OCR Text |
Show 1867.] MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 933 Fam. PECTINID^E. 128. PECTEN TEGULA. Ostrea tegula, Wood, Index Test. Supp. p. 7, pl. 2; Reeve, Conch. Icon. pl. 30. f. 136. This fine species is distinguished by the irregular foliaceous scales that ornament the ribs. It varies considerably in colour, from yellowish orange, purplish grey, and dull red, to a fine rich chocol'ate-brown, with whitish scratch-like lines towards the umbones. Found amongst rocks and under stones at low water in Port Jackson. Length 2| inches. It is also met with at Moreton Bay and New Caledonia. 129. VOLA FUMATA. Pecten fumatus, Reeve, Conch. Icon. Pecten, pl. 7. f. 32. The right valve is very convex and broadly ribbed ; and the left valve concavely flattened, rayed with twelve narrow, raised, rather distant ribs, and immersed in the right valve. The deep smoky-purple colouring and the produced recurved beak of the right valve are peculiar. Dredged in sandy mud in Lane Cove and Middle Harbour. Length 3| inches. Fam. RADULID^E. 130. RADULA LIMA. Ostrea lima, Linn. Lima squamosa, Lam.; Sow. Thes. Conch, pl. 21. f. 17, 18. This widely distributed species is not uncommon amongst rocks and under stones at low water in Port Jackson, and at Wollongong and Port Stephen, &c. Length 2 inches. 131. RADULA (LIMATULA) BULLATA. Ostrea bullata, Born. Lima fragilis (var. b), Lam.; Sow. Gen. of Shells, f. 3. A narrow, inflated, nearly equilateral, white shell, longitudinally ridged, with the" ears almost equal. Under large stones and slabs of rock at low water in Watson's Bay and Middle Harbour &c. Length 1\ inch. The animals of L. bullata form a sort of nest amongst the fragments of broken shells and corals in the rock-pool3, where they dwell gregariously. Fam. ANOMIID,E. 132. PLACUNANOMIA (MONIA) IONE. Placunanomia ione, Gray. This fine species differs from P. macrochisma, Desh. (from the Gulf of Tartary), in having the plug large and triangular. It is found attached to the under surface of rocks at low water near Port- |