TAMIAS. !M 



a. Tainias ciiiercicollis cdiiijtcx (Bailey). 



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



1902, p. 117. 

 GRAY-FOOTED CHIPMUNK. 



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

 Altitude, 7,000 feet. 



Genl. Char. Similar to T. cinereicollis 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 vertebra, 104; hind foot, 

 35. Skull: basal length, 30; length of nasals, n; 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., n, 1901, 

 p. 75. Zool. Ser. 

 DARK CHIPMUNK. 



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). 



Sciurus quadrivittatus Say, Long's Exped. Rocky Mts., n, 1823, 



P- 45- 

 Tamias quadrivittatus Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 



n, 1901, p. 75. Id. Mamm. Middle Amer. & W. Indies, 

 F. C. M. Pub., iv, Pt. i, 1904, p. 138. 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. Tdiiiifts qiiadririttdt-HS 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., 

 n, 1901, p. 76. Zool. Ser. 

 GRACEFUL CHIPMUNK. 



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



