ORDER ANSERES. 75 
SuscEeNus MARILA. 
Marila marila (LINN&US). Scaup Duck. [148.] 
Anas marila Linnmus, Fauna Suecica, ed. 2, 1761, 39. (‘‘Lapponia.”’) 
RanGE.— Northern part of Northern Hemisphere. In North 
America breeds from the Aleutian Islands, northwestern Alaska, 
Great Slave Lake, and central Keewatin south to southern British 
Columbia and northern North Dakota; has bred casually on Mag- 
dalen Islands and in Ontario and Michigan; winters from Maine 
to Florida and the Bahamas, and from the Aleutian Islands, Nevada, 
Colorado, and Lake Ontario south to southern California, southern 
New Mexico, and southern Texas; in migration rare in central 
Ungava, Newfoundland, and Nova Scotia. 
Marila affinis (Eyron). Lesser Scaup Duck. [149.] 
Fuligula affinis Eyton, Monogr. Anatide, 1838, 157. (North America.) 
RancE.— North America. Breeds from the Yukon Valley, Alaska, 
and Fort Anderson, Mackenzie, south to central British Columbia, 
southern Montana, Colorado (casually), northern Iowa, northern 
Indiana, and western Lake Erie; winters from southern British 
Columbia, Nevada, Colorado, Lake Erie, and New Jersey south to 
the Bahamas, Lesser Antilles, and Panama; rare in migration in 
Newfoundland, New Brunswick, and Nova Scotia; accidental in 
Greenland and Bermuda. 
Marila collaris (DoNovAN). Ring-necked Duck. [150.] 
Anas collaris Donovan, Brit. Birds, VI, 1809, pl. 147. (Lincolnshire, 
England? Found in Leadenhall market, London.) 
Rance.— North America. Breeds from southern British Colum- 
bia to northern California, and from northern Alberta and Lake 
Winnipeg south to North Dakota, northern Iowa, and southern 
Wisconsin; winters from southern British Columbia, New Mexico, 
northern Texas, southern Illinois, and New Jersey south to Porto 
Rico and Guatemala; occurs in migration north to Newfoundland, 
Nova Scotia, and Quebec; recorded from Bermuda and England. 
