BRITISH COLUMBIA: Atlin, 7 (6 CAS; 1 PM); _Deep Creek, 60 mi. above Telegraph Creek_, 1 (USBS); _Sawmill Lake, near Telegraph Creek_, 6 (MVZ); junction 4 mi. N Telegraph Creek, 1 (ROM); McDame Post, Dease River, 1 (USBS); _Stikine River, at Glenora_, 28 (MVZ); _Kispiox Valley, 23 mi. N Hazelton_, 3 (MVZ); _9-mi. Mtn., 4500 ft., NE Hazelton_, 1 (MVZ); Hazelton, 959 ft., 20 (MVZ); Bear River, 7 mi. N Bear Lake, 1 (USBS); Charlie Lake, Fort St. John, 1 (PM); _Moose River_, 2 (PM); Tupper Creek, 7 (PM); _Babine_, 2 (USBS); _Port Simpson_, 3 (USBS); 12 mi. N Summit Lake, Alaska Highway, 3300 ft., 3 (NMC); _Giscome_, 1 (USBS); _Ootsa Lake_, 3 (PM); Inverness, mouth Skeena River, 1 (USBS); W end Eutsuk Lake, 1 (PM); Wapiti, head of Middle Branches River, 1 (USBS); Hagensborg, 15 (NMC); _Stuie, Cariboo Mtn., 4700 ft._, 2 (NMC); Rainbow Mts., Mt. Brilliant, 5000 ft., 10 (NMC); N 7 Wistaria P. O., 13 (NMC); _Mt. McLean, Lillooet_, 1 (PM); Mt. Robson P. O., Mt. Robson Park, 1 (MVZ); _Indianpoint Lake, 15 mi. NE Barkerville_, 42 (29 MVZ; 18 PM); Cottonwood P. O., 2 (MVZ); Mt. Revelstoke, 3400 ft., 6 (PM); Glacier, 1 (ROM). YUKON: Rose River, mile 95 on Canol Road, 1 (NMC). _Marginal records._--Yukon: Rose River, mile 95 on Canol Road, British Columbia; McDame Post, Dease River; Charlie Lake, Fort St. John; Tupper Creek; Wapiti, head of Middle Branches River; Mt. Robson P. O., Mt. Robson Park; Mt. Revelstoke, 3400 ft.; Cottonwood P. O.; Rainbow Mts., Mt. Brilliant, 5000 ft.; Inverness, mouth Skeena River. Alaska: Taku River. British Columbia: Atlin. =Zapus princeps utahensis= Hall _Zapus princeps utahensis_ Hall, Occ. papers, Mus. Zool., Univ. Michigan, 296:3, November 2, 1934. _Jaculus Hudsonius_, J. A. Allen, Bull. Essex Inst., 6:65, April, 1874 (part--the part concerning Great Salt Lake Valley, Utah). _Zapus princeps princeps_, Wolfe, Jour. Mamm., 91:154, May 9, 1928. _Zapus princeps idahoensis_, Davis, Recent Mammals of Idaho, Caxton Printers, Caldwell, Idaho, p. 341, April 5, 1939 (part--the part from southeast Idaho). _Type._--Female, adult, skin and skull; No. 59153, Museum of Zoology, University of Michigan; Beaver Creek, 19 mi. S Manila, Daggett County, Utah; obtained on July 16, 1928, by A. and R. D. Svihla, original No. 176. _Range._--Southeastern Idaho and extreme western Wyoming (Teton, Snake, and Uinta Mt's) southward through Uinta, Wasatch, Oquirrh, and Beaver Mt's of Utah. See fig. 46. Zonal range: Transition, Canadian, and Hudsonian.