24 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



covering the flanks and posterior half of the sides, pure white. " Bill 

 bright vermilion-red, the tip white; irides reddish brown; legs orange- 

 red. Total length 21 inches." (Dresser, B. Eur. pt. xxii.) Wing, 

 10.20 ; culmen, 2.00 ; tarsus, 1.50 ; middle toe, 2.25. 



Adult 9 (57209, U. S. Nat. Mus.; Hungary, W. Schluter).— Crest much 

 less developed than in the male, light hair-brown, this color descending j 

 to the level of the lower border of the eye, and posteriorly continuing in a 1 

 narrow stripe down the nape ; rest of the head and neck very pale ashy, 

 as are also the lower parts in general; jugulum, sides, and flanks light 

 raw-umber brown, the tips of the feathers lighter; anal region and 

 crissum uniform light drab, the latter whitish terminally. Upper parts 

 in general umber-drab (the wings being more brownish than in the J ), 

 darker on the rump ; white patch at base of scapular region wholly ob- 

 solete, and white border to the wing indistinct ; speculum pale ashy, 

 becoming gradually dull white basally, and brownish dusky subter- 

 minally, and with a narrow white terminal margin as in the J . " Eyes 

 hazel ; beak blackish, with a pink tip, a portion of the lower mandible 

 being yellowish pink ; legs and feet pinkish, webs blackish." (Dresser, 

 I c.) Wing, 9.90 ; culmen, 1.90 ; tarsus, 1.50 ; middle toe, 2.20. 



Immature S (61957, U. S. Nat. Mus. ; vicinity of New York City, Feb., 

 1872, G. A. Boardman). — Similar in general appearance to the adult 9 , 

 as described above, but crest much less developed (the tips of the feathers 

 much worn) and decidedly more reddish in color ; sides and under parts 

 of head thickly interspersed with cinnamon-colored feathers (new moult) ; 

 the jugulum, breast, and posterior under parts also mixed with black 

 feathers, indicating the approaching adult livery ; white patch at base 

 of scapular region plainly indicated, and broad white border to anterior 

 portion of the wing very distinct; speculum much as in the 5, lacking 

 the distinct subterminal dusky bar of the adult i . Wing, 9.80 ; culmen, 

 1.80; tarsus, 1.50; middle toe, 2.15. 



^^ Young in doicn (fide Baldamus, Cab. Journ. 1870, 280).— Differs 

 from every other duck in this plumage that I know in having a double 

 olive-gray stripe from the lores, dividing before the eye, and bordering 

 the yellowish-gray eyebrow above and the cheeks and auriculars below 

 upper parts, crown from the base of the bill, nape, back, and wings dull 

 olive-gray, excepting the spot on the shoulder, which, with the rest of 

 the body, is pale yellowish gray ; iris dark brown ; bill reddish brown 

 with the nail white ; feet ash-gray, with a greenish tinge, webs and toes 

 narrowly edged with yellowish white." (Dresser, I. c.) 



