Feb., 1912. Mammals of Illinois and Wisconsin — Cory. 473 



Atalapha cinerea H. Allen, Bull. U. S. Nat. Mus., No. 43, 1893, p. 162 (St. Louis, 

 Missouri). Evermann & Butler, Proc. Ind. Acad. Sci., 1893 (1894), p. 135 

 (Indiana). 



Lasiurus cinerea Snyder, Bull. Wis. Nat. Hist. Soc, II, 1902, p. 125 (Wisconsin). 



Lasiurus cinereus Allen, Proc. Bost. Soc. Nat. Hist., XIII, 1869 (1871), p. 187 

 (Iowa). Miller, N. Amer. Fauna, No. 13, 1897, p. 114 (Illinois, Minnesota, 

 etc.). Adams, Rept. State Board Geol. Surv. Mich., 1905 (1906), p. 31 (Michi- 

 gan). Jackson, Bull. Wis. Nat. Hist. Soc, VI, 1908, p. 33 (Wisconsin). Hol- 

 lister, Bull. Wis. Nat. Hist. Soc, VI, 1908, p. 142 (Wisconsin). Hahn, Ann. 

 Rept. Dept. Geol. & Nat. Resources Ind., 1908 (1909), p. 637 (Indiana). Wood 

 Bull. 111. State Lab. Nat. Hist., VITI. 1910, p. 599 (Illinois). 



Type locality — Philadelphia, Pennsylvania. 



Distribution — Practically the whole of North America south of Hudson 

 Bay and the Great Slave Lake region. 



Description — Color of body hoary (brown mixed with whitish) ; upper 

 surface of interfemoral membrane covered with fur except on the 

 extreme edge; forehead and band across the throat buff color, 

 bordered below by blackish; edge of ears black; muzzle blackish, 

 a narrow black stripe extending above the eyes. 



Measurements ■ — ^ Total length, about 5.30 in. (130 to 140 mm.); tail, 

 2.1 2. in. (54 mm.); foot, .40 in. (10 mm.); extent (spread of wing 

 in fresh specimens) 15.75 ""^^ (4°° mm.); forearm, about 2 in. 

 (50 mm. or more). 



The color is somewhat variable, but its brown color frosted with 

 white (not reddish or yellowish red as in N. borealis) and larger size 

 will distinguish it from that species, and the completely furred inter- 

 femoral membrane from other species which occur within our limits. 



The Hoary Bat, while apparently by no means common, occurs 

 throughout Illinois and Wisconsin. There are specimens in the Field 

 Museum collection taken in Chicago and I have examined a specimen 

 taken by Mr. T. L. Atkinson at Charleston, Coles Co. Miller records 

 it from Warsaw, Hancock Co.; and Wood includes it in his Mammals 

 of Champaign Co., Illinois. I have secured a specimen September 5, 

 19 10, at Lake Geneva, Walworth Co., Wisconsin, and have examined 

 specimens from Rock and Milwaukee counties of that state. Hollister 

 records one from Delavan, Walworth Co.; Snyder, one from Dodge 

 County; and Jackson, from Janes ville and Milton, Rock Co. 



Although not as 3^et recorded from northern Wisconsin or southern 

 Illinois, specimens have been taken in Minnesota (Miller), Michigan 

 (Adams), Iowa (Allen), Indiana (Hahn), and Missouri (H. Allen). 



This large Bat probably occurs most commonly in Illinois in spring 

 and fall during the migrations, as most of them are supposed to breed 

 from southern Wisconsin northward. That at least a few individuals 



