326 ANATID^. 



Hah. Eio Grande do Sul ( Wied) ; Uruguay, Argentina, and 

 Chili. 



a. 5 ad. sk. Alvear, Buenos Ayres, Sept. H. Durnford, Esq. 



b,c. (S 2 ^^- s^- Mendoza, Argentine Republic Purchased. 



(R a Heed), 



d, e. (S 2 fid. sk. Mendoza, Feb. ( Weisshaupt). Salvin-Godman Coll. 



f. 5 ad.sk. Mendoza, Feb. H. J.EIwes,Esq.[P.l. 



>. S ad. St. Chili. E. Wilson, Esq. [P.]. 



h. 5 ad. St. Chili. Purchased. 



i: k. S $ ad. sk. Santiacro, Chili {Leybold). Salvin-Godman Coll. 



/, 7n. (S 2 ad. sk. Eio Pilmaiquen, ChiU, Feb. H. Berkeley James, 



Esq. [P.]. 



Subfamily VIII. FULIGULIN^. 



Key to the Genera, 



a. Primaries not uniform dark brown, or 

 blackish, but partly -whitish, with the tip 

 brown ; the first three or four primaries 

 brown also on the outer web j bill rather 

 long, broad, and flat. 

 «'. Indentations of the upper mandible 

 prominent ; head of the male fully 



crested 42. Netta, p. 327. 



h'. Indentations of the upper mandible not 

 prominent. 

 b". Bill gibbous at the base; outline of 

 loral feathering straight, and inclined 



backwards 43. Metopiana, p. 332. 



c". Bill smooth, not gibbous at the base. 



c'". Bill not distinctly wider near the 



end than at the base, neither very 



broad or short , . 44. Nyeoca, p. 334. 



d' ". Bill somewhat wider near the end 

 than at the base, rather broad and 

 short, and much more rounded at 

 the tip than in Nyroca ; head in 



adult males glossy black 45. Fuligula, p. 354. 



b. Primaries uniform dark brown, or blackish. 



c'. Central tail-feathers narrow, short and 



cm'led up ; biU very strong ; wings very 



short, often useless for flight 46. Tachyebes, p. 373. 



d' . Central tail-feathers not curled up. 

 d". No stiff feathers on the head of the 

 adult males. 

 d'" . General plumage of the males not 

 black. 

 <Z*. Head fully crested ; bill strong 

 and thick, 

 d'. Tail moderate, the featliers 



somewhat roimded at the tip j . 



