No. 27. 

 Somateria dresseri. 



Adult male. Chiefly black and white as shown in picture, 

 the black having a brownish cast here and there, and the white 

 tinged more or less upon the breast with buff yellow ; black of 

 head glossed with purplish blue and divided behind by white ; 

 on hinder part of head and along the lower edge of the black 



No. 27. Adult Male. 



marking a wash of sea green. Bill extending back peculiarly 

 upon the forehead, this extension (in life) of a yielding, leathery 

 character, divided or forked behind into two broad branches, or 

 lobes, with roundish ends, these lobes sweeping to right and left 

 upon sides of forehead ; measurements (taken from a single speci- 



