FIELD BOOK OF MAMMALS 



Florida Big Brown Bat. — Eptesicus fuscus osceola Rhoads. 



Resembling typical fuscus but darker in color. Upperparts 



cinnamon-brown. Total length, 4.5 inches; tail vertebras, 



1.8 inches; hind foot, .4 inch. Found in peninsular Florida. 

 Colorado Brown Bat; Pale Brown Bat. — Eptesicus fuscus 

 pallidus (Young). 



Paler and larger than typical fuscus but otherwise very much 



like it. Upperparts brownish ashy ; underparts silvery gray. 



Total length, 5 inches; tail vertebrse, 2 inches^; hind foot, 



.48 inch. Taken at Boulder, Colorado. 



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Eptesicus is the commonest of the larger Bats found in the 

 United States. Its size and fairly steady flight are good 

 distinguishing characters. Although its flight traces abrupt 

 changes of direction, it is one of the least erratic fliers among 

 the North American Bats. It is not infrequently heard to 

 utter its high-pitched, squeaky call, and is often seen about 

 street lights in large cities where it finds congenial abodes in 

 dark nooks in the roofs or inaccessible crannies in the buildings. 



Several observers have stated that in the eastern states 

 the Big Brown Bat does not appear until rather late, but in 

 the West I have noted them as quite early, very shortly after 

 sundown, in fact. This Bat flies fairly high and shows a 

 preference for meadows, clearings in the forest, and over 

 water-courses. It may enter houses through open doors or 

 windows. 



The number of young at a birth is one or two. The Big 

 Brown Bat either hibernates or migrates from the regions of 

 cold autumns and winters. In New York City it is not an 

 uncommon thing to come across the Big Brown Bat hiber- 

 nating in some building. 



Genus Nycteris 



Dentition: Incisors, \\ Canines, \; Premolars, |; Molars, f =32. 



Red Bat. — Nycteris borealis 



and its subspecies 



General Description. — A medium-sized Bat of conspicuous 

 reddish coloration. Ears low, broad, rounded; tragus broad 

 at base, tapering at point; pelage long and lax; interfemoral 

 membrane densely furred on upper surface, sparingly furred 



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