Ilians’ wart-hog. 
225 
as typical of the animal. The lower jaw contains 
only three back teeth. The two anterior ones 
are formed like the upper ones, with two and four 
roots ; and what we mentioned with regard to the 
posterior or fourth back tooth at the upper jaw, 
is perfectly applicable to the third or posterior 
one of the lower jaw. 
From the above remarks on the teeth of the 
Wart Hog, we are led to the following conclu- 
sions : — 1st, That the species examined by us, is 
at all ages provided with incisors in the upper 
and lower jaw ; and therefore, in the most marked 
manner, distinguished from the species found at 
the Cape. An additional mark of distinction is 
mentioned by Fred. Cuvier, who says, that the 
Wart Hog at the Cape has in its upper and 
lower jaw only three back teeth ; whereas the 
species examined by us constantly presents four 
in the upper jaw. But we hesitate in admitting 
this latter mark of distinction to be of much 
weight ; because, as was stated above, the anterior 
back teeth are disposed to decay, and the alveolae 
which contained the teeth are filling up, which 
might have well occurred in the case of those 
very animals which were examined by Frederick 
Cuvier. 2d, That the formation of the back 
teeth of the genus Phascochaeres occurs in a two- 
fold type ; we must adopt one regarding the 
formation and manner of nourishment for the 
VOL. XXIII. 
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