(J8 



DUCKS, OEF.SE AND SWANS OF NORTH AMEItlCA. 



Genus SOMATERIA Leach. 

 Subgenus SOMATERIA. 

 SOHATERIA HOLLISSIMA BOREALIS (Ihrlim). 

 Northern Eider Duck. Sea Duck. 



MiOe : Top of the head, lihu-k, witli a striof of wliitc on tlic inidille of tlii' i-rown : occiput, 

 pale o-i-eeii, the color extending on the sides of the neck; rest of the head, breast, and back, 

 white, faintly tinged witli dull pinkish ou tlie lireast; rest of the under parts, Ijhiek : tail, 

 black; points of divided cuhnen, pointed. 



AVing, 11.2.5; bill (culnien), 2; gape, 2. -50. 



(Keijiale.) 



(JiMle.) 



Fi'iiKih : Gi'neral eoloi', pale rufous brown, mottled, and lianded witli iilack; head, tawny 

 brown, faintly lined and dotted with black; some of the secondaries tii)ped «itli white. 

 "Wing, 11. .50; bill ('culineiiK same as male. 



The Nottheni P^idcr differs from the American Eider Duck in ha\'iiio the 

 IToints of the divided culmen (which extend upward on sith's of the forehead) 

 pointed and not rounded at the ends as in tiiat species. (See cut.) 



