] 62 UNGITLATA. 



27797. Fragment of the right ramus of the mandible, with m72 and 

 m. 3 ; from the Lower Miocene of Sauvetat. This is the 

 specimen noticed by Gervais in the Zool. et Pal. .Fran- 

 chises, 2nd ed. p. 156. 



Croizet Collection. Purchased. 1848 



M. 2136. Fragment of the right maxilla, containing pm. 4 and the 



(Fig.) three true molars ; from the Upper Eocene of Caylux. 



This specimen, which is figured in the accompanying 



woodcut (fig. 18), agrees so exactly in size with the 



Fig. 18. 



Lopkio?neri/x chalaniati. — Part of the right maxilla ; from the 

 Upper Eocene of Caylux. \. 



mandibles that there is every probability that it belongs 

 to the present species ; a maxilla, which is provisionally 

 referred to the same, is noticed, although not figured, by 

 Filhol in the Ann. Sci. Geol. vol. viii. art. 1, p. 227. The 

 true molars of the present specimen are like those of a 

 primitive ruminant, but the second inner crescent is 

 incompletely developed in m- 2 , and in m. 3 is rudimentary. 

 The length of the space occupied by the three true molars 

 is 0,041. Purchased, 1885. 



Genus DICHODON, Owen 1 . 



Dentition : — I. |, C. \, Pm. J, M. |. The upper true molars are 

 perfectly selenodont, with concave outer surfaces somewhat like 

 Hyopotamus ; the earlier premolars are elongated, and thereby ap- 

 proach Xiphodon. The limb-bones are unknown. The general 

 form of the dentition is illustrated in the accompanying woodcut 

 (fig. 19). 



1 Quart. Journ. Geol. Soc. vol. iv. p. 36 (1848). 



