No. aa. 

 Lophodytes cucullatus. 



Adult male. Bill nearly black, shorter than in preceding 

 mergansers, and differing slightly in other respects, yet, never- 

 theless, a " saw-bill." Crest black in front, and white behind 

 with black bordering. Head, neck, and much of upper plumage 



VT^W^^ 



No. 22. Adult Male. 



black, with some brown, and occasional greenish reflections ; 

 loose black feathers striped with white, growing from elbow 

 region, and seeming (while wings are closed) to belong rather to 

 the plumage of the lower back ; wing-mark, or speculum, white, 



