158 TTNGULATA. 



the three true molars is 0,0302, which is practically the 

 same as in the specimen described by Filhol. There is a 

 distinct cingulum to the molars, which are larger than 

 those of Prodremotherium elongatum. Purchased, 1884. 



M. 2152. Fragment of the left maxilla, containing the three true 

 molars, and a fragment of mm. 4 ; from the Upper Eocene 

 of Cay lux. The length of the space occupied by the three 

 molars is 0,0295. Purchased, 1885. 



M. 1416. Fragment of the right maxilla, containing the last five 

 cheek-teeth ; from the Upper Eocene of Caylux. These 

 teeth agree in size with those of the last specimen, but 

 have a less distinct cingulum ; the two specimens may be 

 specifically distinct. Purchased, 1884. 



M. 1417. Fragment of the right maxilla, containing the last four 

 cheek-teeth ; from the Upper Eocene of Caylux. The 

 teeth agree with those of the last specimen. 



Purchased, 1884. 



M. 1471. Fragment of a left maxilla, with m. 1 and m.2 , 



belonging to the present species ; from the Upper Eocene 

 of Caylux. Purchased, 1884. 



In the attenuated character of their premolars, and the distinct 

 pit at the posterior border of pm. 4, the following specimens agree 

 with the present genus, although neither of them accords exactly 

 with the description of the type mandible of the present species. 



M. 1420. Part of the right ramus of the mandible, containing the 

 six cheek-teeth (pm. 4 broken), in a well-worn condition ; 

 from the Upper Eocene of Caylux. The length of the 

 space occupied by the three true molars is 0,036, and the 

 depth of the ramus in front of mTi 0,0166, and behind 

 mT3 0,0215. Purchased, 1884. 



M. 1422. Fragment of the left ramus of a mandible, containing 

 mm. 4 , m. 1 , and m. 2 , and probably belonging to the same 

 species as the last ; from the Upper Eocene of Caylux. 



Purchased, 1884. 



M. 1421. Part of the left ramus of a mandible, containing the last 

 four cheek-teeth, in an unworn condition, and probably 

 belonging to a different species from the two last j from 

 the Upper Eocene of Caylux. The length of the space 



