ANATIDZ — FULIGULINZ: SEA DUCKS. 711 
much greater extension of those on the sides of the bill, which reach to below the nostrils, about 
opposite those on the chin. The general upper outline of the bill nearly straight, and the 
frontal processes narrow, acute, and nearly parallel (see figs. and compare description of next 
subspecies). Adult g: Plumage almost entirely black and white. Top of head glossy blue- 
black, including eyes, and forking behind to receive the white of the hind-head. Occiput more 
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Fie. 495, — Eider Ducks, 3% nat. size. (From Brehm.) 
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or less washed with sea-green. Neck all around, fore breast, most of the back, most of the 
wing-coverts above and below, the curly tertials, and sides of rump, white, on the breast tinged 
with pale creamy-brown. Middle line of rump, upper tail-coverts, and under parts from the 
breast, black or blackish. Length about 24.00; extent 40.00; wing 11.00; tail 4.00; tarsus 
1.75 ; middle toe and claw 3.75; culmen of bill 2.00 or less, from apex of. frontal processes to 
tip 2.60; along gape 2.40. Adult 9 : Sufficiently similar to the & in character of bill, and 
