NOETH AMEBIC AN LAND MAMMALS. 339 



Family PETAURISTID^. 



Genus SCIUROPTERUS F. Cuvier.i 



1825. Sciuropterus F. Cuvier, Dents des mammiferes, p. 255 

 (description, pp. 161-162). Type, Sciurus volans Linn^us = 

 Pteromys russicus Tiedemann. 



Subgenus Glaucomys Thomas. 



1908. Glaucomys Thomas, Ann. and Mag, Nat. Hist., ser. 8, 

 vol. 1, p. 5. January, 1908. Type, IIus volans Linn^us. 



*Sciuropterus alpinus alpinus (Richardson). 



1828. Pteromys alpinus Richardson, Zool. Journ., vol. 3, p. 519. 

 1897. Sciuropterus alpinus Rhoads, Proc. Acad. Nat. Sci. 



Philadelphia, p. 319. June, 1897. 

 Type Locality. — Rocky Mountains, at the sources of the 



Athabasca and Peace Rivers [probably Smoky River branch], 



Alberta, Canada. 



*Sciuropterus alpinus bangsi Rhoads. 



1897. Sciuropterus alpinus hangsi Rhoads, Proc. Acad. Nat. 



Sci. Philadelphia, p. 321. June, 1897. 

 Type Locality. — Idaho Count}^, Idaho. 



*Sciuropterus alpinus californicus Rhoads. 



1897. Sciuropterus alpinus californicus Rhoads, Proc. Acad. 



Nat. Sci. Philadelphia, p. 323. June, 1897. 

 Type Locality. — San Bernardino Mountains, California. 



♦Sciuropterus alpinus fuliginosus Rhoads. 



1897. Sciuropterus alpinus fuliginosus Rhoads, Proc. Acad. 



Nat. Sci. Philadelphia, p. 321. June, 1897. 

 Type Locality. — Cascade Mountains, near Martin Station, 

 Kittitas County, Washington, 



t*Sciuropterus alpinus klamathensis Merriam. 



1897. Sciuropterus alpinus Idamathensis Merriam, Proc. Biol, 



Soc. Washington, vol. 11, p. 225. July 15, 1897. 

 Type Locality. — Fort Klamath, Klamath County, Oregon. 

 Altitude, 4,200 feet. 



*Sciuropterus alpinus lascivus Bangs, 



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

 land Zool. Club., vol. 1, p. 69. July 31, 1899. 

 Type Locality. — TaUac, El Dorado County, California. 



1 Eastern forms revised by Bangs (Proc. Biol. Soc. Washington, vol. 10, pp. 162-166, December 28, 1S96), 

 Western by Rhoads (Proc. Acad. Nat. Sci. Philadelphia, 1897, pp. 314-327, June, 1897). The species are 

 here necessarily arranged alphabetically. 



