

AXTHKACOTHEEIIILE. CHCEROPOTAMID^]. 247 



Anthracotheriiim, sp. d. 

 Hab. England. 



29856. The right ramus of a mandible, containing m . 2 and m. 3, 

 apparently belonging to the present genus ; from the 

 Headon beds (Upper Eocene) of Hordwell, Hampshire. 

 The molars are larger, and the jaw is deeper than in 

 A. gressli/i, but the structure of the teeth is very similar. 

 The length of m . 3 is 0,014, and the depth of the jaw 

 behind that tooth 0,026. 



Hastings Collection. Purchased, 1885. 



Family CHCEROPOTAMID^E. 



The true molars are intermediate in structure between those of 

 Anthracotherium and the more generalized Suidce like Hyotherium. 

 Those of the upper jaw have five columns, arranged as in the 

 Anthracotheriidce. Cliceropotamus steinheimensis, Eraas (vide Jahresh. 

 Yer. Xat. "Wiirtt. 1SS5, pi. v.), seems to belong to Hyotherium. 

 Ceboclicerus is noticed in the Addenda. 



Genus CHCEROPOTAMUS, Cuvier ' . 

 Dentition :— I. | C. \, Pm. |. M. |. There is a third lobe to nT3. 



Cheer op otamus gyp so rum, Desmarest 2 . 



Syn. Ch&ropotamus euvieri, Owen 3 . 



Cho?i'opotamits jjarisiensis, Blainville 4 . 

 Chcerqpotamus affinis, P. Gervais 5 . 



The upper true molars resemble those of Anthracotherium silis- 

 trense, but have shorter crowns, with a less approach to a selenodont 

 structure. 



Hub. Europe. 



30667. Part of the right maxilla, showing the last four cheek- 

 teeth in a worn and somewhat broken condition; from 



1 Ossemens Fossiles. 2nd ed. vol. iii. p. 260 (1S22), Chceropotame. 



2 Mammalogie, p. 545 (1822\ 



3 Trans. Geol. Soc. ser. 2, vol. vi. p. 41 (1841 [read 1S38]). 



4 ' Osteofrranhie.' Genus Chceropotamus, pi. i. (1846). 



:i Zool. et Pal. Franqaises. 1st ed. vol. i. p. 95 (1848-52). 



