LEPORINE HYRACOTHERE. 419 
PACHYDERMATA. HYRACOTHERIUM. 
Skull of Hyracotherium leporinum, nat. size. Eocene clay. 
THE LEPORINE HYRACOTHERE,. Hyracothe- 
rium Jeporinum. 
ITyracotherium leporinum, OwEN, Geological Transactions, second series, 
vol. vi. p. 203. 
Tue fresh-water eocene marls of the Isle of Wight 
appear to be much richer in mammalian remains than 
the contemporaneous formation called the London clay ; 
here, however, certain genera, as Lophiodon and Palao- 
therium, have been found which exist in the eocene 
gypsum in France, and the remains of which also occur in 
the fresh-water marls of the Isle of Wight; and the 
interesting fossil to be described in the present section, 
although it indicates a genus not hitherto found in the 
older tertiary beds on the Continent, demonstrates the 
extinct quadruped of which it formed part to have been as 
distinet, generically, as the Anoplotherium or Palaotherium, 
EE 2 
