FOSSIL MAMMALIA. Ill 



that its senses were analogous to theirs, and that it was covered 

 with hairs somewhat similar to those ruminants. 



There is one ^dichobune pretty nearly the size of the hare, 

 and named An. Leporinum. Besides its subgeneric characters, 

 it differs from the anoplotheria and xiphodons in having two 

 small and slender toes on each foot, at the sides of the two 

 great toes. It is not ascertained whether these two lateral toes 

 exist or not in the two other dichobunes. They must have 

 been very small species, and scarcely larger than the aperea. 



Another genus of the pachydermata, found in the gypsum of 

 Paris, is the Ch^ropotamus. This is known only by the 

 teeth and some parts of the head. The incisors, if there were 

 any, are lost. The lower canine is pointed, and tolerably large. 

 Between it and the first molar is an empty space. This molar 

 is conical, pointed, and slightly compressed, but by no means 

 trenchant, and has two thick roots, which separate as they 

 sink into the alveolus. The second is rather more compressed, 

 and has also two roots ; and behind its point, which is blunt, 

 are other points, much lower, and scarcely projecting, which 

 form a second lobe. Then come two teeth, which are tubercu- 

 lous. There are four principal tubercles on the coronal, which 

 is nearly rectangular. In the middle of these tubercles are two 

 smaller ones, and there are some other inequalities about their 

 bases. They resemble the third and fourth molars of the 

 babyroussa, and these teeth, in general, seem to indicate an 

 animal of the swine family. But no known swine has the first 

 molar of this conical form, and the pecari alone has a canine 

 so small as the chaeropotamus, and is, besides, a smaller animal 

 than the individual to whom the teeth we have been describing 

 belonged. 



From these and some other fragments, the Baron concludes, 

 that the plaster- quarries inclose the remains of an animal more 

 approximating to the genus porcus, than the anoplotherium or 

 palaeotherium, and which did not yet resemble precisely the 

 living swine. He suspects that the dichobunes, whose feet so 



