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Show 1876.] NEOTROPICAL ANATID.E. 381 plumis axillaribus albis ; rostro obscuro, pedibus flavis : long. tota 21*0, alee 11*0, cauda 4*8, tarsi 1*9, rostri a rictu 2*3. Fern, mari similis, sed coforibus minus claris. Hab. Magellan Straits (King); Southern and Central Chili (Phil. $• Landb.). This Duck is very remarkable for its conspicuous white patch on each side of the face and pure white throat and neck, as well as the large richly coloured alar speculum. So far as we yet know, it is exclusively a western species. According to Philippi and Landbeck it is common from the Straits of Magellan as lar north as Valdivia, but is rare in the central provinces of Chili. 4. ANAS CRISTATA. Crested Duck, Lath. Syn. iii. p. 543, unde Anas cristata, Gm. S. N. i. p. 540 (1788) (Statenland) ; Gay, Faun. Chil. p. 449 (1848); Gould, P. Z. S. 1859, p. 96 (Falklands); Scl. P. Z. S. 1860, p. 389 (Falklands), 1867, p. 335 (Chili); Abbott, Ibis, 1861, p. 160 (Falklands); Ph. & Landb. Cat. Av. Chil. p. 41 ; Scl. & Salv. P. Z. S. 1867, p. 990 (Salinas, Peru); Ibis, 1870, p. 499 (Tuesday Bay), et Nomencl. p. 129 ; Schl. Mus. des P.-B. Anseres, p. 39. Anas specularoides, King, Zool. Journ. iv. p. 98 (1838). Anas pgrrhogaster, Meyen, Nov. Act. xvi. Suppl. p. 119, t. xxv. (Maipu, Chili). Dafila pgrrhogaster, Eyton, Mon. Anat. p. 113 (1838). Supra terreno-fusca, colore pallidiore in dorso superiore variegata ; pileo fttscescenti-nigro in cristam elongatam desinente ; speculo atari lato cupreo-viridi, parte distali nigra, fascia externa alba terminata ; subtus fusca, magis rufescens et maculis indistinctis in pectore notata; crisso et subalaribus fere nigris, harum plaga media alba; rostri maxilla nigra, mandibula flava, pedibus nigris: long, tota 20'0, ala 10*5, cauda 5*0, rostri a rictu 2*1, tarsi 1*8, dig. med. cum ungue 2*4. Hab. Falklands (Abbott) ; Magellan Straits (Cunn.) ; Chili (Ph. c}- Landb.); S. Peru (Whitely). This species has a wider range than the last, extending northwards into Southern Peru, where Mr. Whitely obtained specimens in 1867 at Salinas, a salt lake on the Cordillera, above Arequipa, at an altitude of 14,000 feet. In Chili, Philippi and Landbeck tell us, it inhabits the high cordilleras in summer, but descends during winter to the plains, and is found along the coast down to the Magellan Straits, where Dr. Cunningham obtained specimens. The Crested Duck is common everywhere on the Falkland islands, mostly frequenting salt water, though occasionally seen near freshwater pools. Old birds are always found in pairs. They live upon shellfish. They retire inland to breed ; and the duck lays five eggs, in a nest covered with down. The eggs are laid from the beginning of October to the beginning of November. The only near ally of this Duck in the Neotropical region is the preceding species, from which it may be at once distinguished by the |