144 BULLETIN 144, UNITED STATES NATIONAL MUSEUM 



NEVADA: Cottonwood Range, 1 skin (U.S.N.M.) ; Humboldt County, 1 



skin (U. C.) ; Panaca, 1 ale. (U.S.N.M.). 

 NEW MEXICO: Raton Range, 1 skin (U.S.N.M.) ; Cantonment Bergwyn, 



1 ale. (U.S.N.M.) ; Costilla River, 2 skins (U.S.N.M.) ; Santa Clara 



Canyon, 1 skin (U.S.N.M.) ; Santa Fe, 1 ale. (U.S.N.M.) ; Twining, 5 



skins, ineluding type (U.S.N.M.) ; Willis, 2 skins (U.S.N.M.). 

 OREGON: Fremont, 5 skins, 1 skull, approaehing longicrus (U.S.N.M.); 



Paulina Lake, 4 skins (U.S.N.M.) ; Silver Lake, 1 skin (U.S.N.M.) ; 



Ironside, Malheur County, 1 skin (A. M. N. H.). 

 WASHINGTON: Anatone, 4 skins (U.S.N.M.). 

 WYOMING: Afton, 1 skin (U.S.N.M.); Lake Fork, 1 ale. (U.S.N.M.); 



Laramie. 1 skin (U.S.N.M.) ; Otto, 2 skins (A. M. N. H.) ; Rattlesnake 



Mountains, 1 skin (U.S.N.M.). 



Remarks. — The type specimen of Myotis volans interior is a bright 

 ochraceous buffy identical in color with the type of Myotis '■'■ca'pi- 

 taneus " representing the small M. volans volans of Lower California. 

 Others from New Mexico, however, are much redder, ochraceous 

 tawny. Palest of all are skins of adults from the Inyo Mountains 

 of southeastern California and a single skin from 11,000 feet on the 

 east side of Mount Whitney at the southern end of the Sierra Ne- 

 vadas. These are probably the extreme of this pallid dry-country 

 race, the Mount Whitney specimen perhaps a summer immigrant 

 from the deserts below. Specimens from Pasadena, Pasadena 

 County, southward to southern California seem best regarded as 

 mfeWor, as well as the majority of those from the Sierra Nevada, 

 particularly the more pallid individuals from its southern part. The 

 series from the Sierra Nevada is clearly intermediate between the 

 interior race and M. volo/ns longicrus of the coast, but most of them 

 have a distinctly tawny hue, instead of the saturate appearance of 

 the latter, and it is for this reason that we have included them under 

 the form intemor. A small series from Old Fort Tejon, Kern County, 

 Calif., is darker than most specimens of interior^ yet not so dark 

 as M. V. longicrus. In the drier parts of eastern Washington simi- 

 lar dull yellowish-brown individuals are found. Three from Anatone 

 in the extreme southeast corner of the State are clearly interior 

 rather than the saturate smoky form of the coast, while of two from 

 Whatcom County, one is as dark as M. v. longicrus and the other 

 shows an approach to interior in its decidedly redder cast. Eastern 

 Oregon affords a similar series, which, on account of their distinctly 

 paler and reddish to ochraceous tint are placed Avith the latter form, 

 though clearly intermediates. 



In immature specimens the bright tips of the long hairs are few and 

 shorter than in adults, so that the bases of the hairs everywhere show 

 through and darken the general appearance. The pallid coloration 

 of Colorado specimens was noticed by Cary (1911). No. 160595 

 (U.S.N.M.), from Wyoming, lacks the minute p^ on the left-hand 



