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Show 1867.] MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 231 spire; the columella is prolonged at the lower part, and the entire shell is of a peculiar rosy-violet hue. Found on the sands after storms, at Bondi &c. Height 1 inch. 303. IANTHINA (IODINA) EXIGUA. Ianthina exigua, Lam. Anim. sans Vert. vi. p. 206. 7. bifida, Nuttall, Jay's Cat. p. 295. I. capreolata, Mont. Journ. de Conch. 1860, pl. 2. f. 4. Pelagic, worldwide. Varying greatly in size; height of largest New South Wales specimens 8 lines. This species may be known by its sculpture, of densely set lamellar strise, and by the very deep notch in the outer lip, which gives it a bifid structure. Macgillivrayia spinigera and Cheletropis huxleyi are often washed ashore on Coodgee Beach. They are now ascertained to be only the pelagic fry of certain Gasteropods. Subclass PULMONIFERA. Fam. ELLOBIID-E. 304. CASSIDULA ZONATA. Cassidula zonata, H. & A. Ad. P. Z. S. 1854, p. 32. This species is found amongst the mangrove swamps and samphire marshes at Cook's River, Botany Bay. Length \ inch. Subfam. MELAMPIN^:. 305. OPHICARDILUS AUSTRALIS. Auricula australis, Quoy et Gaim. Voy. de l'Astrol. ii. pl. 13. f. 34-38. Melampus ovatus, Gray. This species is common on samphire swamps about Shoalhaven and Cook's River. It is dark olive with pale bands. Length 7 lines. 306. OPHICARDELUS SULCATUS. Laimodonta sulcata, H. & A. Ad. P. Z. S. 1854, p. 34. Very like the preceding, excepting that the spire is transversely sulcately ridged. Length 7 lines. 307. OPHICARDELUS QUOYI. Laimodonta quoyi, H. & A. Ad. P. Z. S. 1854, p. 34. Port Jackson. Shorter and stouter than the preceding species; of a uniform brown colour, without bands. Length 5 lines. 308. MARINULA XANTHOSTOMA. Marinula xanthostoma, H. & A. Ad. P. Z. S. 1854, p. 35. This pretty little species may be recognized by the three project- |
