186/.] MR. p. L. SCLATER ON CHILIAN BIRDS. 329 



POLYBORIN^. 



Three species of this group are found in Chili, namely Folyhorus 

 tharus, Milvago chimamjo, and M. megalopterus (Meyen). Of the 

 last of these Messrs. Philippi and Landheck 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 Phalcohcenus montanKS (Lafr. et D'Orh.), which he ima- 

 gined to be the Bolivian form of this species, wliile he has proposed 

 to call the Chilian bird M. crassirosti-is'^ . But if the diflPerences 

 between these two forms are allowed to be specific, we must never- 

 theless adopt for the Chilian bird the name megalopterus of Meyen, 

 the bird figured by Meyen (Nov. Act. xvi. Suppl. p. G4, pi. 7) being 

 undoubtedly a young bird of this form, and being stated by that 

 author himself to be from Chili. 



BuTEONINiE. 



Two species of this group seem to be undoubted natives of Chili, 

 namely Uruhitinga unicincta (Temm.)^and Buteo erythronotiis 

 (King). Whether Aquila braccata of Meyen is really different from 

 the latter we are not able to say at present. Herr von Pelzeln re- 

 gisters the two species as distinct (Verh. zool.-bot. Ges. 1862, 

 p. 142). 



Aquiline. 



Geranoa'etus 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. 



ACCIPITRIN^. 



Accipiter chilensis, lately described by Messrs. Philippi and Land- 

 beck (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. jjileatitsf, from 

 which, however, it is likewise distinct. Messrs. Phihppi and Land- 

 beck have transmitted specimens of this bird in the immature plu- 

 mage to the Norwich Museum. We 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 speci- 

 mens 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). 

 1 List of Accipitres, 1848, p. 72. 



