FOSSIL HORSE. 



395 



quadruped of similar size. The last phalanx, or hoof-bone, 

 is an equally characteristic bone ; a reduced view of the 

 upper and anterior surface of one of these, obtained with 



Fig. 155. Fig. 156. 



Astragalus of fossil Horse, nat. 

 size, Oreston. 



Hoof-phalanx of fossil Horse, ^ nat. 

 size, Oreston. 



the other bones of the hind-foot from the same fissure at 

 Oreston, is given in fig. 156 



The contemporary species associated with the Equus 

 fossilis in the Oreston Caverns, but indicated to be distinct 

 by the structure of the molar teeth above described, I have 

 called, in my ' Report on British Fossil Mammalia,'* Equus 

 plicidens, on account of the characteristic plications of the 

 enamel. I have not yet seen any teeth from British strata 

 having the well marked characters of those of the Hippo- 

 therium of Dr. Kaup (Equus caballus primigenius of M. H. 

 v. Meyer) ; but the teeth of the extinct slender-legged 

 Horse, or Hippothere, transmitted by Capt. Cautley to the 

 British Museum, are identical with those of the above 

 species from the European miocene. 



* ' Trans. Brit. Association,' 1843, p. 231. 



