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Show 18?6.] NEOTROPICAL ANATID.E. 391 Anas ipicutiri, Vieill. N. D. v. p. 120 (1816), et Enc. Me'th. p. 354 (1823). Querquedula ipicutiri, Hartl. Ind. Az. p. 28 (1847); Gay, Faun Chil. p. 451 ; Ph. & Landb. Cat. Av. Chil. p. 42. Anaspaturi, Spix, Av. Bras. ii. p. 85, t. 109 (Rio S. Francisco). A. notata, Licht. in Mus. Berol. Supra fusca, pileo brunnescente; dorso postico, cauda et tectricibus alarum minoribus nigris; alis fusco-nigris, primariorum mternorum et secundariorum pogoniis externis nitenti-aneo-viridibus, secundariorum internorum apicibus latis niveis, a colore aneo fascia nigra disjunctis ; subtus dilutior, in pectore rubiginoso lavata, gutture albidiore, ventris plumis fusco obsolete transfasciatis; rostro nigricante, pedibus flavis: long, tota 15*5, ala 7, cauda 3*3, tarsi 1*2, rostri a rictu 1*8. Hab. Guiana (Schomb.) ; Rio Brancho (Natt.) ; Rio San Francisco (Spix) ; S. E. Brazil (Max. et Burm); S. Paulo and Mato-grosso (Natt.); Bolivia (Pearce) ; Paraguay (Azara) ; Buenos Ayres (Hudson) ; Parana and Tucuman (Burm.) ; Magellan Straits (Darwin). This Duck seems to be very widely extended in Eastern South America from the north down to the extreme south. Schomburgk found it abundant in the marshy savannas of British Guiana; and Natterer obtained specimens on the Rio Brancho. In S.E. Brazil it is said by Prince Maximilian to be the commonest species of Duck. According to Azara, Q. brasiliensis is much more abundant in Paraguay than in Buenos Ayres. It is usually seen in pairs, but sometimes in flocks of twenty, associating with other Ducks. He adds that it moults in M a y and nests in August. Burmeister says this species is very common on the Parana and in all marshes and lagoons of the northern districts. It is also common at Tucuman. Mr. Darwin obtained specimens from Buenos Ayres in October, and from the Straits of Magellan in February. Gay has inserted this species (like many others) in his list of Chilian birds; but Philippi and Landbeck (Cat. Av. Chil. p. 42) state that so far as they know it does not occur in that Republic. Gay's specimen was probably from Bolivia, whence Salvin has obtained an example. Genus 7. DAFILA. Type. Dafila, Stephens, G. Z. xii. pt. 2, p. 126 (1824).. D. acuta. Phasianurus, Wagler, Isis, 1832, p. 1235 D. acuta. Pcecilonetta, Eyton, Mon. Anat. p. 32 (1838) D. bahamensis. Three Pintails are met with in the Neotropical Region. One of these is the well-known European bird which penetrates in winter into the northern portion of the region ; the others are endemic southern species, one of which is sometimes separated as generically distinct. 1. DAFILA ACUTA. Anas acuta, Linn. S. N. i. p. 202 (1766). Dafila acuta, Baird, B. of N. A m . p. 776 ; Cab. J. fiir Orn. 1857, |