This subspecies is remarkably free from injury to the frontal sinuses such as result from the presence of parasites. In 98 adults from Oregon, California, Nevada, and Colorado, no malformation was noted. Only 1 of the 26 specimens from Washington was malformed and it was an intergrade with _washingtoni_. The single adult from New Mexico was diseased, as were 3 of the 6 from British Columbia, 1 of the 20 from Idaho, and 1 of the 7 from Utah. _Specimens examined._--Total number, 568, arranged alphabetically by provinces and states and from north to south by counties in each state. Unless otherwise indicated specimens are in the collection of the United States National Museum. =Arizona.= _Apache County_: 15 mi. E Luka Chu Kai Navajo School, 8000 ft., 2. =British Columbia.= Monte Cr., 20 mi. E Kamloops, 1[21]; Sicamous, 2; Okanagan, 18 (7[2], 6[85], 1[75], 1[86]); Monashee Pass, 1[31]; Swan Lake, near Okanagan Landing, 1[22]; Okanagan Landing, 11 (2[74], 3[31], 3[86], 3[22]); Vernon, 1[74]; Hope-Princeton Summit, 5600 ft., 1[77]; Hope, 1[20]; Similkameen, 1[77]; Osoyoos-Bridesville Summit, 1[77]; Anarchist Mt., Osoyoos, 1[31]; Myer's Creek, 1[77]; Rossland, Mt. Glory, 7000 ft, 1[77]; Cascade, 1[77]; Nelson, 1. =California.= _Siskiyou County_: Hornbrook, 1; Tule Lake Refuge, 5[74]; Upper Mud Creek, 6700 ft., Mt. Shasta, 3; Mt. Shasta, 1. _Modoc County_: Goose Lake, 1[20]; Joseph Creek, 1[74]; 5280 ft., Parker Creek, near Alturas, 1[74]; Warner Mts., near Alturas, 1[8]; 5 mi. NW Eagle Peak, 7000 ft., 2[74]; Shields Creek, 5000 ft., 1[74]; Jess Valley, 1[8]. _Shasta County_: Cassel, 1. _Lassen County_: 3 mi. W Eagle Lake, 5800 ft., 1[74]; 4 mi. S Eagle Lake, 6000 ft., 2[74]; Mill Creek, 5000 ft., S base Mt. Lassen, 1; 6 mi. SW Calneva, 1. _Tehama County_: Dale's, 600 ft., on Paines Creek, 1[74]. _Plumas County_: Kelly's, 2 mi. S Willow Lake, 5200 ft., 3[74]; Quincy, 4[68]; Beckwith, Sierra Valley, 1. _Butte County_: Jonesville, 1[74]. _Sierra_ _County_: Little Truckee River, 6500 ft., 3 mi. N Independence Lake, 2[42]. _Nevada County_: Independence Lake, 1[74]. _Placer County_: Donner, 3; 2 mi. W Soda Springs Station, 6500 ft., 1[74]; Blue Canyon, 5000 ft., 2 (1[74]); 4 mi. S Tahoe City, 1[74]. _Eldorado County_: 5 mi. S Tallac, 6300 ft., 1; Gilmore Lake, Mt. Tallac, 2[74]; Mt. Tallac, 1[68]; Phillips, 1[59]. _Alpine County_: 8000 ft., Hope Valley, 1; 8000 ft., Silver Creek, 1. _Tuolumne County_: Strawberry, 5200 ft., 1[74]; 9300 ft., Ten Lakes, Yosemite Park, 1[74]; Tuolumne Meadows, 8600 ft., Yosemite Park, 1[74]; Tuolumne Meadows (Soda Springs), 1; Tuolumne Meadows, 8500 ft., Yosemite Park, 1[74]; Sequoia, 1. _Mariposa County_: Chinquapin, 6256 ft., 2[74]; Merced Grove Big Trees, 5400 ft., 1[74]; Wawona, 1; no locality more definite than county, 1.