422 HYRACOTHERIUM. 
the anterior boundary of the orbit. The under surface of 
the palatal processes of the maxillary bones is rugose, as in 
the Peccari; the portion of the skull, including the inter- 
Fig. 166. Fig. 167. 
Under view. Upper view. 
Skull of Hyracotherium, nat. size. Eocene clay. 
maxillary bones and the incisive teeth, is unluckily broken 
off and lost. 
The general form of the skull was probably intermediate 
in character between that of the Hog and the Hyraz. The 
large size of the eye indicated by the capacity of the orbit, 
must have given to the physiognomy of the living animal 
a resemblance to that of the Hare, and other timid Ro- 
