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Show 1866.] MR. P. L. SCLATER ON CHAUNA NIGRICOLLIS. 369 not of Peten, at least of Guatemala or Honduras, the conclusion is utterly erroneous. And the mystery is thus solved. Mr. Bates, some time since, passed through Liverpool on his way from Chicago, and he fortunately visited this museum. In reply to m y eager inquiries on the subject he told me, to m y great surprise, that the bird was not a native of that country at all, but that " it was purchased alive by him at Belize, from a ship which had arrived from a port further south ! though be thinks not very far south." The only reason for considering the bird a native of Central America at all being thus exploded, there remains for more respectful consideration the locality given with our second specimen, that purchased from Mr. Leadbeater. This locality is "Bogota;" and, remarkably enough, the label bears the same date as that of Bates's specimens, both having been received in September 1843, though there is no entry whatever of this second bird in the ' Catalogue' spoken of above. But neither Bogota, situate at the base of two lofty mountains and nearly 9000 feet above the sea-level, nor any district immediately subjacent to it, is likely to afford very suitable haunts for a bird of this kind ; but that its true home will be found to be in low and swampy parts of N e w Granada may, I think, ultimately be proved to be true. This view receives countenance at least from the occurrence of the most closely allied, more recently discovered, Chauna nigricollis of Dr. Sclater, of which the four known specimens have all been received from the neighbourhood of Cartagena, N e w Granada. The description and figure of this species, as given in the 'Proc. Zool. Soc' 1864, p. 75, pi. xi., are so applicable to C. derbiana that actual comparison is, I think, desirable satisfactorily to determine their identity or distinction,-the contrast between the black of the neck and the paler colour of the body of C. nigricollis being distinct enough in the specimens of C. der- *biana, though not sufficiently brought out in the figure in Gray's ' Genera,' owing doubtless to the allowance made for the dingy-state of Bates's specimen consequent on its long captivity and rough treatment. 2. Note on Chauna nigricollis. By P. L. S C L A T E R , M.A., Ph.D., F.R.S., Secretary to the Society. Along with the communication which has just been read to the Meeting, Mr. Moore was kind enough to send up to the care of Mr. G. R. Gray the two original specimens of Chauna derbiana belonging to the Derby Museum. On comparing these with the typical example of m y C. nigricollis in the British Museum, I at once came to the conclusion that the two species were identical; and I may state that Mr. Gray, who most obligingly requested m y assistance in making the comparison, was of the same opinion. As some apology for having made the error of constituting the Chauna nigricollis as distinct, I may urge, first, that, as Mr. Moore |