CITELLUS. 101 



Q\ CHclhts spilosonia arenfi (Bailey). 



Spermophilus spilosonia arens Bailey, Proc. Biol. Soc. Wash., xv, 

 1902, p. 118. 



L.\XGUISHING SpERMOPHILE. 



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



Geogr. Distr. Limits of range unknown. 



Genl. Char. Similar to C. cryptospilotiis but larger, spots coarser. 

 Skull: longer, nasals wider, dentition heavier. 



Color. Above light clay or dark buffy, spotted over back and 

 rump with white without black edgings. 



Measurements. Total length, 237; tail vertebrae, 85; hind foot, 

 35. Skull: basal length, t,t,\ length of nasals, 12; zygomatic breadth, 

 18; length of upper molar series, 7. 



192. Citellus cryptospilotus (Merriam). 



Spermophilus cryptospilotiis Merr.. X. Am. Faun., No. 3, 1890, 

 p. 57. Elliot, Syn. X. Am. Mamm.. F. C. M. Pub., 11, 1901, 

 p. 97. Zool. Ser. 

 Desert Spermophile. 



Type locality. Tenebito Wash, Painted Desert, 25 miles east of 

 he Little Colorado, Coconino County, Arizona. 

 Geogr. Distr. Painted Desert, Arizona. 



193. Citellus canescens (Merriam). 



Spermophilus cauesceus Merr., X. Am. Faun., Xo. 4, 1890, p. 38. 



Elliot, Syn. X. Am. Mamm., F. C. M. Pub., 11, 1901, p. 97. 



Zool. Ser. 

 Dr.\b Gray Sper.mophile. 



Type locality.. Wilcox, Cochise County, Arizona. 

 Geogr. Distr. Southeastern Arizona. 



194. Citellus eremonomus Elliot. 



Citellus eremonomus Elliot, Pub. Field Columb. Mus., in, 1903, 

 p. 243. . Zool. Ser. 

 Death Valley Spermophile. 



Type locality. Furnace Creek, Death Valley, Inyo County, Cali- 

 fornia. 



Genl. Char. Size small ; color dark ; tail with only basal half like 

 the back. Skull: similar to that of C. t. mohavensis, but processes 

 of the pterygoids do not touch the bullae. 



Color. Upper parts grizzled vinaceous cinnamon; sides of face, 

 nose, and body, inner sides of limbs and entire under parts silvery 

 white; fore feet pale brown, hind feet whitish; tail above, basal half 

 grizzled vinaceous cinnamon like the back, terminal half blackish 



