magnum, and shape of the auditory bullae, indicate relationship with _Z. p. utahensis_ to which they are here referred. Two immature individuals from Strawberry Creek, 20 mi. E Preston, Idaho, considered to be _Z. p. idahoensis_ by Davis (_op. cit._:341), also are here referred to _Z. p. utahensis_. _Specimens examined._--Total, 178, distributed as follows: IDAHO: _Bonnerville County_: _9 mi. SE Irwin, 6400 ft._, 3. _Caribou Co._: Head Crow Creek, Preuss Mts., 7500 ft., 6 (USBS). _Franklin County_: Strawberry Creek, 20 mi. NE Preston, 6700 ft., 2 (MVZ). _Teton County_: 3 mi. SE Victor, 6 (MVZ). UTAH: _Beaver County_: Puffer Lake, 1 (UU). _Daggett County_: junction Deep Creek and Carter Creek, 7900 ft., 2 (UU). _Duchesne Co._: _Currant Creek, Uinta Forest_, 2 (USBS). _Morgan Co._: _exact locality not given_, 1 (UU). _Rich County_: 12 mi. SW Woodruff, 1 (MVZ). _Salt Lake County_: _Lambs Canyon, 2 mi. above Parleys Canyon, 7000 ft._, 1 (UU); _head Lambs Canyon, 9000 ft._, 3 (UU); _Salamander Lake and Lambs Canyon, 9000 ft._, 11 (UU); _"The Firs," Mill Creek Canyon_, 2 (UU); _Brighton, Silver Lake P. O., 8700 ft., Cottonwood Canyon_, 1 (UU); _Brighton, Big Cottonwood Canyon, 8000 ft._, 1 (UU); _1 mi. above Alta_, 4 (UU); Butterfield Canyon, approximately 5 mi. above Butterfield Tunnel, 3 (UU). _Sanpete Co._: _8 mi. E Fairview and 5 mi. S Mammoth R. S., Manti Nat'l Forest, 9000 ft._, 1 (USBS); _Baldy R. S., Manti Nat'l Forest_, 1 (UU); Ephraim, 8850 ft., 1 (USBS). _Summit County_: _Henrys Fork, Uinta Mts., 8000 ft._, 4 (UU); 14 mi. S and 2 mi. E Robertson, 9300 ft., 3. _Uintah County_: 21 mi. W and 15 mi. N Vernal, 10,050 ft., 1. _Utah County_: Payson Lake, 8300 ft., 12 mi. SE Payson, Mt. Nebo, 12 (UU); _1 mi. E Payson Lake, 8300 ft., Mt. Nebo_, 3 (UU). _Wasatch County_: Provo River, 3 mi. N Soapstone R. S., Wasatch Nat'l Forest, 1 (UU). WYOMING: _Lincoln County_: 3 mi. N and 11 mi. E Alpine, 5650 ft., 37. _Teton County_: 1/4 mi. E Moran, 6700 ft., 4; _Bar B. G. Ranch, 6500 ft., 2-1/2 mi. NE Moose_, 11; _Moose, 6225 ft._, 1. _Uinta County_: 2 mi. E Robertson, 7200 ft., 1; _9 mi. S Robertson, 8000 ft._, 21; _9 mi. S and 2-1/2 mi. E Robertson, 8000 ft._, 1; _9-1/2 mi. S and 1 mi. W Robertson, 8600 ft._, 2; _10 mi. S and 1 mi. W Robertson, 8700 ft._, 18; _10-1/2 mi. S and 2 mi. E Robertson, 8900 ft._, 1; _13 mi. S and 1 mi. E Robertson, 9000 ft._, 4; _5 mi. E Lonetree_, 1 (ROM). _Marginal records._--Wyoming: 1/4 mi. E Moran, 6700 ft.; 2 mi. E Robertson, 7200 ft. Utah: junction Deep Creek and Carter Creek, 7900 ft.; Paradise Park, 21 mi. W and 15 mi. N Vernal, 10,500 ft.; Ephraim, 8500 ft.; Puffer Lake; Payson Lake, 8300 ft., 12 mi. SE Payson, Mt. Nebo; Butterfield Canyon, approximately 5 mi. above Butterfield Tunnel. Idaho: Strawberry Creek, 20 mi. NE Preston, 6700 ft.; 3 mi. SW Victor. =Zapus hudsonius= (Zimmerman) (Synonymy under subspecies)