HOFFMEISTER & MOHR: ILLINOIS MAMMALS 



41 



Order ARTIODACTYLA 



Family Cervidae — deer 



Odocoileus virginianus White-tailed deer 



KEY TO ORDERS 

 Whole Animals 



1. Forelimbs in the form of wings, fig. 39 



Order CHIROPTERA ; bats 



Forelimbs in the form of legs 2 



2. Feet each with 1 or 2 large, hard hoofs 3 



Feet each with 4 or 5 clawed toes 4 



Snout 



Thu-rrvb (Pollex) 



Fig. 39. — Detailed outline of wing of bat. 



