THE COMMON HIPPOPOTAMUS. 157 
the end of the nose ; in the other, which is larger, 
it is scarcely the sixth. In the animal of the 
Cape, the lower lateral incisors are more bent. 
The canine teeth do not seem to be similarly used 
in the two animals, which would argue, that there 
was a different mechanism employed in the move- 
ments of the jaw ; and they are always larger in 
the Senegal animal. Very many smaller distinc- 
tions are pointed out, which occur in comparing 
the different bones of the animals ; but these it is 
impossible to describe without an actual compari- 
son. They are, upon the whole, not considered 
less than those which the Baron has pointed out 
as separating the fossil from the living species. 
He has applied to them the titles of H. Capensis 
and H. Senegalinsis. 
Three fossil species have been indicated — H. 
major, minor, and medius. 
