166 XJNGULATA. 



and Cautley in the ; Fauna Antiqua Sivalensis,' pi. lxviii. 

 figs. 22, 22 a. The fourth milk-molar, although of smaller 

 size, very closely resembles the true molar from Sind 

 figured, under the name of Sivamery.v sindiensis, in the 

 ' Palseontologia Indica,' ser. 10, vol. ii. pi. xxiii. fig. 11, 

 and the two are probably specifically identical. 



Collected by Sir T. ColebrooJce. Before 1828. 



M. 2397. Cast of the (?) third right upper true molar, provisionally 

 referred to this species. The original is preserved in the 

 Indian Museum, Calcutta, and was obtained from the 

 Lower Siwaliks of Sind ; it is figured by the present 

 writer in the ' Palaaontologia Indica,' ser. 10, vol. ii. 

 pi. xxiii. fig. 11, as Bivameryoc sindiensis. 



Presented by R. LydeTcJcer, Esq., 1885. 



Genus non det. 



27795. Fragment of the left ramus of the mandible, containing 

 pm. 4, and the impression of the lateral surfaces of the 

 three true molars ; from the Lower Miocene of Sauvetat 

 (Puy-de-D6me), France. This specimen appears to indi- 

 cate a form very close to Dichodon. Together with the 

 next specimen, it is entered in the Museum Register as 

 Merycomenus. Croizet Collection. Purchased, 1848. 



27800. Fragment of the mandible, -containing pm. 4 ; from the 

 Lower Miocene of Sauvetat. 



Croizet Collection. Purchased, 1848. 



Family CiENOTHERIID^E. 



Dentition:—!. |, C. ~, Pm. -, M. |. There are usually five 

 columns, or cusps, on the crowns of the upper true molars (which 

 may be of a selenodont or a bunodont structure), two of which are 

 placed on the anterior, and three on the posterior lobe; but in 

 Mouillactherium the middle cusp on the posterior lobe of m. 3 is 

 absent, and in the bunodont Acothemdum it is wanting in all the 

 three teeth of this series It is probable that in all the genera the 

 metapodials, and the navicular and cuboid were distinct. Riiti- 

 meyer places the family between Dichodon and Xiphodon. 



