Vot. III] GRINNELL—MAMMALS OF CALIFORNIA 3517, 
Range—Transition zone of southern California, from near 
the Mexican boundary northwest to the mountains of Ventura 
County (Mus. Vert. Zool.). 
Family PETAURISTIDAE 
Sciuropterus alpinus stephensi Merriam 
Mendocino Flying Squirrel 
Original description—Sciuropterus oregonensis stephens 
Merriam, Proc. Biol. Soc. Wash., 13, June 13, 1900, p. 151. 
Type locality—Sherwood, Mendocino County, California. 
Synonyms—California Coast Flying Squirrel; Stephens 
Flying Squirrel. 
Range—Transition zone in northwest humid coast belt; but 
one precise locality so far known, as above. 
Sciuropterus alpinus klamathensis Merriam 
Klamath Flying Squirrel 
Original description—S ciuropterus alpinus klamathensis 
Merriam, Proc. Biol. Soc. Wash., 11, July 15, 1897, p. 225. 
Type locality—Transition zone, altitude 4200 feet, Fort 
Klamath, Klamath County, Oregon. 
Synonym—sS ciuropterus volucella hudsonius. 
Range—Transition and Boreal zones of the interior of 
northern California: Warner Mountains, Modoc County, and 
Trinity Mountains, in Siskiyou and Trinity counties (Mus. 
Vert. Zool.) ; Mount Shasta (Merriam, N. Amer. Fauna, 16, 
1899, p. 92). 
Sciuropterus alpinus lascivus Bangs 
Sierra Nevada Flying Squirrel 
Original description—Sciuropterus alpinus lascivus Bangs, 
Proc. New Eng. Zool. Club, 1, July 31, 1899, p. 69. 
Type locality—Tallac, Eldorado County, California. 
Range—Transition zone on central Sierra Nevada. 
Sciuropterus alpinus californicus Rhoads 
San Bernardino Flying Squirrel 
Original description—Sciuropterus alpinus californicus 
Rhoads, Proc. Acad. Nat. Sci. Phila., June, 1897, pp. 323, 324. 
