S0IURIM3— SPERMOPniLUS. 



819 



TABLE LXXXI. — List of specimens examined of Tamias lateralis — Continued. 



1 In Museum of Comparative Zoology, Cambridge, Maaa. 



Genus SPERMOPHILUS F. Cuv. 



Spermophilua F. Cuvieu, Me"ni. du Mas. ix, If 22, 293; Dents des Mamm. 1825, 1G1.255, pi. lv (type "Mus 



citillus, Linn."). 

 Spermophila Richardson, Parry's Second Voyage, App. 1825, 313 (— Spermophilus F. Cuv.). 

 Spermatophilus Waaler, Syst. Avium, 1830, 22 (accredited to F. Cuvier). 

 Citillus Lichtenstein, Darst. neuer Oder wenig bekannt. Siiuget. 1827-34 [1830?], pi. xxxi, fig. 2 (not 



paged). 

 Colobotis Brandt, Bull. Classe Physico-math. de l'Acad. Imp. des Sci. de St. P<5tersb. ii, 1844, 360. 

 Otocolobus Brandt, Bull. Classe Physico-math. de l'Acad. Imp. des Sci. do St. P6tersb. ii, 1844, 382 (= 



Colobotis). 

 Otospermophilus Brandt, Bull. Classe Physico-math. de l'Acad. Imp. des Sci. de St. Pe'tersb. ii, 1844, 379. 



Generic chars. — Skull very variable in form, being either narrow and 

 elongate or short and broad, with the dorsal outline moderately or strongly 

 convex, and the zygomatic arches greatly or only moderately expanded ; post- 

 orbital processes generally triangular, strong, and directed downward; zygo- 

 matic processes of the maxillary greatly depressed and expanded ; plane of 

 the malar turned outward, sometimes anteriorly nearly horizontally flattened; 

 zygomatic arches spreading; position of the anteorbital foramina more for- 

 ward than in Tamias, subtriangular, with a strongly developed tubercle at 

 the outer lower corner ; upper premolars always two, the first variable in 

 size, generally much larger than in Sciurus or Tamias, and sometimes nearly 

 as large as in Cynomys; grinding-teeth variable in strength and size; cheek- 

 pouches well developed ; body slender or thick-set ; tail long, moderate, or 

 short, cylindrical or flattened; ears large, of medium size, or rudimentary, 

 never tufted ; nail of pollex generally undeveloped ; character of the pelage 

 and pattern of coloration variable. 



As previously stated, the genus Spermophilus, as commonly recognized, 



