AIPPCPOTAMID£E a9 
contined to the Old World. The dentition may be expressed by the 
== 
1 : 
formula i = ais) P5.m 
3 
wy w 
. The crowns of the molars (Fig. 100) 
when worn present rretuilchaiped surfaces of dentine: and those of 
tae premolars are sharp. The 
facial portion of the skull is much 
elongated, the orbits are tubular 
and very prominent, and che man- 
dible has a large rounded descend- 
ing dance at ics angle. The ears 
are small, the tail is short. and the 
legs are likewise so short that che 
belly i is raised a a little distance 
abore the ground. The brain is 
not richly eony calanod, and divers 
aS consider oly from thar of 
the Pics. approximating in some 
respects to that of the Camel and 
Laos bar on aes pha 
an axial length of 11 feet, and measurin 
the zreater curvature. Irs axcs is the pricras being 
cuated almost in the pelvis. and i dointo three distinet 
compartments, of which the hind is eviindrieal The liver of che 
adult is of extremely Simple form, elonzated sransverse.y. and narrow 
from above downwards. With the excepvion of a few vats of 
upwards of 15 feet along 
