44-6 PATAGONIAN EXPEDITIONS I ZOOLOGY. 



tail-coverts dull olive greyish, with a tendency to slight vermiculation by 

 a darker shade. 



Bill : The upper mandible dusky black ; the lower with dull orange 

 shading. Iris dark hazel-brown. 



Feet and legs orange yellow. 



The adult female differs but slightly from the male in color. In some 

 specimens the brown of the head is not broken continuously by the 

 white of the neck and throat, but the brown crosses the neck just below 

 the chin, dividing the white into two distinct areas on the neck. 



Geographical Range. Central and southern Argentina and Chili ; the 

 Straits of Magellan ; the Rio Negro, and adjacent territory to the south. 

 (There are birds in the Museo de La Plata, collected at various points in 

 this latter region.) 



ANAS CRISTATA Gmelin. 



Crested Duck, Lath. Gen. Syn. III. pt. 2, p. 543 (1785 : Staten Island). 



Anas cristata, Gm. Syst. Nat. I. p. 540 (1788 : ex Lath.) ; Gray, List B. 

 Brit. Mus. Part III. p. 136 (1844 : Hermit Isl., Straits of Magellan, 

 Falkland Isl.) ; id. Gen. B. III. p. 616 (1845) I Des Murs in Gay's 

 Hist. Chil. Zool. I. p. 449 (1847) ; Gould, P. Z. S. 1859, p. 96 (Falk- 

 land Isl.) ; Scl. P. Z. S. 1860, p. 389 (Falkland Isl.) ; Abbott, Ibis, 1861, 

 p. 1 60 (Falkland Isl.) ; Pelz. Reise Novara, Vog. p. 138 (1865 : Chili) ; 

 Scl. P. Z. S. 1867, p. 335 (Chili) ; Phil, and Landb. Cat. Av. Chil. p. 41 

 (1868) ; Scl. & Salv. Ibis, 1870, p. 499 (Tuesday Bay) ; Cunningh. 

 Nat. Hist. Str. Magell. pp. 154, 266 (1871) ; Gray, Handl. B. III. p. 82, 

 no. 10651 (1871); Scl. & Salv. Nomencl. Av. Neotr. p. 129 (1873);? 

 Leyb. Excurs. Pamp. Argent, p. (1873) ; Scl. & Salv. P. Z. S. 1876, p. 

 381 ; Scl. P. Z. S. 1880, p. 519 ; Sharpe, P. Z. S. 1881, p. 13 (Cockle 

 Cove, Feb. : Port Rosario, March) ; Tacz. Orn. Per. III. p. 473 (1886) ; 

 Scl. P. Z. S. 1886, p. 401 (Tarapaca) ; Phil. Ornis, IV. p. 160 (1888 : 

 Pastes Largos); Burm. An. Mus. Nac. Buenos Aires, III. Part X. p. 248 

 (1888) ; Tristr. Cat. Coll. B. p. 49 (1889 : Tilly Bay, Straits of Magel- 

 lan) ; Oust. Miss. Sci. Cap. Horn, Oiseaux, p. 199 (1891); James, 

 New List Chil. B. p. 9 (1892); Salvad. Cat. B. Brit. Mus. XXVII. 

 p. 216 (1895) ; Lane, Ibis, 1897, p. 192 (Sacaya: Sitani : Lake Huasco); 

 Gosse in Fitzgerald Highest Andes, p. 350 (1889 : Horcones Valley) ; 

 Sharpe, Hand-list B. I. p. 217 (1899); Martens, Hamb. Magalh. 



