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Show '887.] MR. R. TRIMEN ON LANIARIUS ATROCROCEUS. 397 <of damaging the L. atrocroceus. At length (several interlacing branches partly screening the birds) he ventured a shot, and had the satisfaction of securing the prize in excellent condition. The L. atrococcineus still kept in close proximity, apparently looking out for his opponent. Mr. Eriksson shot this specimen also, in order to make sure of its being a male. "This discovery of a second example of L. atrocroceus in a locality so little removed from that of the first is of much interest; and in the complete absence of any record of so conspicuous and striking a bird from any other part of Africa, tends strongly to localize the race or variety within very narrow limits. [The sex of Dr. Brad-shaw's specimen was not ascertained.] " The case of this Laniarius seems much to resemble those of the singular form of Cheetah (Felis lanea of Sclater), of which only five specimens are known, all from the very limited area of Nel's Point, in the Beaufort District of the Cape Colony, and the equally aberrant Leopard (F. pardus, L., var. melas; see Trimen, P. Z. S. 1883, p. 535, and Gunther, P. Z. S. 1885, pl. xvi. p. 243), of which only three examples are known, from the neighbourhood of the Koonap River, in the Fort-Beaufort District on the eastern side of the Cape Colony. It is very noticeable that, in all three cases, the abnormal form does not replace the normal one to which it is so nearly related, but occurs in the midst of the latter, quite isolated, yet appearing to maintain and perpetuate (albeit in but very few individuals) its peculiarities of colouring or of pattern." C O N T E N T S (continued). April 19, 1887. Page The Secretary. Exhibition of, and remarks upon, a set of eleven photographs, representing objects of Natural History collected by Prejevalski in Central Asia 36:> Mr. T. D. A. Cockerell. Exhibition of, and notes upon, some Mollusca taken at Isleworth, Middlesex 3frj The Secretary. Extract from a letter addressed to him by Mr. Albert A. C. Le Souef, C.M.Z.S., containing remarks upon some living Duckbills (Ornithorhynchusparadoxus) in confinement at Melbourne ggg 1. O n some Specimens of Disease from Mammals in tbe Society's Gardens. By J. B L A ND SUTTON, F.E.C.S., Erasmus Wilson Lecturer on Pathology, Eoyal College of Surgeons of England 364 2. O n the Arm-glands of the Lemurs. By J. B L A N D SUTTON, F.E.C.S 369 3. Contributions to the Anatomy of Earthworms.-Nos. I., II., III. By F R A N K E. B E D D A R D, M.A , F.E.S.E., Prosector to the Society, and Lecturer on Biology at Guy's Hospital (Plate XXXIII.) •' ."372 4. Eemarks upon the Moulting of the Great Bird of Paradise. By A. D. BARTLETT, Superintendent of the Society's Gardens 392 5 Description of a little-known Australian Fish of the Genus Girella. By J. DOUGLAS-OGILBY, Ichthyol. Dept. Australian Museum. (Communicated by F. D A Y , Esq., F.Z.S.) 393 6 On an undescribed Fish of the Genus Prionurus from Australia. By J. DOUGLAS-OGILBY, Ichthyol. Dept. Australian Museum. (Communicated by F. D A Y , Esq., F.Z.S.) ' 395 May 3, 1887. The Secretary. Eeport on the Additions to the Society's Menagerie in April 1887 396 The Secretary. Extracts from a letter addressed to him by Mr. Eoland Trimen, F.Z.S., respecting the obtaining of a second example of Laniarius atrocroceus ',' 393 |