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Show 198 MR. G. F. ANGAS O N AUSTRALIAN MOLLUSCA. [FEB. 14, 68. NATICA (LUNATIA) MELASTOMA. Natica melastoma, Swainson, Zool. Illust. pl. 79 ; Reeve, Conch. Icon. Natica, pl. 18. f. 78. A handsome species, less conical than N. plumbea, of a fulvous-ashy tint, with a coloured band below the suture, and having the umbilicus overspread by an orange-red callosity. It inhabits a similar locality to the preceding; and may be distinguished from N. strangei by its less conical form and filled up umbilicus. Length 1^ inch. 69. NATICA (LUNATIA) STRANGEI. Natica strangei, Reeve, Conch. Icon. pl. 18. f. 81. Like N. plumbea in form, bluish-ashy colour, with a red border round the umbilical area, and a paler band of the same colour beiow the sutures. Rare in Port Jackson. It extends northwards to Cape York. Length 1 inch 2 lines. 70. NATICA (NEVERITA) CHEMNITZII. Natica chemnitzii, Recluz, Mus. Cuming; Reeve, Conch. Icon. Natica, pl. 2. f. 7. This large species is nearly allied to N. lamarckiana, but is more conical, and has the umbilicus more covered by a callosity, which is divided in the middle. It is found on the sandy mud at low water in Middle Harbour and at Botany Bay. Length 2 inches. 71. NATICA (NEVERITA) LAMARCKIANA. Natica lamarckiana, Re'cluz, MS. Mus. Cuming; Reeve, Conch. Icon. Natica, pl. 2. f. 6. A globular depressed species, with the umbilicus largely angularly excavated and half covered by a grooved recurved callosity. Rare in Port Jackson. Length of m y specimen 1 inch. 72. *AMAUROPSIS MORCHI. Amauropsis morchi, Adams & Angas, P. Z. S. 1863, p. 423. A dark-brown horny-looking shell, in aspect something like a small Vivipara, with a very acute spire, and the whorls obtusely angled at the sutures. The"operculum is thin, horny, and subspiral. Only two examples of this interesting species have been obtained; they were found adhering to the under surface of a large stone, at Watson's Bay, just inside Port Jackson Heads, during an unprece-dentedly low tide. Length 5 lines. 73. NATICINA NITIDA. Naticina nitida, Reeve, Conch. Icon. Dredged near Spectacle Island. Several small specimens of this species were dredged at the above locality. It occurs also in South Australia. Length $ inch. |
