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Show 764 MR. W. T. BLANFORD ON SHELLS OF THE [June 6, PLATE XLVH. Fig. 1. Astrcea denticulata, Ellis & Solander, X 1 ; p. 748. 2. ,, okeni, Milne-Edwards & Haime, X 1 ; p- 749. 3. „ rotumana. n. sp., x 1 ; p. 750. 4. Prionastrcea abdita, Ellis & Solander, X 1 ; p. 758. 5. ,, fusco-viridis, Quoy & Gaimard, X 1 ; p. 759. 6. „ echinata, Dana, X 1; p. 760. PLATE XLVIII. Fig. 1. Symphyllia sinuosa, Quoy & Gaimard, X 1; p. 738. 2. Hydnophora lobata, Lamarck, X 1|; p. 745. 3. „ exesa, Pallas, x I ; p. 745. PLATE XLIX. Fig. 1. Cyphastrcea saviynyi, Milne-Edwards & Haime, X 1 ; p. 761. 2. Orbicella wakayana, n. sp., x 1£ ; p. 753. 3. „ rotumana, n. sp., X 1 ; p. 755. 4. ,, heliopora, Lamarck, X 1 ; p. 756. 5. „ funafutensis, n. sp., X 1 ; p. 756. 4. On some Species of Shells of the Genera Streptaxis and Ennea from India, Ceylon, and Burma. liy YV. T. .BLANFORD, F.R.S., V.P.Z.S. [Received May 15, 1899.] » (Plate L.) In the preparation of a general account of Indian terrestrial Mollusca, 1 have bad occasion to go again over the somewhat numerous forms of Streptaxis and Ennea found in Southern India by Col. R. H. Beddome, from whose collections I described several species of those genera in 1880 K Col. Beddome has very kindly placed in m y hands for examination the various additional forms subsequently obtained by him, and although only one more Ennea appears to require description, the case is different with Streptaxis. This genus abounds on the hills of Southern India, and shows so much variation that it is very difficult to say how many forms present characters sufficiently well marked to justify specific rank. If every variety were described as distinct, a large number of " species " or " subspecies" might be proposed. In the present case only those forms, three in number, which are well marked and easily recognized have received specific names. A species of Streptaxis obtained by Col. Beddome in Burma and another that has long been in m y own collection from Cevlon are also described; also an Ennea collected in the Naga Hills by Col. Godwin-Austen, and another species from the neighbourhood of Moulmein obtained by Mr. Theobald and now in tbe British Museum collection at South Kensington. Remarks on some other species are added. Typical specimens of all the species here described are in the British Museum. 1 J. A. S. B. xlix. pt. 2, pp. 201-211. |