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Show 1867.] MR. P. L. SCLATER ON CHILIAN BIRDS. 329 P O L Y B O R I N A E. Three species of this group are found in Chili, namely Polyborus tharus, Milvago chimango, and M. megalopterus (Meyen). Of the last of these Messrs. Philippi and Landbeck have transmitted adult and young examples from the Cordillera of Santiago, under the name " Caracara montanus." But according to Pelzeln (Birds of No-vara- Voyage, p. 3) the Chilian Milvago of this section is not the same as Phalcobeenus montanus (Lafr. et D'Orb.), which he imagined to be the Bolivian form of this species, while he has proposed to call the Chilian bird M. crassirostris*. But if the differences between these two forms are allowed to be specific, we must nevertheless adopt for the Chilian bird the name megalopterus of Meyen, the bird figured by Meyen (Nov. Act. xvi. Suppl. p. 64, pl. 7) being undoubtedly a young bird of this form, and being stated by that author himself to be from Chili. BUTEONINAE. Two species of this group seem to be undoubted natives of Chili, namely Urubitinga unicincta (Temm.) and Buteo erythronotus (King). Whether Aquila braccata of Meyen is really different from the latter we are not able to say at present. Herr von Pelzeln registers the two species as distinct (Verh. zool.-bot. Ges. 1862, p. 142). AO.UILINAE. Geranoaetus melanoleucus (Vieill.) is found in the retired woody and mountainous parts of Chili (Bridges, P. Z. S. 1843, p. 108), but has also a wide range over the continent, extending as far north as the vicinity of Bogota. ACCIPITRINAE. Accipiter chilensis, lately described by Messrs. Philippi and Landbeck (Wiegm. Arch. 1864, p. 43), and stated to be the only species of this group known to them in the country (though no less than five have been said to occur there), is, in our opinion, an excellent species, allied to A. cooperi, although readily distinguishable in the adult dress. There are several examples of it in the British Museum, obtained in Chili by Bridges, and the Magellan Straits by Capt. King. Mr. G. R. Gray has registered these specimens as A. pileatusf, from which, however, it is likewise distinct. Messrs. Philippi and Landbeck have transmitted specimens of this bird in the immature plumage to the Norwich Museum. W e hope to be able to give a figure of this species in an early number of ' Exotic Ornithology.' Herr von Pelzeln (Novara Voyage, p. 13), having had only young specimens to judge from, has erroneously reunited this bird to A. cooperi, to which in immaturity it is certainly very like. * Sitz. Akad. Wiss. xliv. p. 9 (1861). t List of Accipitres, 1848, p. 72. |
