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Show 1895.] MOLLUSCA OF THE A N D A M A N AND NICOBAR ISLANDS. 453 The type is in the Indian Museum, Calcutta, so I have not seen it. Nevill gives polynema, Morch, from Teressa, collected by de Roepstorff, which is no. 10 of the 'Hand-list,' and no. 13 from Batte Malve, collected by Stoliczka, as a variety oi polynema. Genus LAGOCHEILUS. 8.LAGOCHEILUS TIGNARIUS, Bs. (Cyathopoma?, Benson) (p. 444). The operculum in this species is slightly concave in front, multi-spiral ; the spiral defined by a narrow rib in relief. The operculum of L. tomotrema, of the Khasi Hill ranges, is horny, quite smooth in front, the spiral formation being but scarcely apparent. ACMELLA. Under this genus Nevill records A. andamanica as being in the Calcutta Museum, and says: " compared with A. hyalina (Theob. and Stolicz. from Moulmein), of which it is probably a large variety." 1. ACMELLA MELLILLA (p. 444). Locality. South Andaman (de Roepstorff). Shell dextral, ovately turreted; sculpture oblique, fine, close costulation; colour pale umber; spire depressedly conic; apex very blunt, suture impressed; whorls 5, sides flat ; aperture oval, suboblique; peristome double, with a strong callus on the body-whorl. Fig. C. Acmella mellilla. Size: maj. diam. 1*25 ; alt. axis 1*75 mm. Only one specimen in the collection. 5. ACMELLA GIBBOIDEA, Nevill MS. (p. 444). The two typical examples of this species are in the Indian Museum, collected by de Roepstorff in the Andamans. Genus CYATHOPOMA. 1. CYATHOPOMA NATALICIUM, n. sp. (p. 444). Locality. Camorta. This is no. 50 of Nevill's ' Hand-list,' which is not named. There are four specimens in the Indian Museum, |
