500 



THE DIVING BIRDS — PYGOrODES. 



Linin'T of the wing deep smoky gray. Bill uniibrm black, the extreme tip a little paler ; iris dark 

 brown ; legs and feet pale colored in the dried skin (flesh-color in life ^), the webs and claws dusky. 

 Midsummer jilumafjc: Similar lo the above, but more uniforndy dusky, the rusty bars of the rump, 

 etc. wanting, owing to abrasion of the tips of the feathers. Winter plumage (= B. Wramjeli, 



Summer plumage 



Brandt) : Above, dusky, interrupted by a narrow white band across the upper part of the nape ; 

 interscapulars, feathers of the rump, and upper tail-coverts tipped with plumbeous ; scajtulars 

 chiefly white, especially the inner ones, forming a conspicuous longitudinal patch on each side of 

 the back. Entire lower parts, including the lower half of the lores and the whole side of the head, 

 except the orbital region, pure white, the exterior feathers of the sides and flanks striped with 



Winter plumage. 



plumbeous or dusky grayish. Lining of the wing smoky gray, as in the summer plumage. Young, 

 first ylmaage : Above, nniform blackish (without plumbeous tips to any of the feathers), the 

 occipital band of the winter plumage slightly indicated or interrupted ; scapular patch less distinct 

 than in the winter plumage. Lores almost wholly dusky. Lower parts white nearly everywhere, 

 but more especially on the jugulum, breast, and sides, transversely mottled with fuliginous-dusky. 

 Bill much smaller and weaker than in the adult. 



Total length, about 9.50 to 10.00 inches ; extent, 18.00 ; wing, 5.00 ; culmen, .60-.70 ; tarsus, 

 .70 ; middle toe, without claw, .90-1.00. 



This also is an oceanic and a Pacific species, occurring from the coast of California 

 northward. To what extent this bird is to be found on the opj)Osite coasts of Asia, 



1 According to Audubon (1. c. ) the feet are yellow. 



