62 PROCEEDINGS : BOSTON SOCIETY NATURAL HISTORY. 



Sciuropterus silus Bangs. 



1896. /Sciuropte)-/is silus Bangs, Proc. biol. soc. Washington, 



X, I). 163. December 28, 1896. 

 Type LOCALITY. — Top of Katis Mountain, near White Sul- 

 phur Springs, Greenbrier County, West Virginia. 



Sciuropterus yukonensis Osgood. 



19U0. IScinroptenis yukoiiensis Osgood, North Amer. fauna, 

 no. 19, p. 25. October 6, 1900. 



Type locality. — Camp Davidson, Yukon River, near Alaska- 

 Canada boundary, Yukon, Canada. 



* Sciuropterus volans (Linnaeus). 



1758. \_Mi(s] rnla/is Lixnaeus, Syst. nat., x ed., i, p. 63. 



1885. Sciuropterus voluceMa ooliicella True, Proc. U. S. nat. 

 mus., vii (1884), p. 596. 1885. (Part.) 



1890. ,S[_ciuropterus'\ vohins Jordan, Manual of the vertebrate 

 animals of the northern United States, 5th ed., p. 321. 



Type locality. — Virginia (see Bangs, Proc. biol. soc. Wash- 

 ington, X, p. 165, Decemlier 28, 1896). 



Sciuropterus volans querceti Bangs. 



1896. Sciuropterus oola/ts (juerceti Bangs, Proc. biol. soc. 



Washington, x, p. 166. December 28, 1896. 

 Type locality. — Citronelle, Citrus County, Florida. 



Family CASTORIDAE. 



Genus CASTOR Linnaeus. 



1758. Castor Linnaeus, Syst. nat., x ed., i, p. 58. Type. — 

 Castor fJjer Linnaeus. 



* Castor canadensis Kulil.i 



1820. Castor canadensis Kuhl, Beitriige z. Zoologie, p. 64. 



1 Reviewed by Rhoads in Trans. Amer. philos. soc, n. s., xix, pp . 417-439, Septem- 

 ber, 1898. 



