138 BIBDS. 



aa. Bill and legs black ; neck black. . . Brahta, 3. 

 *** Lores feathered; tarsus scutellate in front; Ducks. 

 f Bill depressed ; the lamellse simple, bluntish. 

 X Hind toe simple, not bordered by membrane. " Eiver 



Ducks." (AlfATDT^.) 



J. Head crested; tip of bill formed entirely by the nail; 



colors brilliant in 3 Atx, 11. 



Vb. Bill very much widened towards the tip ; speculum 



green. ...... Spatttla, 10. 



hih. Head not crested ; bill not much widened towards tip. 



c. Tail wedge-shaped, at least f length of wing. 



$ of Dafiea, 5. 

 ec. Tail less than half length of wing. 



d. Speculum white; wing coverts chestnut. 



Chaulelasmus, 6. 

 dd. Speculum violet, bordered with black and white. 



Ajstab, 4. 

 ddd. Speculum greenish purple, bordered by black, white 

 and bufl; crown streaked; tail feathers acute. 



? of Dafila, 5. 

 dddd. Speculum green. 



e. Wing coverts mostly white; crown whitish. 



Mareca, 7. 

 ee. Wing coverts sky-blue; head of s plumbeous or 



purplish. . . . QuBKQtJBDDLA, 8. 



eee. Wing coverts plain ashy ; head of male chestnut 

 with green band. . . . Nettion, 9. 



XX Hind toe lobed (bordered by membrane.) " Sea Ducks."- 

 (Pmjsmjmx.) 

 h. Cheeks bristly; colors black and white (or gray.) 



CAMPTOi.a!Mxrs, 16. 



M. Tail pointed, longer than wings (in adult) ; bill black 



and orange Harblda, 15. 



TMi. Tail rounded ; the feathers stiff, narrow, exposed nearly 

 to their bases, the upper coverts being very short. 



Ebismatxiba, 20. 



