FesB., 1912. MAMMALS oF ILLINOIS AND WISCONSIN — Cory. 47 
GROUP 6. Order CHIROPTERA. Bats. 
Fore limbs modified and fingers greatly elongated, supporting a leathery mem- 
brane which is attached to the hind limbs and body 
and forms a wing. 
Body covered with soft fur; wings more or 
less bare. Most of our Bats are comparatively 
small and they are often observed flying about 
in the evening. 
Family VESPERTILIONID. Bats, p. 445. 
