60 PROCEEDINGS : BOSTON SOCIETY NATURAL HISTORY. 



Genus SCIUROPTERUS F. Cuvier. 1 



1825. Sciuropterus F. CUVIER, Dents du mammiferes, p. 255 

 (description, pp. 161-162). Type. Sciurus volans LINNAEUS. 



* Sciuropterus alpinus (Richardson). 



1828. Pteromys alpinus RICHARDSON, Zool. journ., in, p. 519. 

 1885. Sciuropterus volucella hudsonius TRUE, Proo. U. S. 



nat. mus., vn (1884), p. 596. 1885. (Part.) 

 1897. Sciuropterus alpinus RHOADS, Proc. acad. nat. sci. 



Phila., p. 319. June, 1897. 

 TYPE LOCALITY. Rocky Mountains, at the sources of the 



Athabaska and Peace Rivers, Alberta, Canada. 



Sciuropterus alpinus fuliginosus Rhoads. 



1897. Sciuropterus alpinus fuliginosus RHOADS, Proc. acad. 



nat. sci. Phila., p. 321. June, 1897. 

 TYPE LOCALITY. Cascade Mountains, near Martin Station, 



Kittitass County, Washington. 



Sciuropterus alpinus lascivus Bangs. 



1899. Sciuropterus alpinus lascivus BANGS, Proc. New Eng- 

 land zool. club., i, p. 69. July 31, 1900. 

 TYPE LOCALITY. Tallac, El Dorado County, California. 



Sciuropterus alpinus olympicus Elliot. 



1899. /Sciuropterus alpinus olympicus ELLIOT, Field Colum- 

 bian mus. publ., i, p. 225. February 1, 1899. 

 TYPE LOCALITY. Happy Lake, Clallam County, Washington. 



Sciuropterus alpinus kl a math crisis Men-lam. 



1897. Sciuropterus alpinus klamathensis MERRIAM, Proc. biol. 



soc. Washington, xi, p. 225. July 15, 1897. 

 TYPE LOCALITY. Fort Klamath, Klamath County, Oregon. 



Altitude, 4200 feet. 



i Eastern forms revised by Bangs (Proc. biol. soc. Washington, x, pp. 162-166, De- 

 cember 28, 1896), Western by Rhoads (Proc. acad. nat. sci. Phila., 1897, pp. 314-327, June, 

 1897). The species are here necessarily arranged alphabetically. 



