358 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH SER. 
Type locality—San Bernardino Mountains, San Bernardino 
County, California. 
Synonyms—S ciuropterus californicus; California Flying 
Squirrel. 
Range—Transition zone on the San Bernardino and San 
Jacinto mountains (Rhoads, supra cit.; Grinnell, Univ. Calif. 
PubliiZoole sa. 1908) p38 5" Musi Vera Zool)! 
Family CASTORIDAE 
Castor subauratus Taylor 
Golden Beaver 
Original description—Castor subauratus Taylor, Univ. 
Callie Publs Zool Om Miay 21) 1912s plo7: 
Synonyms—Castor canadensis pacificus; Castor canadensis, 
part. 
Type locality—San Joaquin River at Grayson, Stanislaus 
County, California. 
Range—Larger streams of Sacramento and San Joaquin 
basins, at least from Shasta County south to Stanislaus 
County. 
Castor canadensis frondator Mearns 
Sonora Beaver 
Original description—Castor canadensis frondator Mearns, 
Proc US) Natyitiss) 20) Marcha. NSO7npms02. 0a. 
Type locality—San Pedro River, near Mexican boundary, 
Sonora, Mexico. 
Synonym—Castor canadensis, part. 
Range—Along the Colorado River from the Nevada line 
to the Mexican line. 
Order MANGO MOREE 
Family OCHOTONIDAE 
Ochotona schisticeps (Merriam) 
Gray-headed Cony 
Original description—Lagomys schisticeps Merriam, N. 
Amer. Fauna, 2, October 30, 1889, p. 11. 
Type locality—Donner, Placer County, California. 
