XVI.] 



FER1SSODA C TYL A . 



295 



The second and fourth toes may be subequally developed, as 

 in the Rhinoceros (Fig. 100), or they may be represented 

 only by mere splint like rudiments of their metacarpals, as in 

 the Horse (Fig. 101). All intermediate conditions are met 

 with in various extinct forms, as PalcRotherium^ Anchitherium, 



FIG. 



IOO. 



FIG. 



101. 



IL 



Jl 



FiG. 99- 



FIG. loo. 

 FIG. 101. 



-Bones c the manus of Tapir (Tapirus indicus), }. 

 Bone.s>f the manus of Rhinoceros (Rhinoceros suinati ensis), ?. 

 -Bonesof the manus of Horse (Eguus cabaLus), %. n and iv rudimentary 

 metcarpals. 



and Hippirion. In the Tapir (Fig. 99) there are four 

 complete oes, in consequence of the fifth being developed, 

 though it ^carcely reaches the ground in walking. In other 

 respects tie foot resembles that of the Rhinoceros, the third 

 toe beim longest, and symmetrical in itself and having on 



