TAMIAS. 91 



(/. Tdinifts cinereicoUis canijn'S (Bailey). 



Eutamias cinereicoUis canipes Bailey, Proc. Biol. Soc. Wash., xv, 

 1902, p. 117. 

 Gray-footed Chipmuxk. 



Type locality. Guadalupe Mountains, El Paso County, Texas. 

 Altitude, 7,000 feet. 



Genl. Char. Similar to T. cinereicoUis in fresh post-breeding 

 pelage but grayer; paler ochraceous on sides; tips of long hairs on 

 rump and upper surface of tail white instead of yellowish; feet clear 

 gray; black dorsal stripe reaching to between ears. 



Measurements. Total length, 230; tail vertebrae, 104; hind foot, 

 35. Skull: basal length, 30; length of nasals, 11; zygomatic width, 

 19.3; mastoid breadth, 15.8; length of upper molar series, alveolar 

 border, 5.8. 



176. Tamias umbrinus Allen. 



Tamias umbrinus Allen, Bull. Am. Mus. Nat. Hist. N. Y., 1890, 

 p. 96. Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 1901, 

 p. 75. Zool. Ser. 

 Dark Chipmuxk. 



Type locality. Uintah Mountains, Utah, south of Fort Bridger, 

 Sweetwater County, Wyoming. 



Geogr. Distr. Wahsatch and Uintah Ranges of northern and 

 central Utah, north into Wyoming. 



177. Tamias quadrivittatus (Say). 



Sciiiriis quadrivittatus Say, Long's Exped. Rocky Mts., 11, 1823, 



P; 45- 

 Tamias quadrivittatus Elliot, Syn. X. Am. ]\Iamm., F. C. M. Pub., 



II, 1 90 1, p. 75. Id. Mamm. Middle Amer. & W. Indies, 



F. C. M. Pub., IV, Pt. I, 1904, p. 13S. Zool. Ser. 



Colorado Chipmunk. 



Type locality. Arkansas River, Colorado, "near where it breaks 



through the foothills." Park County? 



Geogr. Distr. State of Durango, Mexico, north to southern 



boundary of Colorado,- northward through Wyoming to and including 



the Yellowstone National Park. 



a. Taiin'ff.s- qufKfyiriftf(fus gracilis Allen. 



Tamias quadrivittatus gracilis Allen, Bull. Am. Mus. Nat. Hist. 

 N. Y., 1890, p. 99. Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 

 II, 1901, p. 76. Zool. Ser. 

 Graceful Chipmunk. 



Type locality. San Pedro, Socorro County, New Mexico. 



