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Show 10 who, in order to show his sympathy with the technical side of the Society's work, proposed to further Zoological Science by having systematic collections made in that part of the world. The specimens would be laid before the Society from time to time, and after being worked out by specialists, would be presented to the National Museum. Of the present series Mr. Thomas drew attention to a fine Marten which appeared to be different from the true Mustela melampus, and which he proposed to call M ustela melampus bedfordi, subsp. n. General colour olivaceous isabella, quite different to the golden yellow of true melampus. Throat and neck with a strongly contrasted yellow patch. IIah. Nara district, Southern Central Hondo. Type. Adult male. Original number 213. Collected by M. P. Anderson. Mr. B. I. P ocock, the Superintendent of the Gardens, exhibited a female specimen of the Jamaican Scorpion, Centrums insulanus, carrying its young on its back. The specimen had been presented to the Society by Mr. H. Munt, F.Z.S. Dr. P. Chalmers M itchell, Secretary of the Society, read a paper entitled " On the Intestinal Tract of Mammals," and illustrated it by lantern-slides prepared from some of the drawings which he hoped would accompany the memoir on publication. In the course of the last eight years, the Author had taken every possible opportunity of studying the alimentary tract of Mammals from specimens that had died in the Society's Gardens, and had obtained additional material elsewhere, with the result that his investigations covered over two hundred individuals, and included the greater number of the Mammalian Orders. The paper described the Mammalian Intestinal Tract as being composed of three definite morphological regions:-the duodenum ; Meckel's tract, which was derived from the pendent loop of Mammalian embryology, and was an outgrowth corresponding to only a very short part of the primitive straight gu t; and the hind-gut. As compared with the disposition in Birds, the Mammalian duodenum was less specialised ; Meckel's tract, which in Birds the Author had already shown fell into a series of patterns of systematic importance, was much more homogeneous throughout the Mammalian series; the hind-gut, which was of little importance in Birds, was developed in Mammals in varied patterns which had systematic importance. The Author showed that the single caecum which was characteristic of Mammals was probably one of an original pair, and that the traces of this paired origin were much more frequent in Mammals than had been supposed. He stated that the primitive paired caeca of Mammals were homologous with those of Birds. The paper then gave a systematic account of the |