CITELLUS. 139 



at the mouths of their burrows, vigilant watchmen of danger's 

 approach. The different species are striped, spotted, or otherwise 

 marked in various colors, and some are exceedingly pretty creatures. 



36. Citellus. 



T 1-1 - piz- M 2=3 _ 22 

 !-,_,. ^-,-j. M - 3 _ 3 - 22 - 



Citellus Oken, Lehrb. der Zool., n, 1816, p. 842. Type Mus citellus 



Linnaeus. 



Spermophilus F. Cuv., Mem. Mus., vi, 1825, p. 293. 

 Spermatophilus Wagl., Syst. Av. Amphib., 1830, p. 22. 

 Citilhis Lichten., Darst. neuer oder wenig bekannt. Saugeth., Heft 



5, 1827-34, pi. xxxi, fig. 2. 

 Colobotis Brandt, Bull. Classe Phys-math. Acad. Imp. Scien. St. 



Petersb., n, 1844, p. 365. 

 Otospermophilus Brandt, Bull. Classe Phys-math. Acad. Imp. 



Scien. St. Petersb., n, 1844, p. 379. 

 Otocolobus Brandt, Bull. Classe Phys-math. Acad. Imp. Scien. St. 



Petersb., n, 1844, p. 382. 



Ictidomys Allen, Mon. N. Am. Rod., 1877, p. 821. 

 Spermophilopsis Blasius, Tag. Deut. Nat. Vers., 1884, p. 324. 

 Ammospermophilus Merr., Proc. Biol. Soc. Wash., vn, 1892, p. 27. 

 Xerospermophilus Merr., Proc. Biol. Soc. Wash., vn, 1892, p. 27. 

 Calospcrmophilns Merr., Proc. Biol. Soc. Wash., n, 1897, p. 189 



(note). 



FIG. 23. CITELLUS "AMMOSPERMOPHILUS) H. SAXICOLA. 

 No. 59869 U. S. Nat. Mus. Coll. Nat. size. 



