172 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



Genus PLAG-IODONTIA F. Cuvier. 



1836. Plagiodontia F. CUVIER, Ann. sci. nat., 2d ser., vi 

 p. 347. Type. Plagiodontia aedium F. CUVIER. 



* Plagiodontia aedium F. Cuvier. 



1836. Plagiodontia aedium F. 'CuviER, Ann. sci. nat., 2d 



ser., vi, p. 347. 

 1885. Plagiodontia aedium TRUE, Proc. U. S. nat. mus., vn 



(1884), p. 600. 1885. 

 TYPE LOCALITY. San Domingo. 



Family ERETHIZONTIDAE. 



Subfamily ERETHIZONTINAE. 



Genus ERETHIZON F. Cuvier. 



1822. Erethizon F. CUVIER, Mem. mus. d' hist, nat., Paris, ix, 

 p. 426. Type. Hystrix dorsata LINNAEUS. 



"Erethizon dorsatum (Linnaeus). 



1758. \_Hystrix\ dorsata LINNAEUS, Syst. nat., x ed., i, p. 57. 

 1822. E\rethizon\ dorsatum F. CUVIER, Mem. mus. d' hist. 



nat., Paris, ix, p. 432. 

 1885. Erethizon dorsatus dorsatus TRUE, Proc. U. S. nat. 



mus., vn (1884), p. 600. 1885. 

 TYPE LOCALITY. Eastern Canada. 



Erethizon dorsatum picinum Bangs. 



1900. Erethizon dorsatus picinus BANGS, Proc. New Eng- 

 land zool. club, n, p. 37. September 20, 1900. 



TYPE LOCALITY. Lance au Loup, Strait of Belle Isle, Lab- 

 rador. 



