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Show 1895.] NEW MOLLUSCS FBOM BOBNEO. 249 Indian forms bear to Macrochlamys and allied shell-bearing and any true attempt at classification must be based on these lines, and would place a wide gulf between Girasia and Austenia on the one side, and Parmarion and Microparmarion on the other. Further, we think that future research will clearly show that many of the slugs cannot rightly be placed in families by themselves, but will find their true position before or after the genera they have descended from or developed into. VI. BlBLIOGEAPHY. 1. GODWIN-AUSTEN, H. H.-" On the Land-Molluscan Genus Girasia of Gray." P. Z. S. 1880, pp. 289-299, pis. xxiv.- xxvii. 2. GODWIN-AUSTEN, H. H.-" On a Collection of Land-Shells made in Borneo by Mr. Everett, with Descriptions of supposed new Species." P. Z. S. 1891, pp. 22-47, pis. ii.-vi. 3. H U M B E B T , A.-" Etudes sur quelques mollusques terrestres nouveaux ou peu connus/' Memoires de la Soc. de Phys. de Geneve, Bd. xvii. pp. 109-128. 4. ISSEL.-" Mollusca Borneensis." Annali d. Museo Civico Genova, vol. vi. 1874, pp. 366-478, tav. iv.-vii. 5. MAETENS, VON.-Preussische Expedition nach Ost-Asien : Landschneck., 1867. 6. SEMPEE, C.-Eeisen im Archipel der Philippinen, 1870. 7. SIMEOTH, H E I N B I C H . - " Ueber einige Parmarion-Arten." Zoolo-gische Ergebnisse einer Eeise in Niederlandisch Ost-Indien, 1893, Bd. iii. pp. 100-111, tab. vii. & viii. VII. DESCRIPTION OF THE FIGTJEES. PLATES XI.-XIV. Fig. 1. Damayantia smithi, n. sp. View from right side. X 2-5. 2. Damayantia smithi, n. sp. View from left side. X 2-5. 3. Damayantia smithi, n. sp. View from above. X 25. 4. Dorsal view of shell. X 2-5. 5. Visceral mass, showing spiral fold, sp.f. X 25. 6. Caudal mucous pore. X 8. 7. Jaw. X 12. 8. Portion of lingual ribbon. X 368. 9. Generative organs, x 2*25. Lettering. alb.gl. Albumen-gland. ov. Oviduct. am. Amatorial organ. p. Penis. d.s. Dart-sac. pr. Prostate. /. Flagellum. r.m. Retractor muscle. h.d. Hermaphrodite duct. r.s. Receptaculum seminis. h.gl. Hermaphrodite gland. r.s.l. Right shell-lobe. l.d.l. Left dorsal lobe. v. Vestibule. l.s.l. Left shell-lobe. v.d. Vas deferens. ov'. Free oviduct. vg. Vagina. Figs. 10 & 11. Upper portion of penis, from both sides. X 3. Fig. 12. Dart-sac and dart in situ, x 8. 13. Microparmarion pollonerai, n. sp. Dorsal view. X 2"4. |