86 SPERMOPHILUS. 



Genl. Char. Ears small; tail short, black dorsal stripe wanting ; 

 angle of mandibular ramus much developed. 



Color. Above grizzled grayish brown tinged with vinaceous pos- 

 teriorly ; narrow white stripes on sides ; Banks tinged with pale chest- 

 nut ; orbital ring and lower part of body yellowish white. Tail flat, 

 above black and white edged with white ; beneath white bordered 

 with black and edged with white. Some specimens exhibit little or 

 no differences between the upper and lower sides of the tail. 



Measurements. Total length, 260; tail vertebra;, 88; hind foot, 41. 



a.—saxicolus. {Spermopkiliis), Mearns, Proc. U. S. Nat. Mus. Wash., 

 1895, p. 444. 



Type locality. Tinajas Altas, Gila Mountains, Yuma county, 

 Arizona. 



Geogr. Distr. Gila Mountains in southwestern Arizona, into 

 Sonora. 



Gejil. Char. Colors pallid; tail rather long. 



Color. Like 5. harrisii, but all hues much paler, and tail longer. 



Measurements. Total length, 245; tail vertebra^ 93; hind foot, 40. 



105. leucurus. {Tamias), Merr. , N. Am. Faun., No. 2, 1889, p. 20. 

 Type locality. San Gorgonio Pass, California. 



Geogr. Distr. California and Utah to Arizona and New Mexico. 



Genl. Char. Smaller than T. harrisii, tail shorter, below white. 



Color. Above grizzled gray, vinaceous on head and rump; out- 

 side of legs salmon; white stripe on side of back; under parts white. 

 Tail, above iron gray with indistinct white border; beneath white, 

 bordered with black. 



Measurements. Total length, 209; tail vertebrae, 69; hind foot, 38. 



a. — cinnamomeus. (Taimas), Merr. N. Am. Faun., No. 3, 1890, pp. 

 51 and 52. 



Type locality. Echo Cliffs, Painted Desert, Arizona. 



Geogr. Distr. Desert Region, Colorado, Utah, and Arizona. 



Genl. Char. Ears, tail, and hind feet larger than in T. leucurus. 



Color. Upper parts uniform pale cinnamon, lined with black; 

 paler on shoulders, legs and rump; rest of coat similar to T. leucurus. 



Measuretnents. Total length, 220; tail vertebra:-, 76; hind foot, 40. 



106. interpres. (Tamias), Merr., N. Am. Faun., No. 4, 1890, p. 21. 

 Type locality. El Paso, Texas. 



Geogr. Distr. Northwestern Te.xas, limits of range undeter- 

 mined. 



Color. Winter Pelage. Above grizzled gray tinged with vinace- 

 ous; shoulder, hips and outer surface of legs ochraceous buff; white 



