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Show 132 MESSRS. SCLATER AND SALVIN ON THE ASTURINAE. [Feb. 11, Mexiana (Wallace); Eastern Peru (Bartlett et Tschudi); New Granada, Bogota (Mus. S.-G.); Western Ecuador (Fraser). The first and, indeed, only author who has appreciated the distinction between the present species and its Brazilian representative is von Pelzeln, who, in his ' Ornithologie Brasiliens,' considers the latter the true Astur magnirostris, and calls the present bird Astur macrorhynchus from Natterer's M S . Of this being the case we are enabled to speak with some confidence, as one of Natterer's marked specimens from San Carlos on the Rio Negro, in the collection of Salvin and Godman, is undoubtedly referable to this species. But Gmelin's Falco magnirostris is based entirely upon Buffon's Epervier a gros bee de Cayenne (Pl. Enl. 464). This figure, leaving the locality out of the question, clearly represents the northern species, which must therefore retain the name Asturina magnirostris. Comparing a considerable series of specimens of these two allies together, we cannot but fully agree to von Pelzeln's separation of them. The present bird may be readily distinguished from the next species by the cinereous colour below, slight indications of rufescent tinge being only seen upon the darker bands of the belly and thighs. In A. nattereri the throat is darker cinereous and distinctly striped with white longitudinally; the breast is rich rufous in very adult birds, almost without cross markings; the belly is very pale fulvous or almost cream-colour, with numerous cross bands of deep ferruginous ; the thighs are covered by minute cross bands of the same colour. In A. magnirostris the thighs are pure white, cross-banded with pale cinereous with merely a slight rufescent tinge. 4. ASTURINA NATTERERI. Falco magnirostris, Max. Beitr. iii. p. 102; Temm. Pl. Col. 86 (avis jr.). Astur magnirostris, Pelz. Orn. Bras. p. 6. Nisus magnirostris, Burm. Syst. Ueb. ii. p. 76. Falco magnirostris, Spix, Av. Bras. i. p. 18 (partim). Supra brunnescenti-cinerea; subtus gula cinerea albo striata: pectore ferrugineo : ventre toto cum tibiis ferrugineo-rufis pallido fulvo transfasciatis : cauda nigricante, cinereo trivittata et terminata. Hab. South-eastern Brazil (Max. et Burmeister); Bahia (Wu-cherer) ; S. Paolo et Mattogrosso (Natterer). As will be seen from von Pelzeln's list, Natterer collected a large number of this species in various parts of Southern and Inner Brazil; but the specimens referred to as obtained by him at Barra do Rio Negro are more probably referable to the true A. magnirostris. An excellent series of examples of this Hawk, collected in the vicinity of Bahia, has lately been received by Salvin from Dr. Wucherer. W e have also to thank the authorities of the Norfolk and Norwich Museum for the loan of many specimens of this and the preceding species from their fine collection of Rapacious birds. Having already explained why the name magnirostris, which has |
