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Show 12 by the stouter hairs. The placenta was discoidal and closely resembled that of the Mouse (Mus musculus). The trophoblast was greatly thickened, and formed a distal portion which was broken up into a system of large irregular spaces containing maternal blood, and a proximal portion with more regular channels containing maternal blood between which foetal vessels extended. The proximal wall of the yolk-sac was very vascular and much folded, but the folds did not become involved in the placental tissue as in some other Muridse. The course of the blood-circulation and details of histology were also described. A paper was communicated by the Rev. H. S. G orham on some new Coleoptera from South Africa. The Beetles referred to were of the families Malacodermata, Cleridce, and Erotylidce ; and had been collected by Dr. H. Brauns of Willowmore, in Cape Colony, either at Willowmore or at Delagoa Bay in 1900 or 1901 ; and indicated that the Fauna of South Africa was rich in species of the two first families, and more so than had been supposed in members of the latter family. One new genus was described. Dr. A. Smith W oodward, F .B .S ., communicated a paper by Baron F rancis N opcsa entitled " Bemarks on the supposed Clavicle of the Sauropodous Dinosaur Diplodocus." This Meeting closes the Session 1904-1905. The next Session (1905-1906) will commence in November next. The following Papers have been received:- 1. Mr. M artin J acoby, F.E.S.-Descriptions of new Species of Oedionychis and allied genera (Phytophagous Coleoptera). 2. Dr. W alter K idd, F.Z.S.-On the Papillary Bidges in Mammals, chiefly Primates. 3. Mr. F. E. B eddard, F.R.S.--On some points in the Vascular System of JIatteria compared with that of the Lacertilia and Crocodilia. Communications intended for the Scientific Meetings of the Z oological Society of L ondon should be addressed to P. CHALMERS MITCHELL, Secretary. 3 H anover Square, L ondon, W. 13th June, 1905, |