354 



COMPARATIVE ZOOLOGY. 



FIG. 347 Wolf (Lupus occidental). United States. 



six in each jaw. There are always two sets. The 

 skull is comparatively small, the jaws are shorter and 



deeper than in Un- 

 gulates, and there 

 arenumerousbony 

 ridges on the in- 

 side and outside 

 of the cranium 

 the high occipital 

 crest being special- 

 ly characteristic. 

 The cerebral hem- 

 ispheres are joined 

 by a large corpus 

 callosum, but the 

 cerebellum is nev- 

 er completely cov- 

 ered. Both pairs 

 of limbs are well 

 developed, the 

 front being pre- 

 hensile; but the 

 clavicles are rudi- 

 mentary. The bu- 

 rn erus and femur 

 are mainly en- 

 closed in the body. 

 The digits, never 

 less than four, al- 

 ways have sharp 

 and pointed 



FIG. 349. Hed Fox (Vulpes fulvus) . United States. claWS I81 The bodv 



is covered with abundant hair. 



Carnivores are divided according to the modifications 

 of the limbs: a. Pinnigrades, having short feet expanded 



FIG. 348. Ermine- weasel (Putorius Noveboracen&is). 

 United States. 



