_Mustela erminea arctica_ Ognev, The mammals of U. S. S. R. and adjacent countries, 3:31, 1935. _Specimens examined._--Four from _Alaska_: N side Salcha River, 600 ft., 25 mi. S and 20 mi. E Fairbanks. _Remarks._--One ermine was caught in a rat trap; the others were taken within 50 yards of the trapped animal by attracting them with squeaking calls to within shooting range. One of the weasels approached to within ten feet of Alcorn, while he was making the mentioned call. Mustela erminea richardsonii Bonaparte Ermine _Mustela richardsonii_ Bonaparte, Charlesworth's Mag. Nat. Hist., 2:38, January, 1838. (Type from Fort Franklin, at western end of Great Bear Lake, Mackenzie district, Northwest Territories, Canada.) _Mustela erminea richardsonii_ Hall, Jour. Mamm., 26:180, July 19, 1945. _Specimens examined._--One from _Yukon Territory_: McIntyre Creek, 2250 ft., 3 mi. NW Whitehorse. Mustela erminea alascensis (Merriam) Ermine _Putorius richardsonii alascensis_ Merriam, N. Amer. Fauna, 11:12, June 30, 1896. (Type from Juneau, Alaska.) _Mustela erminea alascensis_ Hall, Jour. Mamm., 26:180, July 19, 1945. _Specimens examined._--One from _Alaska_: E side Chilkat River, 100 ft., 9 mi. W and 4 mi. N Haines. Mustela vison energumenos (Bangs) Mink _Putorius vison energumenos_ Bangs, Proc. Boston Soc. Nat. Hist., 27:5, March, 1896. (Type from Sumas, British Columbia, Canada.) _Mustela vison energumenos_ Miller, North Amer. Land Mamm. 1911, p. 101, December 31, 1912. _Specimen examined._--One (broken and unsexed skull) from _Yukon Territory_: Champagne, N side Dezadeash River. _Remarks._--While studying moose at Medicine Lake, near Circle Hot Springs, Alaska, on August 9, 1947, Alcorn observed some mink concerning which he records the following: "After waiting about an hour a large mink was seen traveling northward on land at the edge of the lake. It continued and went out of sight. I waited about two minutes and then started a series of loud squeaks. To our surprise we soon saw what we judged was the same mink. In company with this mink were five others.... These mink were much interested in the squeaking noise and some came within 10 feet of me. They stayed on land most of the time but some of them made short swims a few feet out into the lake. One had a white chin, another had a white spot on its chest. This group may have been an adult female with her young." Martes pennanti columbiana Goldman Fisher _Martes pennanti columbiana_ Goldman, Proc. Biol. Soc. Washington, 48:176, November 15, 1935. (Type from Stuart Lake, near headwaters of Fraser River, British Columbia, Canada.) _Specimens examined._--Total 2, as follows: _British Columbia_: 14 mi. N Fort Halkett, W side Smith River, 1; N side Liard River, Fort Halkett, 1. Martes americana actuosa (Osgood) Marten