205 



ridges of enamel ; the seventh molar has three lobes and crescents upon 

 the crown. 



The original of this specimen is figured in plate 53 of the edition of 

 the ' Ossemens Fossiles' above cited. 



Presented by Baron Cuvier. 



832. The left radius of the Palceotherium crassum, Cuv. The head of the bone 



coi responds nearly with that of the Tapir, but is narrower from before 

 backwards ; and the salient angle of its posterior margin, by which it in- 

 terlocks with the ulna, is less acute and less prominent. The body of the 

 bone is more slender than in the American Tapir ; the configuration of 

 the distal end is nearly the same as in the Tapir, but the intertendinal 

 prominences and ridges are less developed. 



Presented by Baron Cuvier. 



833. The radius and bones of the right fore-foot of the Palaotherium crassum, 



Cuvier. 



Presented by the Professors- Administrators of the Museum of Natural 

 History of Paris. 



The following casts are of the bones of the left fore-foot of the same indivi- 

 dual Palaeothere. 



834. The astragalus of the Palceotherium crassum : it presents a deep trochlear 



surface for the tibia ; a large rhomboidal articulation anteriorly for the os 

 naviculare, which is continuous with a narrow facet externally for the cuboid 

 bone, as in the Rhinoceros and Tapir : the cuboidean facet in the Horse is 

 much narrower, that in the Hog and Ruminants is much broader. There 

 are two distinct articulations for the calcaneum besides the one continued 

 from the scaphoidal surface : the outer and posterior articulation is con- 

 cave and deeper than in the Tapir ; the inner and anterior one is narrower 

 and more convex than in the Tapir. Presented by Baron Cuvier. 



834'. The astragalus of the American Tapir. 



Purchased. 



835. The left calcaneum of the Palceotherium crassum. It presents two distinct 

 surfaces for the astragalus, besides a small portion continued from the 



