ZOOLOGICAL POSITION AND STRUCTURE 1 1 
existing ungulates are divisible into two main groups, 
or suborders, namely, the odd-toed ungulates, or 
Artiodactyla, among which the ox is included, and 
the even-toed ungulates, or Perissodactyla, of which 
ABC 
Bones of the Right Fore-Foot of a Pig (A), a Deer (B) 
AND A Camel (C) 
U, ulna, or larger leg-bone ; A', radius, or smaller leg-bone ; /, c, u, s, 
till, td, bones of the wrist or carpus ; below these are the metacar- 
pals, fused in B and C into a cannon-bone ; II, III, IV, V, toe- 
bones [after Sir IV. H. Flower). 
the horse and the ass are the two domesticated 
representatives. 
The Artiodactyla, or even-toed group, take their 
name (compounded from the Greek artios^ equal, and 
dactuloSj a finger or toe) from the circumstance that 
