292 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH SrER. 
Mustela muricus (Bangs) 
Sierra Least Weasel 
Original description—Putorius (Arctogale) muricus Bangs, 
Proc. New Eng. Zool. Club, 1, July 31, 1899, p. 71. 
Type locality—Echo, Eldorado County, California. 
Synonym—Putorius muricus. 
Range—Known only from the type locality, as above. 
Mustela arizonensis (Mearns) 
Mountain Weasel 
Original description—Putorius arizonensis Mearns, Bull. 
Amer. Mus. Nat. Hist., 3, May, 1891, pp. 234, 235. 
Type locality—San Francisco forest, near Flagstaff, 
Coconino County, Arizona. 
Synonyms—Arizona Weasel; Putorius brasiliensis frenatus. 
Range—Transition and Boreal zones along the Sierra 
Nevada, from Mount Shasta (Merriam, N. Amer. Fauna, 16, 
1899, p. 106) south to Tulare County, and the San Jacinto 
Mountains, Riverside County (Mus. Vert. Zool.). 
Mustela xanthogenys xanthogenys Gray 
California Weasel 
Original description—Mustela sxanthogenys Gray, Ann. 
and Mae. Natielist Il 133: dake. 
Type locality—Southern California, probably near San 
Diego (fide Merriam, N. Amer. Fauna, 11, 1896, p. 25). 
Synonyms—Y ellow-cheeked Weasel; Putorius xanthogenys. 
Range—Lower and Upper Sonoran zones west of the-desert 
divides, from the Mexican line north through the San Diegan 
district, and west-central California east of the northern 
humid coast belt, at least to the head of the Sacramento 
Valley. 
Mustela xanthogenys munda (Bangs) 
Redwood Weasel 
Original description—Putorius xanthogenys mundus Bangs, 
Proc, New Ene, Zool) Club) 1) une Oe 18090" par sola 7 
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