76 



SKETCH or THE HISTORY OF MAMMALIA. 



38.— Skull of the Hos. 



The skull of the hog (Fig-. 38,) which affords an index 

 of the habits of the animal, is of a conical or wedge-like 

 form; the base or occipital portion forms a right angle 

 with the oblique upper surface, and a bold transverse 

 ridge is formed by the union of the occipital and parietal 

 bones. The nasal bones are prolonged nearly to the end 

 of the snout, which, in the living animal, terminated in a 

 moveable cartilaginous disc, pierced by the nostrils. 

 The lower jaw is of great strength. The dentition 



6 1—1 



(Fig. 39) is as follows : — Incisors, - ; canines 



6' 



1—1 



