ANATIN.E — THE DUCKS — FULIX. 



17 



GeXUS FULIX, SUNDEVALL. 



Fidix, SuNDEV. Kong. Vet. Ak. Haud. 1835, 129. (No type designated, but restricted to the group of 



which Anas marila, Linn., is typical, by Professor Baird iu B. N. Am. 1858, 790.) 

 Fidigula, Auct. (nee Stephens, 1824). 



Marila, Bonap. Compt. Rend. XLIII. Sept. 1856, 651. (Not of Reichenbacii, 1852.) 

 Nettarion, Baird, B. N. Am. 1858, 790 (in text), (type, Anas 'inarila, Linn.). 



Char. Bill longer than the tarsus (about as long as the head), very broad and much depressed 

 for the terminal half, the edges nearlj^ parallel or slightly divergent terminally ; lower edge of 

 the maxilla strongly convex, concealing all of the mandible except the basal portion. Colors 



F. marila, male. 



chiefly black and white (the head, neck, and jugulum black, lower parts white) in the adult male 

 the black replaced by brownish in the female. 



This genus, as restricted, embraces three North American and one European species, whose 

 characters are as follows : — 



A. Speculum white, tipped with Ijlack ; sides and flanks plain white, or very minutely undulated 

 with grayish. 



1. F. marila. Occiput not crested ; back and scapulars grayish white in the male, undulated 



with black. Wing, 8.2.5-9.00 inches ;i bill. 1.85-2.20 X .85-1.05 X .70-90; tarsus, 

 1.40-1.60; middle toe, 2.25-2.45. Hah. North America. 



2. F. affinis. Similar to F. marila, but smaller. Wing, 7.60-8.25 inches ; Inll, 1.58-1.90 



X .S0-.95 X .60-.80; tarsus, 1.15-1.50 ; middle toe, 2.00-2.25. Hah. North America. 



^ The average dimensions of the two are as follows : ^ 



F. marila : Wing, 8.59 inches ; culmen, 2.02 ; width of bill, near end, .97, at base, .79 ; tarsus, 1.51 : 

 middle toe, 2.32. (17 specimens.) 



F. affinis: Wing, 7.80 inches ; culmen, 1.75 ; width of bill, near end, .88, at base, .69 ; tarsus, 1.38 ; 

 middle toe. 2.14. (20 specimens.) 

 vol.. II. — ,3 



