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Show 1871.] MR. G. F. ANGAS ON NEW AUSTRALIAN SHELLS. 19 apex obtuse ; aperture subcircular ; outer lip simple ; inner lip arcuate, thin; operculum multispiral. Diam. maj. If, min. 1, height 1 line. Hab. Under stones, Shark Island, Port Jackson {Brazier). 25. NERITINA (VITTA) PULCHERRIMA, n. sp. (Plate I. fig. 25). Shell small, ovate, smooth, shining, generally pale grey, more or less zoned with yellow, and with a white band near the upper part of the whorls, which is ornamented with patches of purplish-black waved lines, the whorl below the band being closely adorned with finer zigzag or undulating lines of the same colour ; spire short, apex obtuse ; whorls 3, rounded ; aperture oblique, semilunar ; outer lip thin ; columella covered with a white, polished, spreading callus ; margin slightly arcuate and crenate in the middle. Length 2 lines, breadth 1 line. Hab. Dredged near the " Sow and Pigs " reef, Port Jackson. A very prettily painted little species of a more rounded form than N. viridis, Linn., and easily distinguished by its peculiar style of ornamentation. 26. LIOTIA SPECIOSA, n. sp. (Plate I. fig. 26.) Shell rather solid, depressedly orbicular, pale brown, encircled by three prominent ribs, and longitudinally finely distantly plicate, the interstices denticulate ; whorls convex, excavated at the sutures; spire with the apex acute, exserted; umbilicus moderate, encircled by a rib similar to those on the body-whorl and decussated by concentric radiating strise within; aperture circular; outer lip a little thickened ; peritreme continuous. Diam. 1 line, alt. \ line. Hab. Double Bay, Port Jackson. Under stones at a very low tide (Brazier). 27. BUCCINULUS NIVEUS, n. sp. (Plate I. fig. 27.) Shell elongately ovate, rather solid, white, shining; spire acuminate, pointed at the apex ; whorls 7|, encircled by numerous unequal, irregular, impressed and finely punctured strise, which become fewer towards the upper whorls ; sutures impressed ; outer lip thin, a little sinuous, arcuate; columella with a prominent bilobed fold near the lower part, and a single small one above; inner lip covered by a spreading callus. Length 6 lines, breadth 2\ lines. Hab. Dredged near " Sow and Pigs" reef, Port Jackson (Brazier). A species of an ivory-white throughout, in form not unlike B. affinis (Solidula affinis, A. Ad., Proc. Zool. Soc. 1854, p. 61). 28. BULIMUS (LIPARUS) BRAZIERI, n. sp. (Plate I. fig. 28.) Shell oblong-ovate, thin, straw-colour, frequently with reddish-brown irregular spots and flames, and sometimes nearly all brown, longitudinally rugosely plicately ribbed and transversely striated, the intersections strongly granular; whorls 5, rather convex, sutures im- |