Idaho: Sawtooth Lake, 1. Wyoming: Mammoth Hot Springs, 3; Jackey's Creek, 4 miles southwest of Dubois, 1; Teton Pass, 7200 ft., 2; Salt River Mts., head of Dry Creek, 9200 ft., 1; Medicine Bow Mts., 10 200[**10,200-see Twining NM below] ft., 1; Medicine Bow Creek, 1. Utah: Filmore, 1. Colorado: Loveland, 1; Middle Park, 1; Sangre de Christo Pass, 1; Fort Garland, 1; Platte Canyon, 1; Pueblo, 2; Estes Park, 1; Boulder, 2; Gold Hill, 1; Golden, 7300 ft., 1; Colorado Springs, 5; Querida, Custer County, 1; Salida, Chaffee County, 1; Crested Butte, Gunnison County, 1; Stamford, 1. Texas: Guadalupe Mts., 6800 ft., 1; Davis Mts., 1. New Mexico: Fort Massachusetts, 1; Fort Wingate, 1; Albuquerque, 1; Taos Mts., 8800 ft., 1; Manzano Mts., 4; Magdalena Mts., 7000 ft., 1; Cienequilla, 1; Mt. Capitan, 1; Pecos Baldy, 1; Bear Spring Mts., 1; Shiprock, 1; Corona, 1; Twining, 12,500 ft., 1; Fulton, 1; San Mateo Mts., 9500 ft., 1. Arizona: Fort Whipple, 1; Mt. Graham, 1; San Francisco Mt., 2; Bright Angel Spring, Kaibab Plateau, 1; Canyon Spring, 1; Santa Catalina Mts., 2; Sierra Ancha, 6500 ft., 1. =Penthestes gambeli inyoensis=, new subspecies Inyo Mountain Chickadee _Parus gambeli_, of authors, part. _Penthestes gambeli_, of authors, part. _Penthestes gambeli baileyae_, American Ornithologists' Union Committee (1910, p. 351), part (?). _Type locality._--Panamint Mountains (northern part), 3 miles east of Jackass Spring, 6200 feet altitude, Inyo County, California. _Type_, male adult, no. 28782, Mus. Vert. Zool.; October 7, 1917; collected by J. Grinnell, orig. no. 4588. _Diagnosis._--The palest colored race of the four; sides, flanks and back, in unworn plumage, pervaded with pale buff--the "cartridge buff" of Ridgway (1912, pl. 30). Wear or fading, or both, removes most of this buff tone, so that the resulting effect, in spring and summer birds, is of an ashy tone of coloration, distinctly lighter than in any of the other three subspecies, in same stage. It seems probable that there is a paler tone to the underlying plumage parts and that this becomes revealed by loss of the superficial pigment-bearing portions through the gradual progress of feather abrasion. _Inyoensis_ shows nearly as long a tail as does _gambeli_. Its bill is somewhat smaller. _Measurements._--Average of 10 males: "Wing, 71.1 mm.; tail, 69.3; exposed culmen, 8.1; depth of bill at base, 3.7. For extremes, see accompanying table. _Range._--The higher mountains of eastern California lying east and southeast of Owens Valley, from the vicinity of the Mono Craters and the White Mountains, in Mono County, south to the Panamint Mountains, in Inyo County. _Specimens examined_, 50, from the following localities, all in California: