jELIANS’ wart-hog. 
221 
their full growth, of both sexes, have, in the inter- 
maxillary bone, two incisors, which have their 
crowns turned inward, and their roots sharply 
pointed in an outward direction, wedged into the 
lower plate of the intermaxillary bone. These 
upper incisors are of greater size in males than in 
females, are generally larger in animals that have 
obtained their full growth than in younger ones, 
and do freely rise a few lines above the axis of 
the palate. In the lower jaw, we observe six 
incisors, which are not wanting even in the very 
old animals. The lower incisiors, to the number 
of six, have invariably been found of larger size 
in old animals than in young ones, and none of 
the oldest individuals we possess want either of 
these teeth. 
Second, The upper corner teeth have on their 
outer and inner surface a groove, which is con- 
tinued with the curve at the teeth. This groove 
is wanting in the lower corner teeth, which in old 
animals are by a third smaller than the upper 
ones. 
Third, In all which we used for our general 
description, both in young animals and such as had 
obtained their full growth, of both sexes, we found 
in the upper jaw four back teeth, and three in 
the lower jaw. The first and second are small, 
narrow, roundish, with simple crown-globules, 
and with two roots wedged into two separate 
