144 BIEDS. 



white on wing; L. 20; W; 9; T. 8, or less. N. Am. 

 and Europe; chiefly northern and coastwise. 



16. CAMPTOLMMUS, Gray. Pied Ducks. 

 1. C. labradorius, (Gm.) Gray. Labradoe Duck. 

 ^ chiefly black and white; ? plumbeous; L. 24; W. 9. 

 Coast, chiefly northern; scarce. 



17. HISTRIONICUS, Lesson. Hahlbquiis^ Ducks. 

 1. H. torquatus, (L.) Bon. Haelbquin Duck, f, leaden 

 bluish, much varied; speculum violet and purple; ? dark 

 brown, etc. Atlantic Coast, Am. and Europe. 



18. SO MATERIA, Leach. Eidbb Ducks. 



1. S. mollissima, (L.) Leach. Eidbe Duck. $ in 

 breeding dress, white; under parts, rump, quills, and 

 crown patch black; $ reddish brown, streaked; bill with 

 long, club-shaped, frontal processes extending in line 

 with culmen; L. 34; W. 13. Arctic regions; S. to New 

 England in vnnter. [S. dresseri, Sharpe.) 

 ». 3. S. spectabilis, (L.) Leach. King Eidbe. $ chiefly 

 black; front parts, etc., white; frontal processes broad, 

 squarish, out of line of culmen; slightly smaller. Nor- 

 thern regions; S. to N. Y. 



19. (EDEimiA, Fleming. Suef Ducks. 



* Bill not encroaclied upon by frontal feathers ; tail 16-featliered ; 

 no white on wings. {(Edemia.) 



1. (E. americana, Sw. Ameeican Black Scotee. 3 

 entirely black; $ sooty brown, paler below and on throat; 

 L. 18 to 34; W. 10. N. Am., all coasts. 



** Bill broadly encroached upon by frontal feathers; a large 

 white wing patch. (Melanetta.) 



2. (E. fusoa, (L.) Sw. Velvet Scoter. White 



