MAMMALS OF UTAH 47 



WHITE-TAILED SPERMOPHILE: 

 ANTELOPE SQUIRREL 



AMMOSPERMOPHILUS LEUCURUS CINNAMOMEUS 



(Merriam) 



Tamias leucurus cinnamomeus Merriam N. Am. F. No. 3, p. 52, 

 1890. 



Description — Back grizzled, black, white, and rufous ; 

 top of head rufous; very little black intermixed; a distinct 

 white stripe on either side of back, about one-eighth of an 

 inch wide, extending from shoulder to hip ; shoulders, sides 

 of body below stripe and flanks, and upper surfaces of feet, 

 a light rufous or cinnamon color; light ring about eye; 

 under surface of body white; upper surface of tail black, 

 white edged, under surface white, mixed black and white 

 border and tip. Total length, 8.50; tail vert. 2.50; hind 

 foot, 1.60. (Warren.) 



Distribution — White River, Grand River, and 'streams 

 tributary to the Colorado and Green Rivers. It also occurs 

 in northern Arizona, southern Utah, southwestern Colorado 

 and northeastern New Mexico. S. H. Locke says they are 

 common in the desert region about LaSal National Forest. 



Habits — Antelope squirrels frequent sandy arroyos and 

 are striking objects as they frisk about in the morning sun- 

 shine with the pure white under surface of the upraised 

 tail showing prominently. They are easily alarmed and re- 

 treat precipitately to the burrows, which are usually in the 

 sandy bank of a dry desert wash or beneath sage or Atriplex 

 bushes. (Gary.) 



CHESTNUT-TAILED SPERMOPHILE 



CITELLUS CASTANURUS (Merriam) 



Tamias chrysodeirus Merriam, N. A. F. No. 4, 1890, p. 19. 

 Spermophilus chrysodeirus Elliot, Syn. N. Am. Mamm, F. C. 

 M. Pub. II, 1901, p. 84. Zool. Ser. 



Description — Color : Head and neck to shoulders ferru- 

 ginous chestnut, lightest on the sides of the neck. Inner 

 black stripe nearly as broad, long and sharply defined as the 

 outer, in this respect resembling T. chrysodeirus of the Wa- 

 satch. Belly hairs dusky at base as in T. chrysodeirus, but 



