SCAUP DUCK. 163 



gray; nail, black. Iris, yellow. Legs and feet, plumbeous. 

 Total length, about 19 inches; wing, 8^; culmen, 2; tarsus, i^. 

 Adult Female. — Forehead, and sides of bill at base, white. 

 Rest of head, neck, and breast, snuff brown. Upper parts, 

 dusky brown; tip of feathers, lighter. Back and scapulars, ver- 

 miculated slightly with white. Wings, purplish brown, with 

 white speculum. Primaries, with the tips and outer webs of first 

 two, blackish brown, remainder, pinkish buff, or whitish brown, 

 the latter showing like a patch when wing is closed. Flanks, 

 brown, vermiculated with white. Belly, white. Anal regions 

 and under tail coverts, dark brown, inclined to an olive shade ; 

 feathers, tipped with white. Tail, dusky brown, lighter than the 

 rump. Iris, bill, legs, and feet, colored as in the male. Total 

 length, about ig inches; wing, 8^; culmen, if; tarsus, 1-3%. 

 There is very little if any difference in the average size of the 

 sexes of this species. 



