LEPORINE HYRACOTHERE. 423 
dentia, Without intending to imply that the present 
small extinct Pachyderm was more closely allied to the 
Hyrax than as being a member of the same order, and 
similar in size, I have proposed to call the new genus which 
it unquestionably indicates, Hyracotherium, with the spe- 
cific name leporinum. The form and structure of the 
molar teeth determine this interesting extinct genus to 
belong to the same natural family of the Hog tribe, as 
the Cheropotamus. 
From the same deposits at Herne Bay, Mr. Richardson 
obtamed two small dorsal vertebree, referable by the capacious 
canal for the spinal marrow (fig. 169) and the articular 
cavity for the head of the rib, excavated on opposite 
surfaces of the two vertebrae (fig. 168, c), to the Mammife- 
rous class. Their size is that which might be expected in 
the dorsal vertebre of the skeleton of the Hyracotherium 
leporinum, and, as there is no character which forbids their 
reference to a small Pachyderm, allied to the Peccari, they 
may very probably belong to the same species as the fossil 
skull which was discovered at the same place. 
Figs 168. Fig. 169. 
ee 
Dorsal vertebrae, nat. size. Eocene clay, Herne Bay. 
