SEA DUCKS. 233 



orown streaked with black, and the sides waved with black, a 

 white, black bordered mark in front of the wing ; wing crossed by 

 two black bars ; smaller than merganser. Distribution same 

 as last. 



Mergus cacullatus—y,mn. Hooded Merganser. Saw-billed Diver. 



Male with a thick erect crest. Black including two crescents 

 in front of wing, and bar across speculum ; under parts, centre of 

 crest, speculum, stripes on tertials, white ; sides chestnut, black- 

 barred. Length eighteen inches. Female, head and neck brown, 

 chin whitish ; back and sides dark brown ; white on wing tip. 

 North America at large. • 



