62 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



Sciuropterus silus Bangs. 



1896. Sciuropterus silus BANGS, Proc. biol. soc. Washington, 



x, p. 163. December 28, 1896. 



TYPE LOCALITY. Top of Katis Mountain, near White Sul- 

 phur Springs, Greenbrier County, West Virginia. 



Sciuropterus yukonensis Osgood. 



1900. Sciuropterus yukonensis 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. [Mus] volans LINNAEUS, Syst. nat., x ed., i, p. 63. 



1885. Sciuropterus volucella volucella TRUE, Proc. LT. S. nat. 

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



1890. S\_ciuropterus'\ volans 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, December 28, 1896). 



Sciuropterus volans querceti Bangs. 



1896. Sciuropterus volans querceti 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, Svst. nat., x ed., i, p. 58. Type. 

 Castor fiber LINNAEUS. 



* Castor canadensis Kuhl. 1 



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. 



