Report on the zoological collections made in the Indo-Pacific Ocean ...

MOLLUSCA. 5711 fms., and Port Molle, 14 fms. {Coppinger) ; Palm Island, CapeYork, Cape Grenville, Darnley Island, &;c. (Brazier)."The two embryonic whorls of this pretty species are smooth,glossy, and very convex. The colour of the fresh specimen fromPort Curtis is light yellowish brown, with a dark brown band atthe upper part of the whorls immediately beneath the suture. Theoperculum is ovate, rather acuminated below, concentrically striated,with the nucleus near, but not at, the lower extremity.47. Natica (Lunatia) plumbea.Natica plumbea, Lamarck, Philippi in Kilster^s Con.-Cab. p. 61, pi. 8.figs. 3, 4 ; Reeve, Conch. Icon. figs. 34 a, b.Natica strangei, Reeve, I. c. figs. 81 a, h.Exemplum distortura= Natica leucophaea, Reeve, I, c. figs. 51 a, b.Hah. Port Denison, Queensland, on the shore {Coppinger) ; CapeUpstart, and from north of Cape Hillsboro', N.E. Australia, crawlingon sand- or mud-banks at low-water mark {J. B. Jukes in Brit.Mus.) ; Port Essiugton (Capt. Wiclcham, E.N.) ; Brisbane Water(Strange) ; New South Wales (Angas), &c.48. Natica limpida. (Plate V. fig. L.)Shell subglobose, thinnish, semitransparent, whitish, somewhatnarrowly unbilicated, glossy, sculptured with fine lines of growth.Spire small, culminating in an obtuse apex. Whorls 3|, veryconvex, rapidly increasing, separated by a simple linear suture,beneath which there is a narrow opaque-white margin. Aperturerather more than semicircular, narrower above than at the lowerpart. Columella slightly oblique, straightish or only feebly arcuate,a little thickened, somewhat expanded at the upper part, and joinedto the extremity of the outer lip by a thin callosity. Outer lip(viewed laterally) a trifle oblique, and exhibiting near the suturea small shallow sinuation. Umbilicus rather narrow, without anyinternal ridge. Operculum unknown. Length 8 millim. ;greatestdiameter i), smallest 6^.Hah. West Island, Prince of Wales Channel, Torres Straits,7 fms.This may prove eventually to be the young state of the species,a supposition partly based upon the larger size of the nuclear whorlsand partly upon the thin semitransparent character of the shell.49. Natica (Mamma) columnaris.Natica columnaris, Rech(z, Reeve, Conch. Icon. figs. 19 a, b.Hah. Prince of Wales Channel, 9 fms. (Coppinger) ; PhilippineIslands (Cuming) ; Ceylon (E. W. H. Holdsworth iji Brit. Mus.).