\ 



41. HETEROXEITA. 325 



41. HETERONETTA. „ 



^ . . ^ ^yP^- 



Heteronetta, Salvad. Atti Soc. Ital. So. Nat. viii.p. 574 



( I860) H. atricapilla. 



Ranye. Confined to the southern part of South America. 



1. Heteronetta atricapilla. 



Pato cabeza negra, Azara, Apunt. iii. p. 447, n. 438 (I8O0). 

 Canard a tete noire, Azara, Voy. {Sonn. ed.) iv. p. 347 (1809) ; Wied, 



Beitr. iv. p. 932(1832). 

 Anas melanocephala, Vieill. (nee Gm.) N. D. v. p. 163 (1816) (ex 



Azara) ; id. Enc. Metk. i. p. 354 (1823) ; G. R. Gr. Gen. B. iii. 



p. 616, n. 18 (1845) ; Hartl. Lid. Azar. Apunt. p. 28, n. 438 (1847) ; 



£p. Compt. Rend, xliii. p. 649, n. 75 (1856) ; Cass. U.S. Astron. 



Rip. ii. p. 202, pi. XXV. (1856) ; Burm. Syst. Ueb. Thier. Bras. 



iii. p. 4:39 (note) (1856); Pelz. Meise Novara, Vny. p. 138 (Chili) 



(1865) ; Sclat. P. Z. S. 1867, p. 335 (Chili) ; Rhil ^- Landb. Cat. 



Av. Chil. p. 42 (1868); Pelz. Orn. Bras. pp. 320 (note), 459 



(1870) ; Gieb. Thes. Orn. 1. p. 356 (1872) ; Burm. P. Z. S. 1872, 



p. 370 ; Sclat. ^- Salv. Nomencl. Av. Neotrop. p. 129 (1873) ; 



Ihirnf. Ibvt, 1878, p. 64 (Buenos Ayres). 

 Anas atricapilla, Merrem, in Ersch u. Grub. Enc. sect, i, vol. xxxv. 



p. 26 (1841). 

 Anas nigriceps, Licht. in Mus. Berol. ; id. Nomencl. Av. p. 101 



(Montevideo) (1854). 

 Heteronetta melanocephala, Salvad. Atti Soc. Ital. Sc. Nat. viii. 



p. 574 (1865) ; id. J. f. 0. 1870, p. 67 ; G. R. Gr. Hand-list, iii. 



p. 83, n. 10655 (1871)'; Sclat. v^- Salv. P. Z. S. 1876, p. 382; Sclat. 



P. Z. S. 1880, p. 520 ; id. Argent. Orn. ii. p. 130 (1889) ; Holland, 



Ibis,\m\, p. 19 (Argentina), 1892, p. 200; Berkel. James, New 



List Chil. B. p. 9, n. 149 (1892). 

 Fuligula melanocephala, Schleg. Mus. P.-B., Anseres, p. 32 (1860). 

 Nyroca melanocephala, Eyt. Syn. Anat. p. 118 (Chili) (1869). 

 Fuligula nigroceps, " Vieill." Eyt. I. c. in the synonymy. 



Adidt. Head and upper part of the neck black ; chin white ; 

 back or upper parts blackish brown, minutely vermiculated with 

 pale rufous ; below dirty whitish, but the base of the feathers 

 dusky brown; sides, flanks, and under tail-coverts rufous brown, 

 freckled with blackish ; no wing-speculum, the tips of the greater 

 coverts white, a white band at the tip of the secondaries ; also the 

 shorter primaries edged with white at the tip ; primaries and tail- 

 feathers blackish ; under wing-coverts, except the greater which 

 are grey, and axillaries white : " bill blackish, with a basal spot on 

 each side flesh-colour ; feet homy brown " (Sclater). Total length 

 about 14'0 inches, wing 7, tail 2*3, culmen 1*75, tarsus 1'12. 



Female. " Similar, but the head like the back, cheeks brown, 

 freckled with black, and throat and superciliary stripe whitish " 

 (Sclater) : " upper mandible dark horn, side base with a tinge of 

 yellowish red ; legs and feet pale slate, webs darker ; irides wood- 

 brown " (Duniford). 



