=California.= _Siskiyou County_: head of Rush Creek, 6400 ft., 1; Castle Lake, 5434 ft., 1. _Tehama County_: 2 mi. W Black Butte, 6800 ft., 1. _Placer County_: ridge W of Tahoe Pines, Lake Tahoe, 1; Blackwood Creek, 6250 ft., near Tahoe Pines, 1. _El Dorado County_: Fallen Leaf Lake, 6500 ft., 1[33]; Echo, 1[75]. _Tuolumne County_: Ten Lakes, 9200 ft., Yosemite Park, 1. _Mariposa County_: Vogelsang Lake, 10350 ft., Yosemite Park, 1. _Mono County_: Mammoth, 1[59]. =Colorado.= _Rio Blanco County_: Marvine, 1. _Boulder County_: Camp Albion, 10600 ft., 1[60]; Boulder, 1[91]. _Denver County_: Denver, 1[57]. _Park County_: Jefferson, 1[57]. _Gunnison County_: near Placita in Gunnison County, 1[26]; Crested Butte, 9000 ft., 3 (1[91], 2[19]). _El Paso County_: Turkey Creek, SW Colorado Springs, 6000 ft., 1[19]. _Chaffee County_: Arbourville, 1[91]; Hancock, 1. _Montrose County_: Coventry, 6800 ft., 1[19]. _San Juan County_: Silverton, 1[91]; in San Juan County above timberline, 1[87]. =Idaho.= _Bannock County_: West Fork of Rapid Creek, 9-1/2 mi. E Pocatello, 1. =Montana.= _Meagher County_: Camas Creek, Big Belt Mts., 4 mi. S Ft. Logan, 1[91]. _Beaverhead County_: Donovan, 1[91]. _County_ in question: Yellowstone Park, 1[75]. =Nevada.= _Humboldt County_: Alder Creek, 6000 ft., Pine Forest Mts., 1. _Ormsby County_: 1/2 mi. S Marlette Lake, 8150 ft., 1. _Nye County_: South Twin River, Toyabe Mts., 1[91]. _White Pine County_: Baker Creek (8500 ft., 8675 ft., 11100 ft.), 3. =New Mexico.= _Taos County_: Twining, 10700 ft., 1[91]. _Sandoval County_: 9 mi. E Cuba, 9000 ft., 1. _Santa Fe County_: Saddle S of Santa Fe Baldy, 11000 ft., Santa Fe Range, 1[1]. =Oregon.= _Wasco County_: Mill Creek, 20 mi. W Warmsprings, 1[91]. _Klamath County_: Fort Klamath, 1[91]. =South Dakota.= _Pennington County_: 4 mi. SE Hill City, 5300 ft, 2[76]; Pfander's Ranch, 3 mi. SSE Hill City, 5300 ft., 1[76]; Palmer Gulch, 3 mi. SE Hill City, 5300 ft., 1[76]; Spring Creek, 2 mi. W Oreville, 5500 ft., 1[76]. _Custer County_: 1/2 mi. E Sylvan Lake, 6250 ft., 1[76]. =Washington.= _Columbia County_: Butte Creek, 1; Stayawhile Spring, 5150 ft., 1: =Wyoming.= _Crook County_: 5 mi. NW Sundance, 5900 ft., 1[93]. _Teton County_: Whetstone Creek, 2[76]; 1/4 mi. E Moran, 6700 ft., 1[93]. _Sublette County_: 1/2 mi. NE Pinedale, 7500 ft., 1[93]. _Albany County_: 30 mi. N and 10 mi. E Laramie, 6560 ft, 1[93]; 26 mi. N and 4-1/2 mi. E Laramie, 6960 ft., 1[93]. _Carbon County_: 8 mi. N and 19-1/2 mi. E Savery, 8800 ft., 2[93]. =Mustela erminea? angustidens= (Brown) Plates 7, 12, 13 and 14 _Putorius cicognanii angustidens_ Brown, Mem. Amer. Mus. Nat. Hist., 9 (pt 4):181, pl. 17, 1908: