ANATID^ — FULIGULIN^ : SEA DUCKS. 



711 



much greater extension of those on the sides of the bill, which reach to below the ifostrils, about 

 o])posite those on the chin. The general upper outhne of the bill nearly straight, and the 

 frontal processes narrow, acute, and nearly parallel (see figs, and compare description of next 

 sul)species). Adult $ : Plumage ahnost entirely black and white. Top of head glossy blue- 

 black, iiichiding eyes, aud forking behind to receive the white of the hind-head. Occiput more 



Fig. 495. —Elder Ducks, -^a nat. size. (From Brehm.) 

 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 : Suflficiently similar to the $ in character of bill, and 



