344 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Sei. 



Family ERETHIZONTIDAE 



Erethizon epixanthum epixanthum Brandt 



Yellow-haired Porcupine 



Original description — "Erethizon epixanthus Brandt, Mem. 

 Acad. St. Petersburg, 1835, p. 390, pis. 1, 9." 



Type locality — "California (or Unalaska)." 



Synonym — Erethizon dorsatus epixanthus. 



Range — High Transition and Boreal zones along the Sierra 

 Nevada, from Mount Shasta (Merriam, N. Amer. Fauna, 16, 

 1899, p. 98) to the vicinity of Mount Whitney (Mas. Vert. 

 Zool.). 



Family APLODONTIIDAE 



Aplodontia californica (Peters) 



Sierra Mountain Beaver 



Original description — Haplodon leporinus var. calif ornicns 

 Peters, Monats. K. Akad. Wiss. Berlin, 1864, pp. '177-179. 



Type locality — The Sierra of California. 



Synonym — Aplodontia major Merriam, Ann. New York 

 Acad. Sci., 3, May, 1886, p. 316 (type from Sierra Nevada, 

 in Placer County, California) ; Haplodontia rufa californica; 

 California Sewellel ; California Mountain Beaver. 



Range — High Transition and Boreal zones on the central 

 Sierra Nevada, Mount Shasta, and the Trinity and Siskiyou 

 mountains (Mus. Vert. Zool; Stephens, Calif. Mammals, 1906, 

 p. 94). 



Aplodontia phaea IMerriam 



Point Reyes Mountain Beaver 



Original description — Aplodontia phaea Merriam, Proc. 

 Biol. Soc. Wash., 13, January 31, 1899, p. 20. 



Type locality — Point Reyes, Marin County, California. 



Synonyms — Haplodontia phaea; Dark Sewellel; f Haplodon 

 rufiis. 



Range — Transition and Boreal zones in the humid north- 

 west coast belt, south as far as Lagunitas, Marin Coimty (Mus. 

 Vert. Zool). 



