FEB., 1912. MAMMALS OF ILLINOIS AND WISCONSIN CORY. 471 



Type locality New York. 



Distribution North America, from the Rocky Mountains to the 

 . Atlantic coast, north to Quebec, Manitoba and Keewatin, and 



south to the Gulf states, where it is replaced by a slightly different 



form. 



Description Upper front teeth (incisors) between canines, 2 ; whole 

 of upper surface of interfemoral membrane furred, 

 except on extreme edge; tragus somewhat triangular 

 in outline, with a slight concavity on anterior border 

 just below the tip; general color varying from bright 

 reddish brown to yellowish or yellowish red; a small 

 whitish patch in front of the shoulder. 

 Measurements Total length, about 4.25 in. (108 mm.); tail, 2 in. (51 



mm.); foot, .33 in. (8 mm.). 



The Red Bat is found throughout Illinois and Wisconsin and is 

 one of our most common species. There are specimens in the Field 

 Museum collection from Olive Branch (Alexander Co.), Willow Springs, 

 Chicago, and Maywood, Illinois; and from Beaver Dam, Dodge Co., 

 Wisconsin. Miller records it from Mount Carmel, Olney, Warsaw 

 and West Northfield, Illinois (/. c., p. 108); Wood considers it the most 

 common Bat in the vicinity of Urbana, Champaign Co. (/. c,, p. 597). 

 Wisconsin specimens are preserved in the Milwaukee Public Museum 

 collection from Milwaukee, Wai worth and Rock counties. Snyder 

 states that it is abundant at Beaver Dam, Dodge Co.; and I am satis- 

 fied that a number of Bats seen by me flying about the houses at Wood- 

 ruff, Vilas Co., in July, 1908, were this species, although no specimens 

 were taken. 



The Red Bat usually makes its home in hollow trees and there is 

 little reason to doubt that it occasionally at least resorts to caves, al- 

 though this is denied by some writers. Hahn, who has had extensive 

 acquaintance with the cave fauna of Indiana and Kentucky, states that, 

 while he has never met with a live one in caves, he found some 200 

 skulls of this species in Shawnee cave at Mitchell (/. c., p. 635), which 

 would seem to be almost conclusive evidence of their presence there 

 in the past. 



According to various authorities the young are born in May and 

 number from i to 4. 



Specimens examined from Illinois and Wisconsin: 

 Illinois Olive Branch, Alexander Co., 3; Chicago, 9; Willow Springs, 



i; Maywood, 1 = 14. 

 Wisconsin Beaver Dam, Dodge Co., 3; (M. P. M.) Milwaukee, 20; 



Delavan, Walworth Co., i; Milton, Rock Co., i; Janesville, Rock 



Co., 3 = 28. 



