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614 EDGAR A. SMITH.211. Triforis gracilior, n. sp. (PL XXXV. figs. 18, 19). V.Testa T. excellenti similis, sed gracilior, cingulis duobus inferioribus subundulatis, alba, hie illicfusco maculata.Longit. 28 mm., diam. 5| mm.Like T. excellens, this species has three keels upon each whorl, but they are not so equal,the uppermost being a trifle more slender than the others. The latter also are slightly affectedby faint longitudinal depressions giving them an obscurely beaded appearance. The body-whorl isbicarinate at the periphery and has three or four lirae beneath. As in the preceding species, thespace between the second and third keel is a little broader than that which separates the firstand second, and the suture is filo-lirate.212. Triforis pura, n. sp. (PI. XXXV. figs. 20, 21). XII.Testa elongata, alba, clathrata, granulata ; anfractus circiter 20, fere plani, costis spiralibustribus granosis inaequalibus (costa mediana minima) cincti, inter costas longitudinaliter costati,ultimus costis senis (prope labrum duabus intercalatis) ornatus ; canalis dextrorsus, clausus, laevisapertura irregulariter ovata, obliqua ; labrum antice prominens, postice recedens ; columella callocrassiusculo reflexo induta.Longit. 14 mm., diam. 3.Of the three spirals the uppermost is a little stouter than the lowermost and the central oneis rather finer than the latter. The granules form oblique rows of three, being connected by thelongitudinal costae. The suture is thread-like.213. Vertagus fasciatus, Bruguiere, var. 4:0, a, XV. VIII, IX.214. Vertagus kochi, Philippi, 40, a, XT. XL215. Vertagus articulatus, A. Adams and Reeve (Cerithium articulatum. Adams and Reeve,3. V. articulatus, Sowerby, 40, a, A'F.) VI, X.216. Vertagus obeliscus, Bruguiere, var. cedo-nuUi (F. cedo-nulli, Sowerby, 40, a, A'F.)I, IX.V. cedo-nuUi is perhaps separable from oheliscus.217. Cerithium columna, Sowerby, 40,