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Show 1895.1 ON NEW MOLLUSCS FEOM BOBNEO. 241 3. On the Structure and Affinities of some new Species of Molluscs from Borneo. By WALTER E. COLLINGE, F.Z.S., Assistant Lecturer and Demonstrator in Zoology and Comparative Anatomy, Mason College, Birmingham, and Lieut.-Col. H. H. GODWIN-AUSTEN, F.R.S., F.Z.S., &c. [Eeceived February 28, 1895.] (Plates XI.-XIV.) CONTENTS. Page I. INTRODUCTION 241 II. DAMAYANTIA SMITHI, n. sp 242 Description of Shell 242 Description of Animal 242 1. Anatomy 243 Visceral Mass, &c 243 Generative Organs 243 2. Affinities 243 III. MlCROPARMARION POLLONERAI, n. Sp 244 Description of Shell 244 Description of Animal 245 1. Anatomy 245 Visceral Mass, &c 245 Generative Organs 245 IV. MlCROPARMARION SIMROTHI, n. Sp 246 Description of Shell 246 Description of Animal 246 1. Anatomy 246 Visceral Mass, &c 246 Generative Organs 247 2. Affinities 247 V. SUMMARY AND CONCLUSION 248 VI. BIBLIOGRAPHY 249 VII. DESCRIPTION OF THE FIGURES (Plates Xr.-XIV.) 249 I. INTBODUCTION. The molluscs which form the subject of this paper were some collected by Mr. A. H. Everett in Borneo and forwarded to Mr. Edgar A. Smith of the British Museum, who very kindly placed them in the hands of one of us (W. E. C.) for investigation. While fully describing the species, we have thought it necessary and important to treat at some length of the affinities structurally and externally, and to compare them with other genera and species of the Indian and Malayan fauna, upon which one of us (H. H. Gr.-A.) has worked for some considerable time. The perfect specimens and the dissected parts have all been placed in the collection of the British Museum, South Kensington. It is sincerely to be hoped that further Bornean material will be obtained, as there are probably not a few very interesting forms in that region which bridge over the gaps that at present PEOC. ZOOL. Soc-1895, No. XVI. 16 |