XVI.] 



UNGULA TA. 



267 



Order Ungulata. — All the known animals of this order 

 agree in the complete suppression of the pollex, in the 

 absence of an os centrale, and in the complete separation of 

 the scaphoid and lunar. The carpus is very compact, the 

 bones being generally more or less square, and articulating 



Fig. 93 



Fig 94. 



Fig. 95. 



Fig. 93. — Bones of the manus of Tapir {Tapinis indictis), \. 

 Fig. 94.— Bones of the manus of Rhinoceros (Rhinoceros suinatrensis), \. 

 Fig. 95.— Bones of the manus of a Horse {Equus cabalhcs), ^. 11 and iv rudimentary 

 metacarpals. 



by flat surfaces with each other, and with the radius and 

 ulnar above. They are eminently digitigrade, the limb 

 being entirely supported on the ungual phalanges, which are 

 large, and encased in a hoof. 



The digits are arranged according to one or the other of 



