OCR Text |
Show 1877.] MR. G. F. ANGAS ON NEW AUSTRALIAN SHELLS. 171 showing here and there narrow, transverse, somewhat diaphanous lines of a dark colour, very finely longitudinally striated with the lines of growth ; whorls 5, very convex, the last inflated; sutures impressed; aperture subcircular ; outer lip simple, arcuate ; margins united by a broad, flattened, whitish callus, which is expanded over the columella and somewhat produced at the base. Operculum horny, paucispiral, with the nulceus subcentral. Long. 4, lat. 2 | lin. Hab. Shores of Lake Eyre, South Australia (Waterhouse). 5. Descriptions of one Genus and twenty-five Species of Marine Shells from N e w South Wales. By G E O R GE F R E N C H A N G A S , F.L.S., C.M.Z.S., &c. [Received February 19, 1877.] (Plate XXVI.) MUREX BRAZIERI, n. sp. (Plate XXVI. fig. 3.) Shell elongately ovate, solid, light brown, tinged with brownish purple on the columella and within the aperture, variced with six irregular varices ; whorls 5, somewhat excavated and flattened above, the upper ones encircled with two, and the last with five strong erect ribs, some of which are double, crossed longitudinally with squamate ridges throughout, which are nodulous on the ribs, and become more foliaceous towards the base ; aperture ovate, outer lip dentate within ; canal half the length of the aperture, slightly recurved. Long. 4, lat. 2 lin. Hab. Dredged outside Port-Jackson Heads in 20 fathoms (Brazier) . This little species is somewhat allied to Murex mundus of Reeve. PERISTERNIA BRAZIERI, n. sp. (Plate XXVI. fig. 4.) Shell fusiform, moderately solid, light yellowish brown, longitudinally ribbed with about eight broad ribs, tumid above, which become obsolete towards the anterior portion of the basal whorl, crossed with numerous fine, impressed, concentric lines, especially on the upper whorls ; whorls 6^, slightly flattened below the sutures ; sutures irregularly impressed; aperture narrowly ovate; outer lip with a small blunt tooth anteriorly ; columella arcuate, with a slight callous projection close to its junction with the outer lip; canal moderate, very slightly exserted and recurved. Length 1 inch, breadth 5 lines. flab. Near Redbank River, N e w South Wales (Brazier). The tooth-like projection just inside the outer lip, at the upper portion of the canal, is only present in fully adult specimens. The slight fold in the columella, characteristic of Peristernia, is either absent or but very faintly developed in the present species. |