PAL^OTHEEIID^;. 15 



M. 2433. Several fragments of the mandible and detached lower 

 molars ; from the Eocene of Mauremont. These teeth 

 agree with the one figured by Gaudry, op. cit. p. 127, 

 fig. 158. Purchased, 1885. 



Pachynolophus cervulus (P. Gervais 1 ). 



Syn. Lophiotherium cervidum, P. Gervais 2 . 



This species is apparently known only, by the mandible, which 

 indicates a rather larger species than the last. 

 Hob. Europe. 



43553. Casts of three fragments of the mandible, with the teeth. 

 The originals are from the Upper Eocene of Alais (Gard), 

 Erance. Presented by Dr. Kowalevshy, 1872. 



M. 2434. Several specimens of lower molars ; from the Eocene of 

 Mauremont, Switzerland. The specimens of m . 3 agree 

 precisely with the one figured by Biitimeyer in the 

 Denkschr. schw. Ges. Nat. vol. xix. art. 3, pi. iv. fig. 50. 



Purchased, 1885. 



Family PAL^OTHERIID.^. 



The upper premolars are either simpler, or quite as complex as the 

 true molars ; the lower molars are crescentoid, and the third lobe of 

 in. 3 may be either well developed or almost wanting ; all the cheek- 

 teeth are brachydont, and when cement is present it does not fill 

 the valleys. There are three digits in each foot. 



Genus PALiEOTHERIUM, Cuvier 3 . 



Including : — Plagiolophus, Pomel 4 . 



Paloplotherium, Owen 5 . 



Dentition :— I. '\, C.\, Pm. ( J=^, M. |. In the typical species the 

 four premolars are present in both jaws, pm. 4 is as complex as m. 1 , 

 and Pji^S as pm. 4 ; but in those species forming the so-called genus 

 Plagiolophus (Paloplotherium) the hinder lobeofpm.4js more or less 

 aborted, and pm. 3 is much simpler than pm J 4. There is, however, 



1 Zool. et Pal. Fran9aises, 1st ed. vol. i. p. 56 (1848-52), Lophiotherium. 



2 Loo. cit. 



3 Ann. d. Museum, vol. iii. p. 289 (1804). 



4 Bull. Soc. G6ol. France, ser. 2, vol. iv. p. 586 (1847). 



• , Quart. Journ. Geol. Soc. vol. iv. p. 17 (1848; read 1847). 



