Racial characters.—Similar to streatori but smaller, especially females.
Measurements.—Twelve males and 6 females average, respectively: total length 243, 196; length of tail 65, 52; hind foot 31, 23.4 ([Hall], 1945: 81).
Distribution.—The Olympic Peninsula, extending southeastward to Olympia.
Mustela erminea streatori ([Merriam])
Putorius streatori [Merriam], N. Amer. Fauna, 11:13, June 30. 1896.
Mustela streatori streatori [Miller], U. S. Nat. Mus. Bull., 79:96, December 31, 1912.
Mustela cicognanii streatori [Taylor] and [Shaw], Occ. Pap. Chas. R. Conner Mus., no. 2:11, December, 1929.
Mustela erminea streatori [Hall], Jour. Mamm., 26:76, February 23, 1945.
Type.—Obtained at Mount Vernon, Skagit County, Washington, by D. R. Lucky on February 29, 1896; type in United States National Museum.