Lutra canadensis pacifica [Allen], Bull. Amer. Mus. Nat. Hist., 10: 460, November 10, 1898.
Type.—Obtained at Lake Keechelus, Kittitas County, Washington (altitude 3,000, rather than 8,000 feet as stated in original citation); type in Academy of Natural Sciences of Philadelphia.
Measurements.—An adult male from the Lower Calawah River, near Forks, Clallam County, measured (skinned carcass): total length 1205; length of tail 490; weight (entire) 23 pounds. A male from Puget Island, Wahkiakum County, measured (skinned carcass): total length 1250; length of tail 490. A female from Satsop, Grays Harbor County, measured (skinned carcass): total length 1205; length of tail 440. A female from Calawah River near Forks, Clallam County, measured: total length 1062; length of tail 430; hind foot 120; ear 23; weight 14-3/4 pounds.
Distribution.—Watercourses throughout the state, scarcer east of the Cascades; recorded at Forks (V. B. S.) in the northwest, Puget Island (V. B. S.) in the southwest, Colville ([Taylor] and [Shaw], 1929: 12) in the northeast, and Touchet ([Taylor] and [Shaw], 1929: 12) in the southeast.
Lutra canadensis vancouverensis [Goldman]
Lutra vancouverensis [Goldman], Proc. Biol. Soc. Washington, 48: 186, November 15, 1935.
Type.—Obtained at Quatsino, Vancouver Island, British Columbia, by H. O. Berg in 1905; type in United States National Museum.
Racial characters.—No adults, referred to this race from Washington, have been examined. Said to have broader skull than pacifica.
Measurements.—The only available specimen, a young female from Black Rock, San Juan County, measured: total length 792; length of tail 247; hind foot 103; ear 22.
Distribution.—The San Juan Islands of northern Puget Sound and adjacent marine waters.