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Show 1890.] MARINE MOLLUSCA OF ST. HELENA. 311 BARLEEIA WALLICHI. (Plate XXIV. fig. 19.) Testa B. congenitse similis, sed tenuior, pallidior, spiraliter tenuissime striata ; anfractus 5, convexiusculi, ultimus rotun-dalus, haud obsolete angulatus; peristoma undique tenue, marginibus callo tenui junctis. Longit. 2 millim., diam. 1. This species in form is very like B. congenita, from St. Helena. It is, however, rather smaller, thinner, paler, spirally striated, has no approach to an angle at the periphery, and has a thinner peristome. TURRITELLA CARINIFERA, Lamarck. Hab. Cape of Good Hope. TRIFORIS PERVERSA (Linne). Hab. South Africa (Cr. B. Sowerby). This well-known species occurs in Great Britain, Mediterranean, at Madeira and the Canary Islands, also on the coast of California. TURBO (OCANA) CIDARIS, Gmelin. Hab. Cape of Good Hope. TURBO (COLLONIA) INCERTUS. (Plate XXIV. figs. 21, 21 a.) Testa minuta, imperforata, subglobosa, fusco-purpurea, Icevis, incrementi lineis striata ; anfractus tres, convexiusculi, celeriter crescentes, ultimus magnus, rotundatus; apertura magna, fere circularis, longit. totius 4 fere cequans ; peristoma interruptum, margine exteriori tenui, columellari albo, incrassato, reflexo. Longit. 1^ millim., diam. maj. lj. The generic position of this minute species, of which there are five specimens in the collection, would be somewhat uncertain, if the operculum had not been present in one of the examples. It is white, slightly convex, and consists of about three whorls. PHASIANELLA NERITINA, Dunker. Hab. Cape of Good Hope. TROCHUS (CYNISCA) GRANULOSUS, Dunker. Hab. Table Bay, Cape of Good Hope. The type figured by Krauss (Siidafr. Moll. pi. v. fig. 28) is of a pinkish tint. White varieties are also met with. A. Adams described this species (P. Z. S. 1853, p. 183) as Cyclostrema granulata. The locality he gave, Philippine Islands, can scarcely be relied on. TROCHUS (GIBBULA) MUSIVUS, Gould. Hab. Simon's Bay, Cape of Good Hope (Gould). SCISSURELLA JUCUNDA. (Plate XXIV. figs. 22, 22 a.) Testa minuta,umbilicata, depressa, alba; anfractus tres, convexi, liris spiralibus, tenuissimis, aliisque radiantibus, cancellati, ultimus |