282 
The Mammals of Colorado 
Gray specimens are yellowish gray on the back and buffy on the 
belly. 
Cranial and dental characters as for genus. 
Distribution. — The Red Bat is found throughout eastern North 
America from Canada to Florida and Texas and westwards to 
Colorado. It has only one record from the State, at Greeley, by 
Beardsley. 
Nycteris cinereus. Hoary Bat 
Vespertilio linereus Palisot de Beauvois, Catal. Peak's Altcs., 
Phila,, p. 14 (1796). (Obvious misprint for cinereus.) 
Lasiurus cinereus Warren, Mamm. of Colo., p. 268 (1906). 
Type locality. — Philadelphia, Pennsylvania. 
Measurements. — Total length, 5.3 ; tail vert., 2.25 ; hind foot, 0.4; 
foreann, 2.0 ; length of skull, 0.65 ; width, 0.5. 
Description. — (From specimen taken at Delavan, Wisconsin, 
July 6, 190 1): Yellowish brown on head; umber brown on back 
and interfemoral membrane, hairs tipped with silvery white, 
sometimes nearly concealing the dark tint underneath ; under parts 
paler brown, with whitish tipped hairs on belly ; membranes blackish. 
Skull similar to that of A^. borealis, but very much larger, in 
proportion to the difference in size between the two species. 
The minute upper premolar is proportionally smaller than in 
A^. borealis. The combination of large size, long tail, and hoary 
color at once distinguishes this from all other Colorado bats. 
Distribution. — The Hoary Bat ranges throughout the northern 
portion of America from Lat. 55° southwards. In Colorado it has 
been met with in Larimer County (Miller) ; Grand Junction (Brad- 
bury) ; Boulder (Rohwer, Bergtold); Salida (Frey). 
Genus CORYNORHINUS (Grk. korune, a club + rhis, nose) 
Corynorhinus H. Allen, Proc. Acad. Nat. Sci. Phila., p. 173 (1865). 
Type, Plecotus macrotis LeConte. 
Revision, Miller, N. A. Fauna, No. 13 (1897). 
Ears very large, much longer than head, close together and joined 
across the forehead; region between eye and nostril occupied by a 
prominent thickened ridge which terminates in a conspicuous 
club-shaped enlargement. Skull slender and highly arched; the 
rostral portion relatively smaller than in any other North 
American genus of VespertilionidiF. Dentition, i. f ; c. ^; pm. |; 
m. f X 2 = 36. 
Found in the warmer parts of North America from southern 
