74 CHECK-LIST OF NORTH AMERICAN BIRDS. 
GENUS MARILA OKEN. 
Marila Oxesn, Isis, I, 1817, 1183. Type, by tautonymy, Anas marila 
LINN 2X US. 
Suspcenus NYROCA FLemina. 
Nyroca Fiemine, Philos. Zool., II, 1822, 260. Type, by tautonymy, 
Anas nyroca GULDENSTADT. 
Marila americina (Eyton). Redhead. [146.] 
Fuligula americana Eyton, Monogr. Anatide, 1838, 155. (North Amer- 
ica.) 
RaNncGE.— North America. Breeds from southern British Colum- 
bia, central Alberta, central Saskatchewan, and southwestern Kee- 
watin south to southern California, Utah, southern South Dakota, 
southern Minnesota, and southern Wisconsin; winters from southern 
British Columbia, Utah, New Mexico, Kansas, Illinois, Maryland, 
Delaware, and Massachusetts south to southern Lower California, 
central Mexico, and Florida; accidental in Jamaica; in migration 
casual in Alaska and regularly on the Atlantic coast north to south- 
ern Labrador. 
Suspcenus ARISTONETTA Barrp. 
Aristonetta Batrp, Rep. Expl. & Surv. R. R. Pac., [X, 1858, 793. Type, 
by orig. desig., Anas valisineria WILSON. 
Marila valisinéria (WitsoNn). Canvas-back. [147.] 
Anas valisineria Witson, Amer. Orn., VIII, 1814, 103, pl. 70, fig. 5. 
(Eastern United States.) 
Rance.—— North America. Breeds from central British Columbia, 
Fort Yukon, Great Slave Lake, and southwestern Keewatin south 
to Oregon, northern Nevada, Colorado (rarely), Nebraska, and 
southern Minnesota; winters from southern British Columbia, Nevada, 
Colorado, Illinois, Pennsylvania, and western New York south to 
central Mexico (Jalisco) and the Gulf coast; in winter formerly abun- 
dant, now less so, in Maryland, Virginia, and North Carolina; occa- 
sional south to Florida, and casual in the West Indies, Bermuda, 
and Guatemala; in migration north rarely to New Brunswick and 
Nova Scotia. 
