98 SPERMOPHILUS. 



Eyelids and under parts white. Tail, above grizzled grayish drab, 

 terminal third blackish, bordered with buff: beneath buff with sub- 

 terminal black band. 



Measuremerits. Total length, 156; tail vertebrae, 60; hind foot, 28. 



125. mohavensis. {Spermopliihis), Merr., N. Am. Faun., No. 2, 1889, 



P- 15- 



Type locality. Mojave River, California. 



Geogr. Distr. Mojave Desert, California. 



Genl. Char. Size equal to S. tereticaudus: tail about half the 

 length of body; feet large; ears rudimentary. 



Color. Above grizzled grayish brown; beneath whitish; tail 

 above like back mixed with black, bordered with white; below white, 

 bordered by black. 



Measurements. Total length, 230; tail vertebrae, 68; hind foot. 38. 



126. tereticaudus. {Sper/no/'liilus), Baird, N. Am. Mamm., 1857, 



P- 315- 



Type locality. Fort Yuma, California. 



Geogr. Distr. Central California to Southern Arizona on Tucson 

 Plain. 



Genl. Char. Tail as long as four fifths head and body; no spots 

 on body, feet broad, soles hairy. 



Color. Above grizzled grayish brown; beneath brownish white. 

 Tail like back, brown at end, tip yellowish. 



Measurements. Total length, 248; tail vertebrae, 112; hind 

 foot, 35. 



127. neglectus. (Spermophilus), Merr., N. Am. Faun., No. 2, 1889, 



p. 17. 



Type locality. Dolan's Springs, Arizona. 



Geogr. Distr. Arizona. 



Genl. Char. Similar to .V. /<'/r/;Vtf«</«i'/ tail and hind feet shorter; 

 soles densely haired; tail half as long as head and body. 



Color. Above grizzled grayish brown; beneath yellowish white. 

 Tail, above and below like back with a subterminal black border. 



Measurements. Total length, 278; tail vertebrae, 74; hind foot, 32. 



128. mexicanus. [Citillns), Licht. Darst. Neu. Saug., 1830, pi. 31, 



fig- 2. 



Type locality. Toluca, Mexico. 



Geogr. Distr. In United States, vicinity of the Rio Grande, 

 Texas and southern New Mexico. 



Genl. Char. Tail about half as long as body; ears short, size 

 medium. 



Color. Above dark yellowish to reddish brown, with nine or 



