276 The Mammals of Colorado 
Above, dull, rather pale brown; under parts whitish gray; ears 
blackish; membranes brown. Skull resembles that of M. evotis 
so closely that it is practically impossible to distinguish between 
the two except that that of M. subulatus is very slightly smaller. 
Distribution. — North America east of the Rocky Mountains 
(Miller /. c). The only Colorado records at present seem to be 
near La Junta (the type locality), and Colorado Springs. 
Myotis evotis (Grk., eu, ear + otis, ear, well-eared). 
Long- Eared Bat. 
Vespertilio evotis H. Allen, Monogr: Bats N. Am., p. 48 (1864). 
Type locality. — Not stated and no type designated in original 
description. Miller says Monterey, Cal. (one of the locahties 
given by Allen), may be selected as the type locality. 
Measurements. — Total length, 3.5 ; tail vert., 1.7 ; hind foot, 0.32 ; 
ear from notch (dried skin), 0.65; forearm, 1.5. Length of skull, 
0.55 ; width, 0.4. 
Description. — (From specimen taken in Montezuma County, 
Colorado, June 20, 1907): Color above, light yellowish brown; 
below, paler and grayer; ears and membranes blackish. Skull 
larger than any other Colorado Myotis except longicrus, but is 
much slenderer than that, rostrum narrower, forehead very greatly 
sloping; brain-case noticeably narrower in front than behind, and 
flatter. The large ears distinguish it from any other of the species 
of Myotis found in Colorado. 
Distribution. — Austral and Transition Zones from the Pacific 
coast to the eastern edge of the Rocky Mountains; south to Vera 
Cruz (Miller <:.). He records specimens from Loveland, and Cary 
has taken it in western Montezuma County; Coventry, Montrose 
County, 6,800 feet, C. H. Smith. 
Genus LASIONYCTERIS (Grk. lasios, shaggy, hairy, nukteros, 
nocturnal). 
Lasionycteris Peters, Montasber. k. preuss. Akad. Wissensch., 
Berlin, p. 648 (1865). Type, Vespertilio noctivagans LeConte. 
Revision, Miller, A^. A. Fauna, No. 13 (1897). 
Skull flattened, rostrum very broad in proportion to brain-case. 
Strongly concave on each side back of the nasal aperture; dorsal 
profile of skull nearly straight and sloping gradually from external 
nares to occiput, which is scarcely angular, and always without 
sagittal crest. Ears short, nearly as broad as long; when laid 
forward reaching barely to nostril ; basal lobe very large ; tragus 
short, straight, and bluntly rounded at tip; width much more than 
