OCR Text |
Show 1877.] MR. G. F. ANGAS ON NEW AUSTRALIAN SHELLS. 175 TURBO EXQUISITUS, n. sp. (Plate XXVI. fig. 18.) Shell small, imperforate, solid, pale greenish buff or light pink, painted with very broad descending flames of an orange colour on tbe upper portion of the whorls; whorls 4£, angulated at the periphery, flattened above, the upper whorls encircled below the angle with two, and the last whorl with five stout scabrously nodulous ribs; between these and the sutures are four or five smaller and closer ribs of a similar character, and on the base of the last whorl about eight ribs, which are less nodulous and scabrous than those above, the interstices being crossed by fine striae ; spire somewhat elevated ; aperture nearly circular ; columella thickened, terminating in a blunt callosity at the base; pearly within. Length 6, breadth 4\ lines. Hab. Cape Solander, Botany Bay : found after an easterly gale (Brazier). A variety occurs of a brilliant orange-red colour throughout. CYLICHNA ELEGANS, n. sp. (Plate XXVI. fig. 19). Shell elongately ovate, umbilicated, rather thin, white, irregularly and faintly longitudinally striated, the striae more distinct and equal near the apex, transversely ornamented with numerous rows of very fine, close-set, crenate, interrupted lines, which, together with the longitudinal striae, become very nearly obsolete towards the centre; apex perforate, somewhat tumid around the perforation; aperture narrow above, wider below; outer lip thin, simple ; columella short, smooth, very slightly expanded over the umbilicus. Length 6, breadth 3 lines. Hab. Port Stephens, N e w South Wales (Brazier). D I A P H A N A BRAZIERI, n. sp. (Plate X X V I . fig. 20.) Shell subgiobose, with along narrow open umbilicus, thin, hyaline, covered with a fine membranaceous olive epidermis; last whorl inflated ; spire flatly depressed; whorls 3|-, rounded above, sutures impressed; aperture contracted above, subovate below; outer lip sharply angled posteriorly, slightly sinuous, arcuate below ; columella abruptly truncate below the umbilicus. Length 2 lines, breadth 11 line. Hab. " Sow and Pigs," Port Jackson. In 4 fathoms, sandy mud, on weeds (Brazier). ERVILIA AUSTRALIS, n. sp. (Plate XXVI. fig. 21.) Shell oblong-ovate, equivalve, subequilateral, moderately convex, rather solid, white, with one or two small light-brown markings on either side of the anterior portion of the dorsal margin, and sometimes on the posterior; finely transversely striated, and on either side crossed with a few delicate radiating lines, which are more numerous in front; umbones small, strongly defined, incurved, approximate; dorsal margins nearly flat ; anterior side a little produced ; posterior side rounded ; ventral margin convex. Long. 3£, alt. 2\, lat. l^lin. Hab. "Sow and Pigs" bank, Port Jackson (Brazier). |