Fep., 1912. Mammats or ILLinois AND WisconsIn— Cory. 475 
Genus NYCTICEIUS Rafinesque. 
Nycticeius Rafinesque, Journ. de Physique, LX XXVIII, 1819, 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; 
mamme 2.” (Miller, /. ¢., p. 118.) 
Dental formula: I. Es CG; eee Pa. M. 3-3 = 30. 
3-3 I-I 2-2 3-3 
Nycticeius humeralis (RAFINESQUE). 
RAFINESQUE Bat. 
4 
Vespertilio humeralis RAFINESQUE, Amer. Month. Mag., III. 1818, p. 445. 
N [ycticeius] humeralis RAFINESQUE, Journ. de Physique, LXX XVIII, 1819, p. 417. 
Nycticejus humeralis Ruoaps, 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.). Hann, Ann. Rept. Dept. Geol. & Nat. Resources Ind., 1908 (1909), 
p. 649. Woon, Bull. Ill. State Lab. Nat. Hist., VIII, 1910, p. 600 (Illinois). 
HowELL, Proc. Biol. Soc. Wash., XXIII, 1910, p. 33 (Illinois, 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 (J. c., p. 600), which is the most northern 
record we have for the state. 
