PAL^OTHERIID-E. 21 



indicate a larger animal than the others. The relative size of the 

 teeth of the two forms indicates, however, that this reference is pro- 

 bably erroneous ; and the writer has therefore followed Bravard's 

 MS. Catalogue and provisionally reversed the Cuvierian association. 

 It is sometimes very difficult to distinguish the teeth of the two 

 species, as they are liable to some variation in size. The nasals are 

 shorter than in P. crassum. 

 Hub. Europe. 



11811. Cast of the skull. The original was obtained from the 

 Upper Eocene of Montmartre, near Paris, and is in the 

 Paris Museum of Natural History ; it is figured in De 

 Blainville's ' Osteographie,' Genus Palceotherium, pi. i. 

 The length of the space occupied by the first six upper 

 cheek-teeth is 0,110. 



Mantell Collection. PtircJiased, 1836. 



29509. Fragment of the left maxilla, containing the last five cheek- 

 teeth ; from Montmartre. 



Hastings Collection. Purchased, 1855. 



44879 a. Three associated left upper cheek-teeth, provisionally 

 assigned to this species ; from Montmartre. 



Presented by B. Bright, Esq., 1873. 



29874. The third left upper true molar ; from Montmartre. 



Hastings Collection. Purchased, 1855. 



28235. Part of the right maxilla, containing the last five cheek- 

 teeth ; from the Upper Eocene of Debruge, near Apt (Vau- 

 cluse), France. The dimensions of the teeth figured by 

 Gervais in the Zool. et Pal. Frangaises, 2nd ed. pi. xxix. 

 fig. 6 (total length 0,131), agree precisely with those of the 

 present specimen. Bravard Collection. Purchased, 1852. 



28235 a. Fragment of the left maxilla, with the three true molars ; 

 from Debruge. Bravard Collection. Purchased, 1852. 



28235 b. Several fragments of maxillae, with some of the cheek- 

 teeth ; from Debruge. 



Bravard Collection. Purchased, 1852. 



29812. The inner half of the third left upper true molar; from the 

 Upper Eocene of the Isle of Wight. 



Hastings Collection. Purchased, 1855. 



M. 2630. Part of the palate ; from the Isle of Wight. The last 

 three premolars are shown ; the fourth being of unusually 

 large transverse diameter. No history. 



