172 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Genus PLAGIODONTIA F. Cuvier. 
1836. Plagiodontia F. Cuvier, Ann. sci. nat., ‘2d ser., vi 
p. 347. Type. — Plagiodontia (lediwn F. Cuvier. 
Plagiodontia aedium F. Cuvier. 
1836. Plagiodontia aediurn F. Cuvier, Ann. sci. nat., 2d 
ser., VI, p. 347. 
1885. Plagiodontia aedium True, Proc. IT. S. nat. in us., vii 
(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. — Hgstrix dorsata Lijvnaeus, 
* Erethizon dorsatum (Linnaeus). 
1758. [IIgstrix\ dorsata Lixxaeus, Syst. nat., x ed., i, p. 57. 
1822. E[_rethizo7i\ dorsatum F. Cuvier, Mem. mus. d’ hist, 
nat., Paris, ix, p. 432. 
1885. Eretliizo7i dorsatus dorsatus True, Proc. U. S. nat. 
mus., VII (1884), p. 600. 1885. 
Type LOCALITY.— Eastern Canada.' 
Erethizon dorsatum picinum Bangs. 
1900. Erethizon dorsatus picinus Bangs, Proc. 'New Eng¬ 
land zool. club, II,. p. 37. September 20, 1900. 
Type locality. — Lance au Loup, Strait of Belle Isle, Lab¬ 
rador. 
