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Show 1877] MR. G. F. ANGAS ON NEW AUSTRALIAN SHELLS. 173 MARGINELLA METCALFI, n.sp. (Plate XXVI. fig. 9.) Shell elongately subtriangularly ovate, rather thin, smooth, polished, creamy white; whorls 4 ; spire obtusely conical, blunt at the apex; aperture rather narrow; outer lip thickened and slightly varicose; columella 4-plaited, the lowest plait descending. Long. 2, lat. 1 lin. Hab. Port Jackson. More elongated and less triangular than M. ochracea, Angas, and wanting the orange effuse band and pale varix of the latter. OBELISCUS JUCUNDUS, n. sp. (Plate XXVI. fig. 10.) Shell elongately subulate, smooth, shining, white, with two light-brown bands on each whorl, three on the last one; whorls 9, nearly flat; apex papillary, sinistral; sutures impressed ; aperture quadrately ovate; outer lip simple, arcuate; columella with a prominent twisted fold encircling the pillar. Long. 3, lat. 1 lin. Hab. Port Jackson, deep water (Brazier). OSCILLA LIGATA, n. sp. (Plate XXVI. fig. 11.) Shell very minute, elongately pupiform, rather thin, rosy white, transversely, broadly, and prominently ribbed; whorls 6, the apex terminating in a mucro or nipple ; aperture quadrately ovate; outer lip simple; interior of the columella furnished with a single small tiansverse tooth or plait. Long. 1, lat. g lin. Hab Botany Bay, N e w South Wales. This curious little shell is remarkable for its mucronate apex, and its pale pinkish colour. It belongs to the Pyrainidellida;. STYLIFER BRAZIERI, n. sp. (Plate XXVI. fig. 12.) Shell rather acuminately ovate, smooth, pellucid, white, polished ; whorls 6, rounded, flattened just below the sutures, which are very finely callously marginate; spire elevated, apex styliform ; aperture subovate, pointed behind, and rounded in front; outer lip thin, simple ; columella arcuate, very slightly thickened above, the margins joined by a thin distinct callus. Length 2 lines, breadth 1 line. Hab. "Sow and Pigs," Port Jackson. Parasitic on a species of starfish (Brazier). CONUS METCALFEI, n. sp. (Plate XXVI. fig. 13.) Shell triangularly elongate, very slightly everted towards the base, ornamented with rows of small distant square or elongated irregular brownish-yellow spots, those in the centre larger and more varied in shape, forming a sort of band, sculptured all over with rows of minute, close-set, oblong punctures more numerous and distinct towards the base, which is encircled by a number of narrow elevated ridges ; whorls 7, upper ones slightly concave, spirally striated, and |