_Distribution._--The Cascade Mountains. Known from Skykomish (W.W.D.) and southward to Mount Adams (Trout Lake, Hall, 1945: 85). =Mustela erminea murica= (Bangs) _Putorius (Arctogale) muricus_ Bangs, Proc. New England Zoöl. Club, 1:71, July 31, 1899. _Mustela muricus_ Miller, U. S. Nat. Mus. Bull., 79:96, December 31, 1912. _Mustela cicognanii lepta_ Taylor and Shaw, Occ. Pap. Chas. R. Conner Mus., no. 2:11, December, 1929. _Mustela cicognanii muricus_ Bailey, N. Amer. Fauna, 55:292, August 29, 1936. _Mustela erminea murica_ Hall, Jour. Mamm., 26:77, February 27, 1945. _Type._--Obtained at Echo, El Dorado County, California, by W. W. Price and E. M. Nutting on July 15, 1897; type in Museum of Comparative Zoölogy. _Racial characters._--Similar to _invicta_ but smaller and paler. _Measurements._--A young female from Stay-a-while Spring, Columbia County, measured: total length 201; length of tail 46; hind foot 24; ear 14; weight 45.8. A female from Butte Creek, Columbia County, measured: 185; 50; 26. A male from Baker Creek, White Pine County, Nevada, measured: 220; 56; 26; 14.5; weight 57.7. _Distribution._--The Blue Mountains of southeastern Washington. _Remarks._--Two specimens available from the Blue Mountains are darker than typical _murica_. =Mustela frenata= Lichtenstein Long-tailed Weasel _Description._--Male long-tailed weasels measure about 16 inches in total length of which 6 inches is the length of the tail. Females are smaller, measuring about 14 inches in length with a tail 5 inches long. The body is long and exceedingly thin. The legs are short and stout with rather large feet and strong, curved claws. The tail is well-furred, not tapered, but lacks the bushy appearance of the tail of the fisher. The head is low, wide at the base and abruptly tapering to the muzzle. The ears are erect, low and rounded. The fur is short but dense and rather soft. In summer the color of the head, back, sides and outside of the legs is brown. The throat, chest, underside of body and insides of legs are yellow or orange. In winter they may be entirely white, save for the black tip of the tail. The tail is slightly darker than the back in summer and possesses a long black tip. Long-tailed weasels do not hibernate even in the coldest parts of Washington. They are active both by day and by night, apparently doing their hunting at the time of day or night when they can most easily obtain food. In the Cascade Mountains where diurnal mammals such as squirrels, chipmunks and pikas are common, weasels are not uncommonly seen by day. In the lowlands of western Washington, where they feed on more nocturnal mammals, they are seldom seen.