156 BULLETIN 144, UNITED STATES NATIONAL MUSEUM 



Type. — Adult male (in alcohol), No. 72219 United States National 

 Museum (Biological Survey collection), collected at Massett, Graham 

 Island, Queen Charlotte Islands, British Columbia, in 1895, by 

 J. H. Keen. 



Distribution. — Humid area of the Pacific coast from the extreme 

 south of the Alaskan archipelago, along the coastal areas of British 

 Columbia, Washington, Oregon, and northwestern California, to 

 the vicinity of San Francisco Bay. (See map 11, p. 149.) 



Diagnosis. — Similar to the typical race of Myotis calif amicus but 

 color darker. 



Color. — General color above nearly "argus brown" of Ridgway 

 (1912); below, similar but slightly paler, about "Sudan brown." 

 Ears, wings and membranes blackish. Area about the eye, upper 

 lip, and chin covered with shorter stiff dark blackish-brown hairs, 

 but their color not in very noticeable contrast. Basal part of the 

 fur everywhere deep " plumbeous black." 



Measurements. — For measurements see tables, pages 161 and 163. 



Specimens examined. — Total number 92, from the following lo- 

 calities : 



ALASKA: Howkan, Long Island, 2 skins (U. C). 



BRITISH COLUMBIA: Comox, 1 skin (U.S.N.M.) ; Massett, Queen Char- 

 lotte Islands, 18 ale. including type (U.S.N.M.), 2 ale. (B. M.) ; Port 

 Moody, 1 skin (U.S.N.M.) ; Skidegate, Queen Charlotte Islands, 3 skins 

 (U.S.N.M.) ; Sumas, 1 skin (P. M.). 



CALIFORNIA: Contra Costa County, Walnut Creek, 3 skins (U. C.) ; 

 Mendocino County, Cahto, 1 ale. (U.S.N.M.) ; Lagunitas, 1 skin (U.S.N.M.) ; 

 Willits, 1 skin (U. C.) ; Mount Sanhedrin, 5 skins (A. N. S. P.) ; San 

 Francisco County, 1 skin (U. C.) ; San Mateo County, Menlo Park, 1 skin 

 (U. C), 1 ale. (U.S.N.M.) ; Sonoma County, Guerneville, 2 skins (U. C). 



OREGON: Brownsboro, 1 skin (U.S.N.M.) ; Corvallis, 1 skin (U. C.) ; Look- 

 ingglass, 1 skin, not typical (U.S.N.M.) ; Marmot, 1 skin (U.S.N.M.) ; 

 McKenzie Bridge, 1 skin (U.S.N.M.) ; Philomath, 2 skins (U.S.N.M.) ; 

 Prospect, 1 skin, not typical (U. C.) ; Reston, 1 skin, nearly typical 

 (U.S.N.M.) ; Tillamook, 1 skin (A. M. N. H.), 2 skins (A. Walker). 



WASHINGTON: Ashford, 1 skin (U.S.N.M.) ; Bartholomew, 7 skins (S. H. 

 Lyman) ; Blue Creek, Stevens County, 1 ale. (U.S.N.M.) ; Carson, 2 skins 

 (U.S.N.M.) ; Castle Rock, 1 skin (U.S.N.M.) ; Chelan, 1 ale. (U.S.N.M.) ; 

 Colville, 1 ale. (U.S.N.M.) ; Fort Steilacoom, 1 skin (B. M.), 2 skins, 1 ale. 

 (U.S.N.M.) ; Godman Springs, 6 skins (S. H. Lyman) ; Hompeg Falls, 

 1 skin (S. H. Lyman) ; Hoodsport, 2 skins (U.S.N.M.) ; Lake Cushman 

 (Mason County), 3 ale. (U. M.) ; Mount Ranier, 1 skin (U.S.N.M.) ; 

 Prescott, 1 skin (U. C.) ; Puget Sound, 2 ale. (U.S.N.M.) ; Tenino, 1 ale. 

 (U.S.N.M.) ; White Salmon, 1 skin (U.S.N.M.). 



Remarks. — The northwest coast race is not very strongly differ- 

 entiated from true Myotis calif ornicus, and many specimens are 

 found that are difficult to refer unhesitatingly to one or the other. 

 In general, however, M. c. caurinu^ is darker, with a smoky-brown 

 appearance due to the more uniformly dark tips to the hairs, whereas 



