FAUNA AMERICANA. 267 



It is supposed that the fossil skulls found in 

 Siberia, have been carried there on the ice; 

 should they really prove to have belonged to 

 the musk oxen, which is not clearly ascertained, 

 as Cuvier has remarked. 



Genus. 

 Bos, Linn. Briss. Erxleb. Bodd. Cuv. Geoffi 



iiiig. 



Taurus, Storr. 

 The Ox. 



CHARACTERS. 



r Incisor 0. 

 rsuperior 12. < Canine 0. 



Dental formula.— Teeth 32.J C Molar 12. 



j C Incisor 8. 



Unferior 20. < Canine 0. 



C Molar 12. 



Inferior incisors regularly arranged, broad ; 

 bod}' of large size, supported by stout legs; head 

 powerful, facial line straight ; ears large, move- 

 able; eyes large; tongue long and smooth; a large 

 muzzle at the end of the snout; no lacrhymal de- 

 pressions; horns simple, conical, smooth, a trans- 

 verse section circular, of various curvatures, but 

 often directed laterally, with the point elevated. 



A dew-lap, or longitudinal cuticular fold beneath 

 the neck, more or less pendant ; tail moderate, or 

 rather long, terminated by a brush of long hairs; 

 four mammai ; no inguinal pores ; no tufts of hairs 

 on the wrist. 



