96 



key to the water birds of florida, 

 Subgenus FULVIGULA Stephens. 



(Male.) 



(Female.) 



AYTHYA MARILA NEARCTICA Shy/i. 

 American Scaup Duck. 



Adult iiialf : Head and neck and upper breast black .showing greenish rejections: back 

 grayish white dehcately hned with fine wavy lines of black, giving it a grayish appearance ; 

 speculum white ; under parts white, the lower belly showing grayish tinge. 



Length, 19; Wing, 8.50 ; Tarsus, 1.50: Bill. 2. 



Adult female : Patch at the base of the bill white or grayish white, rest of the head and 

 neck, breast and upper back brownish ; belly white : speculum white. 



Length, 17.75; Wing, 8.25 ; Tarsus, 1.30; Bill, 1.60. 



Species ranges throughout North America, hreeding nortli of the United 

 States. It ranges in winter south to the Bahama Ishmds, and on the Athm- 

 tic coast south to Florida, aUhough it is not nearly as ahundant in Southern 

 waters as A. in. ajfinis, to which it is very closely allied. There are, ap- 



