipped by whitish, and with an indistinct subterminal border of black, 

 mostly concealed by the overlaying unannulated hairs of the under side of 

 the tail. 



Closely related to S. spilosoma of which it is a northern representative. Is, 

 however, readily distinguishable by the different coloration and much narrower 

 skull. 



Nabraska, Dr. Suckley, Dr. Cooper, Dr. Hayden. 



Spermophilus elegans. 



Length of head and body about 1 inches ; tail with hairs less than three- 

 sevenths as long. Body moderately slender, but stouter than in S. richard- 

 sonii; head narrower and more tapering, though less so than in S. \3-lineatiis. 

 Ears rounded, distinct, a quarter of an inch in height. Feet moderately large, 

 with the claws elongated, slender and curved. Tail about one-fourth shorter 

 than in S. richardsonii, and twice as wide, much flattened ; the central hairs 

 above and below closely appressed, those on the sides widely distended. Color 

 above pale dusky-gray, with a slight brownish wash and indistinct dark-brown 

 mottlings along the middle of the back, without distinct spots. Under parts 

 grayish-white, tinged with pale yellowish-brown or pale brownish cream-color, 

 this deepest along the middle of the belly on the buttocks and outside of thighs, 

 and arms; the chin, throat and inside of thighs and arms nearly pure white. 

 Tail above of the color of the back, but more tinged with yellowish-brown, and 

 with a subterminal narrow border, and broad bar of black widely edged and 

 tipped with whitish; beneath clear yellowish-brown, the central hairs without 

 darkannulations. with an indistinct subterminal border and indistinct bar of 

 black, broadly edged by whitish. 



This species is most nearly related to S. richardsonii. 



Fort Bridger, Utah, C. Drexler. 



Spermophilus armaths. 



Length T to 8 inches, vertebrae of tail a little over 2 inches; tail with hairs 

 about two-fifths the length of head and body. Form stout, as much so as in 

 S. franklinii ; head broad, ears large and distinct as in S. franklinii, the auricle 

 one-third of an inch in height. Feet rather large, fore claws considerably 

 arched and very strong. Tail short, but full, as bushy as in S. franklinii, 

 though with shorter hairs. Hair of the back dense and soft. Color above, 

 including crown, finely-mixed dark-gray and black, with a slight wash of dark- 

 brown along the middle of the back; the colors uniformly and intimately 

 mixed, and without any tendency to form spots or lines. Ears, shoulders, out- 

 side of thighs, and the buttocks ochry-brown, in strong contrast with the 

 general color. Tail both above and below mixed gray and black, all the 

 hairs beings annulated, with a subterminal border and tip of black edged ex- 

 ternally with gray. 



In its heavy body, strong claws, and rather bushy tail, this somewhat re- 

 sembles S. franklinii. The size, coloration, etc., at once distinguish it, how- 

 ever, from that species. 



Fort Bridger, Utah, C. Drexler. 



[June, 



