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Show 292 MR. H. ADAMS ON NEW CEYLONESE SHELLS. [May 14, epidermide fusca hispida induta; spira elevata, acuta, sutura anfr. 4, rotundatis, ultimo cylindrico, vix descendente; apertura vix obliqua, circulari; perist. simplici, recto, breviter adnato. Operc. extus concavum, multispirum, marginibus simplicibus. Diam. maj. 3, min. 2\, alt. If mill. Hab. Mahe Island, Seychelles. This is an interesting addition to Mr. W . Blanford's genus Cyathopoma, the other species being confined to India, with the exception of C. deccanianum, of which I obtained a specimen from Sir David Barclav, found by him in the garden attached to his residence at Mauritius," where, however, it has probably been introduced. OMPHALOTROPIS BORBONICA, H. Ad. (Pl. XXVIII. fig. 14.) O. testa perforata, ovato-conica, tenui, sub lente minutissime punctato-striata, rubido-fulva, albido variegata et spira conica, apice acuto, sutura distincta; anfr. 6, convexiusculis, ultimo ventricoso, ad peripheriam et circa perforationem com-presse carinato; apertura vix obliqua, ovali; perist. simplici, recto, margine columellari subreflexo. Long. 7, diam. 4 mill. Hab. Isle of Bourbon. SCROBICULARIA (CAPSA) ROSTRATA, H. Ad. (Pl. XXVIII. fig. 15.) S. testa ovato-triangulari, convexiuscula, tenui, sordide alba, tenuibus concentricis sculpta, extremitate antica ovata, rostrata, compressa; umbonibus paulum antemedianis ; margine ventrali postice subsinuato. Long. 21, alt. 15, lat. 8 mill. Hab. Seychelle Islands. 7. Descriptions of some N e w Species of Shells, chiefly from Ceylon. By H E N R Y A D A M S , F.L.S. (Plate XXVIII.) Fam. STYLIFERIDAE. Genus PLICIFER, H. Ad. Testa imperforata, ovato-subulata, non nitens -, spira in stylum ducta, nucleo sinistrali; columella plicata; labro fiexuoso postice sinuato; apertura antice Integra. ' This curious little shell was found by Mr. Hugh Nevill on coral and in texture resembles the shell of Leptoconchus It is 1 hi that the Hyala abnormis of Gould is closely allied,'and wilfform I second species of the genus. ulUi a |