Big Brown Bat Eptesicus fusciis jiisciis 



may be, in the northern limits of its range, but in Penn- 

 sylvania it usually hibernates during the winter in 

 caves, attics, or hollow trees. In mild winters it oc- 

 casionally leaves its winter home for short flights. 



The big brown bat is a great destroyer of June 

 beetles, mosquitoes and other night flying pestiferous 

 insects. It can be distinguished in flight by its size, the 

 animal having a wing spread of more than twelve 

 inches. It usually bears two young which may be 

 found attached to the mother at the beginning of the 

 hibernating period. 



The bats have numerous sharp teeth with many 

 cusps for crushing the chitinous external skeletons of 

 beetles and other insects. 



-«>C 78 ^- 



