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Show 1S67.] MR. G. F. ANGAS O N AUSTRALIAN MOLLUSCA. 921 58. CHIONE (CIRCOMPHALUS) ROBORATA. Venus roborata, Hanley, P. Z. S. 1844, p. 161 ; Reeve, Conch. Icon. Venus, pl. 23. f. 113. A solid, rounded species, less inflated than V. calophylla, of a waxy-white colour, with the concentric ridges very numerous, thickened, and curved inwards. A single example only of this shell was dredged at the "Sow and Pigs" bank, Port Jackson; in Tasmania it is of frequent occurrence. Length 1 inch 2 lines*. . 59. CHIONE (CIRCOMPHALUS) CALOPHYLLA. Venus calophylla, Hanley, Recent Shells, App. p. 361, pl. 16. f. 26 ; Reeve, Conch. Icon. Venus, pl. 23. f. 114. A very elegant species, with distant, thin, erect frills, the surface of the valves between which is smooth; white or pale flesh-colour. Dredged in black mud at the mouth of Lane Cove, and at Port Stephen. Length lg inch. This shell may at once be distinguished from the still more beautiful V. lamellata, Lam. (from South Australia), by its rounded form, smaller size, and the erect frills being nearly smooth, and not grooved on their undersides. 60. CHIONE (CIRCOMPHALUS) ALATUS. Venus alatus, Reeve, Conch. Icon. Venus, pl. 18. f. 83. A solid, nearly smooth species, broadly rayed with pale brown, with a few erect ridges at the posterior side. The young shells are more or less distantly ridged throughout. From deep water on the coast, at Wollongong, Port Stephen, &c. Length 2 inches 3 lines. I obtained several specimens of this species on the beach at Porirua, Cook's Straits, New Zealand. 61. CHIONE (TIMOCLEA) AUSTRALIS. Venus australis, Sow. Thes. Conch, p. 48, pl. 157. f. Ill, 112; Reeve, Conch. Icon. Venus, pl. 22. f. 107. A pretty, ovate species finely ridged and cancellated, and blotch-rayed with chestnut. Interior rose-purple. Dredged at Watson's Bay. Length 1 inch 3 lines. It occurs also in South Australia and at Swan River. 62. CHIONE (MARCIA) FUMTGATA. Venus famigata, Sow. Thes. Conch, p. 102, pl. 159. f. 152-155 ; Reeve, Conch. Icon. Tapes, pl. 7. f. 31. A somewhat inflated, ovate species, acuminately produced posteriorly, smooth, and of a light olive-grey colour throughout, with the posterior slope of the dorsal margin grooved. Dredged in Illawarra Lake. Length 1| inch. * The Venus isabellina, Phil. (Reeve, Conch. Icon. pl. 23. f. 112), stated to come from " Sydney," I have never met with there. M y specimens are from Port Curtis. It seems to be intermediate between V. calophylla, Hani., and V. dysera, Chemn., the latter a well-known Chinese species, which Mr. Reeve curiously ignores. PROC. ZOOL. S O C - 1867, No. LIX. |
