AVES AN ATI DyG. 483 



Pttligiila albipennis, Reichcnb. Syn. Av. Natatorcs, pi. CCLXXXV fig. 



2 35 O^So); Bibra, Denkschr. Ak. Wien, V. p. 132 (1853: Chili); 



Felz. Reisc Novara, Vog. p. 139 (1865: Chili). 

 Metopiana peposaca, Bonap. C. R. XLIII. p. 649 (1856) ; Scl. &Salv. P. Z. 



S. 1868, p. 146 (Conchilas) ; Scl. P. Z. S. 1870, p. 666, pi. XXXVII ; 



Gray, Handl. B. III. p. 87, no. 10695 ('871); Burm. P. Z. S. 1872, p. 



368 (Patagonia: Buenos Aires: Parana); Garrod, P. Z. S. 1873, pp. 



467, 639; Scl. & Salv. Nomencl. Av. Neotr. p. 130 (1873) ; Salv. Ibis, 



1874, p. 319 ; Garrod, P. Z. S. 1875, pp. 154, 156 ; Scl. & Salv. P. Z. 



S. 1876, p. 398; Durnf. Ibis, 1876, p. 163, 1877, p. 192 (Buenos 



Aires, common in winter), 1878, p. 65; Scl. P. Z. S. 1880, p. 524; 



White, P. Z. S. 1882, p. 625; Barrows, Auk, V. p. 274 (1884) ; Berl. 



J. f. O. 1887, p. 124 ; Scl. & Huds. Argent. Orn. II. p. 137 (1889) ; 



Graham Kerr, Ibis, 1890, p. 358; Holland, t. c. p. 425; Frenzel, J. f. 



0. 1891, p. 125 (C6rdoba); Holland, Ibis, 1892, pp. 206, 208, 210 

 (Estancia Espartilla, common resident, breeds Sept. to Nov.) ; James, 

 New List Chil. B. p. 10 (1892) ; Aplin. Ibis, 1894, p. 201 (Uruguay) ; 

 Salvad. Cat. B. Brit Mus. XXVII. p. 332 (1895); Schalow, Zool. 

 Jahrb. Suppl. IV. p. 674 (1898 : Concepcion) ; Sharpe, Hand-List B. 



1. p. 222 (1899) ; Carbajal, La Patagonia, Part II. p. 282 (1900). 

 Fuligula peposaca, Schl. Mus. Pays Bas. VI. Anseres, p. 31 (1866) ; Scl. P. 



Z. S. 1867, pp. 335, 340. 

 Metopias peposaca, Heine & Reichen. Nomencl. Mus. Hein. p. 347 (1890). 



GENERAL DESCRIPTION. 



Size. Adult male, 8698 P. U. O. C., Ensenada, Argentina, March, 

 1895. Total length about 23 inches. 



Wing, 10. 



Culmen, 2.6. 



Tail, 3.2. 



Tarsus, 1.7. 



The female averages about the same size as the male, but is different in 

 color, though the pattern of coloration is the same. 



Color. (Male cited.) General color. Above velvety black. Below 

 gray. 



Head : Immaculate velvety black, with a purple brown gloss. 



Neck : Black like the head, except a small triangular spot of white on the 

 ch n just at the beginning of the feathered area. 



