138 BIRDS. 



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

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

 f Bill depressed ; the lamellae simple, bluntish. 

 \ Hind toe simple, not bordered by membrane. " River 



Ducks." (ANATIN.E.) 



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

 colors brilliant in $ ...... Are, 11. 



&6. Bill very much widened towards the tip ; speculum 

 green ....... SPATULA, 10. 



66&. Head not crested ; bill not much widened towards tip. 



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



$ of DAFILA, 5. 

 ec. Tail less than half length of wing. 



d. Speculum white ; wing coverts chestnut. 



CHAULELASMTJS, 6. 

 dd. Speculum violet, bordered with black and white. 



ANAS, 4. 



ddd. Speculum greenish purple, bordered by black, Avliite 

 and bufl; crown streaked; tail leathers acute. 



? of DAFILA, 5. 

 dddd. Speculum green. 



e. Wing coverts mostly while; crown whitish. 



MA.RECA, 7. 



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



purplish. . . . QUERQUEDCLA, 8. 



eee. Wing coverts plain ashy ; head of male chestnut 



with green band. . . . NETTION, 9. 



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



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



CAMPTOL^EMUS, 16. 



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

 and orange ...... HARELDA, 15. 



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

 to their bases, the upper coverts being" very short. 



ERISMATUKA, 20. 



