354 
COMPARATIVE ZOOLOGY. 
six in each jaw. There are always two sets. The 
skull is comparatively small, the jaws are shorter and 
Fig. 347.—Wolf (Lupus occidentalis). United States. 
Fig. 34S.—Ermine-weasel (Putorius Noveboracensis). 
United States. 
Fig. 349 —lied Fox (Vulpes fulvus ). United States. 
is covered with abundant hair. 
deeper than in Un¬ 
gulates, and there 
are numerous bony 
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 hu¬ 
merus and femur 
are mainly en¬ 
closed in the body. 
The digits, never 
less than four, al¬ 
ways have sharp 
and pointed 
claws. 181 The body 
Carnivores are divided according to the modifications 
ot the limbs: a. Pmnigrades, having short feet expanded 
