UN(iULATA 45 



Order XJngulata. 



Toes more or less completely enclosecl by horny hoofs or 

 with broad claws; no clavicles; molar teeth with ridged or tnb- 

 erctilated grinding surfaces. 



Suborder Artiodactyla. 



Feet cleft; first toe wanting; second and fifth toes small, 

 rudimentary or absent. 



Superfaniily Pecora. Rnniinants. 

 Stomach with four compartments; food regurgitated and 

 remasticated ; horns or antlers usually present ; upper canine teeth 

 usually absent, sometimes present and occasionally largely de- 

 veloped. 



'MM'k^ 



1 



Tails of Deer. 

 1. Mule Deer. 2. Black-tailed Deer. 3. Virginia Deer 4. Wapiti. 



