ORDER ANSERIFORMES. 51 



Subgenus ARISTONETTA Baird. 



Aristonetta Baird, in Baird, Cassin, and Lawrence, Rep. Expl. and 

 Surv. R. R. Pac, IX, 1858, 793. Type, by orig. desig.. Anas valisineria 

 Wilson. 



Njrroca valisineria (Wilson). Canvas-back. [147.] 



Arms valisineria Wilson, Amer. Orn., VIII, 1814, 103 (pi. 70, fig. 5). 

 (United States.) 



Range. — Breeds from Alaska (Fort Yukon) and Great Slave Lake to 

 central Manitoba, central western Nebraska, northern New IVIexico, northern 

 Utah, and western Nevada, occasionally east to southern Minnesota and 

 southern Wisconsin. Winters from southern British Columbia south along 

 the Pacific coast to Mexico, and from northwestern Montana, northern Colo- 

 rado, northeastern Arkansas, southern Illinois, and Chesapeake Bay south to 

 Florida, the Gulf coast of Louisiana, Texas, central Mexico, and rarely 

 Guatemala. Casual or accidental in Bermuda, New Brunswick, and Nova 

 Scotia. 



Subgenus FULIX Sundevall. 



Fulix Sundevall, Kongl. Vetensk. Akad. Handl., 1835 [1836], 129. 

 Type, by subs, desig., Anas marila Linnaeus (Baird, Brewer, and 

 Ridgway, 1884). 



Nyroca marila (Linnaeus). Greater Scaup Duck. [148.] 



Anas Marila Linnaeus, Fauna Suecica, ed. 2, 1761, 39. (in Lapponia = 

 Lapland.) 



Range. — Breeds on the Arctic coasts of Europe and Asia from the Aleutian 

 Islands and the .Arctic coast of Alaska and Canada to the west coast of Hudson 

 Bay and western Ungava, Great Slave Lake, and central Manitoba (recorded 

 as breeding in southeastern Michigan, Minnesota, North Dakota, and north- 

 ern Iowa). Winters on the Pacific coast from the Aleutian Islands to north- 

 ern Lower California, and on the Atlantic coast from southern New England 

 to North Carolina; also on the Gulf coast of Florida, Louisiana, and Texas; oc- 

 casionally north to Maine and the Great Lakes and from Colorado to Nevada, 

 New Mexico, and Arizona; in the Eastern Hemisphere south to the Mediter- 

 ranean, Black, and Caspian seas. Casual in Greenland, eastern Labrador, 

 and Newfoundland. 1 



Nyroca affiais (Eiton). Lesser Scaup Duck. [149.] 



Fuligula affinis Eyton, Monogr. Anatida;, 1838, 157. (North America.) 



Range. — Breeds from southern Alaska (Glacier Bay), the Mackenzie and 

 Anderson River regions, west coast of Hudson Bay, and southeastern Ontario 



1 The North American bird has been separated as N. ni. neardica Stejneger 

 (Bull. U. S. Nat. Mus., No. 29, 1885, 161), 



