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Show 566 MESSRS. SCLATER AND SALVIN ON [May 23, The White-eyed Australian Crow at present in the Society's Gardens, the manners of which were exceedingly like those of the British Jackdaw, was identical with this smaller kind. Length from bill to gape 2\ inches, of tail 7\ inches, tarsus 2\ inches, and middle toe with claw 2 inches. The larger species was probably that noticed by M r . Ramsay in the ' Ibis' for 1865, p. 303, as being distinguished by having a dark-coloured iris. The lanceolate feathers in front of the neck were considerably more developed than in the other; and the throat was bare of feathers to a much greater extent, having merely a narrow central strip of them. Length of wing from carpus 14f inches, tail 9 inches, bill from point to gape 2f inches, tarsus 2\ inches, and middle toe and claw 2f inches. In tbe smaller species the bill was more distinctly angulated than in the other; but in other respects the two bore a near resemblance. The following papers were read :- 1. List of Birds 6ollected by Mr. Wallace on the Lower Amazons and Rio Negro. By P. L. S C L A T E R , M.A., F.R.S., and O S B E R T S A L V I N , M.A., F.Z.S. (Plates XXIX. & XXX.) Mr. Wallace having kindly placed in our hands the collection of birds remaining in his possession from his former travels on the Lower Amazons and Rio Negro, we have had great pleasure in determining the species and in compiling the subjoined list of them. As regards the vicinity of Para and the Lower Amazons Mr. Wallace believes the series now remaining in his hands to contain specimens of nearly all the species collected, with the exception of the water-birds, some of which have been altogether parted with. But a large part of the collections made on the Rio Negro, as likewise nearly all those from the Upper Amazons above Barra, were most unfortunately lost in the manner mentioned by Mr. Wallace in the Preface to his ' Travels on the Amazon and Rio Negro ' (Preface, p. 4). Some few specimens of Upper-Amazons species still remain in M r. Wallace's possession ; but we have not included their names in the present list, as the country in which they were collected belongs to a different zoological province. Many naturalists have at different times passed up and down the Lower Amazon and Rio Negro, and collected at various points on their banks; but we are still without anything like a detailed or connected account of the ornithology of the regions through which they travelled. It is in fact only within the last few years that the importance of giving exact localities to objects of natural history has met with the appreciation it deserves. Coming as it does from ground so repeatedly traversed, it was not to be expected that M r . Wallace's collection would contain many novelties ; and it is therefore chiefly with the object of elucidating the avifauna of this region, and fixing to exact localities species of which the precise patria |