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Show 398 MESSRS. SCLATER AND SALVIN ON [Apr. 4, Subfamily IV. FULIGULINAE. The Sea-ducks are essentially arctic in their distribution. One peculiar form only (Micropterus) occurs on the coast of Antarctic America. A second form (Metopiana), though belonging to this group, seems to be only met with on fresh water. Genus 1. METOPIANA. Type. Metopiana, Bp. C. R. xliii. p. 146 (1856) M. peposaca. Some authors have been inclined to associate this peculiar Duck with the Anatina? ; but though it is, we believe, strictly an inhabitant of fresh water, and has not the lobated hind toe of the typical buli-guiinee, it possesses their peculiarity in the structure of the trachea, as mentioned by Burmeister (La-Plata Reise, ii. p. 518), and as recently described and figured by Garrod (P. Z. S. 1875, p. 154). METOPIANA PEPOSACA. Pato negrizco ala blanca, Az. Apunt. no. 430 (Paraguay and Buenos Ayres), unde Anas peposaca, Vieill. N. D. v. p. 132 (1816), et Enc^ Meth. p. 357 (1823) ; Hartl. Ind. Az. p. 27; Burm. La Plata-Reise, n. p. 518, J. fiir Orn. 1860, p. 227 (Parana). Fuligula peposaca, Schl. Mus. des P.-B. Anseres, p. 31. Anas metopius, Poppig, Fror. Notiz. no. 529, p. 9 (1829). Fuligula metopias, Gay, Faun. Chil. p. 456 (1848); Hart!. Naum. 1853, p. 217; Cassin, Gilliss's Exp. ii. p. 204, t. xxvn. (1856) Chili; Scl. P.Z.S. (1867), 335; Reich. Nat. t. cclxxxv. f. 2350; Phil. & Landb. Cat. Av. Chil. p. 43. „,«.„, Metopiana peposaca, Bp. C. R. xliii. p. 146 (1856) ; Scl. & Salv. P Z S 1868, p. 146 (Buenos Ayres), et Nom. Av. Neotr. p. 130; Scl. P. Z. S. 1870, p. 666, t. 37; Garrod, P. Z. S. 1875, p. 154. Anas albipennis, Licht. MS. Nigra, in dorso minutissime albo irrorata, cervice postica capite superiore toto nitore purpureo indutis; secundariis albis, nigro terminatis et tectricibus nigris obtectis, album efficientibus ; primariis grisescenti-albis, horum externis in pogonio exteriore et omnium apicibus nigris; toto griseo et albo minutissime vermiculato; crisso albo; rostro rosaceo, ad basin tumido; pedibus flavis: long, tota 19*0, ala 9*4, caudee 28, tarsi 1*7, rostri a rictu 2*3. Fem. supra brunnea, campterio et speculo atari albis; subtus pectore et hypochondriis rufescenti-brunneis, rostro obscuro, pedibus corneis (Descr. exempl. ex Monte Video). Hab. Paraguay (Azara) ; Buenos Ayres (Hudson) ; Monte Video Johnston in Mus. S.-G.) ; Parana (Burm.) ; Chili (Phil, et Landb.). This beautiful Duck was first obtained by Azara, who, however, gives no details respecting it; but Burmeister tells us it is very common on the Parana; and Mr. Hudson obtained specimens near Buenos Ayres. In the central part of Chili, Philippi and Landbeck state that it is common, but rare in the southern provinces. |
