207 



84 1 1 . The three metatarsals of the American Tapir, similarly numbered ac- 

 cording to the toes to which they are analogous in the pentadactyle foot. 



Purchased. 



842. The three phalanges of the inner toe of the Palceotherium crassum, cor- 



responding to the second in the pentadactyle foot. The last or ungual 

 phalanx is broader, flatter and more rugged than in the Tapir. 



Presented by Baron Cuvier. 



842'. The three phalanges of the American Tapir. Purchased. 



843. The three phalanges of the middle toe of the Palceotherium crassum. 



Presented by Baron Cuvier. 



843'. The corresponding phalanges of the American Tapir. Purchased. 



844. The three phalanges of the outer toe of the Palceotherium crassum. 



Presented by Baron Cuvier. 



844'. The corresponding phalanges of the American Tapir. Purchased. 



845. The astragalus of the Palceotherium magnum: it closely resembles, save in 



size, that of the Palaotherium crassum. Presented by Baron Cuvier. 



8-46. The calcaneum of the Palceotherium magnum. 



Presented by Baron Cuvier. 



Genus Rhinoceros. 



847- A cast of the cranium of the Rhinoceros tichorhinus, Cuv. The original 

 was discovered in the drift formation in Siberia, and is figured in Cuvier's 

 ' Ossemens Fossiles,' ed. 1822, pi. 12. The skull of the extinct two- 

 horned tichorhine Rhinoceros surpasses in length not only absolutely but 

 proportionally to its breadth, that of any known existing species ; the 

 nasal bones are more especially produced, and the rugous surface for the 

 anterior horn which they support is an oblong ellipse, traversed by a 

 median longitudinal ridge, whilst in the African two-horned Rhinoceros 



