Feb., 1912. Mammals of Illinois and Wisconsin — Cory. 475 



Genus NYCTICEIUS Rafinesque. 



Nycticeius Rafinesque, Joum. de Physique, LXXXVIII, 18 19, p. 417. 



Type Vespertilio humeralis Rafinesque. 



''Upper incisor distinctly separated from canine; lower incisors 

 scarcely crowded ; outer lower incisor tricuspidate and not smaller than 

 others; skull low and narrow; uropatagium furred at extreme base 

 only; tragus blunt and bent forward; tip of tail free from membrane; 

 mammae 2." (Miller, /. c, p. 118.) 



Dental formula: I. - — ^j C. ^-^> Pm. - — ^^ M. ^— ^= 30. 

 3-3 i-i 2-2 7,-2, 



Nycticeius humeralis (Rafinesque). 

 Rafinesque Bat. 



Vespertilio humeralis Rafinesque, Amer. Month. Mag., III. 1818, p. 445. 



N [ycticeius] humeralis Rafinesque, Journ. de Physique, LXXXVIII, 1819, p. 417. 



Nycticejus humeralis Rhoads, Proc. Acad. Nat. Sci. Phila., 1896 (1897), p. 204 



(Tennessee) . 

 Nycticejus crepuscularis True, Proc. U. S. Nat. Mus., VII, 1884 (1885), p. 602. 

 Nycticeius humeralis Miller, N. Amer. Fauna, No. 13, 1897, p. 118 (Kentucky, 



etc.). Hahn, Ann. Rept. Dept. Geol. & Nat. Resources Ind., 1908 (1909), 



p. 649. Wood, Bull. 111. State Lab. Nat. Hist., VIII, 1910, p. 600 (Illinois). 



Howell, Proc. Biol. Soc. Wash., XXIII, 1910, p. 33 (lUinois, Kentucky). 



Type locality — Kentucky. 



Distribution — Southern United States, north to Pennsylvania and 

 Illinois and west to Nebraska and Texas. 



Description — Upper front teeth (incisors) between canines 2 ; tip of tail 

 extending slightly beyond interfemoral membrane; 

 general color dull umber brown above, paler 

 below; fur decidedly darker at base; general color 

 somewhat variable, the color of the upper parts 

 occasionally approaching sepia brown; ears rather 

 small, thick and leathery; tragus short and not 



sharp pointed. 



Measurements — Total length, about 3.65 in. (92 mm.); tail, 1.40 in. 

 (35 mm.); foot, .40 in. (10 mm.); expanse, about 9.50 in. 

 So far as known, the range of the Rafinesque Bat within our limits 



is restricted to about the southern two-thirds of Illinois. There are 



specimens in the Field Museum collection from Olive Branch, Alexander 



Co.; and Howell records it from that locality; Wood states that it is 



not rare in Champaign County (/. c, p. 600), which is the most northern 



record we have for the state. 



