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Show 226 MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. [Feb. 14, lines of rose-colour, and painted with wavy longitudinal stripes the same hue. It forms a beautiful object in the water, when crawling about on the sandy bottoms of the rock-pools left by the receding tide, the expanded membranaceous foot of the animal being bordered with azure-blue. On examination I found it had a small, horny, linear, transverse operculum like the Acteeonidee, and ought therefore probably to be included in that family. Rock-pools at Coodgee Bay and Middle Harbour, at low spring tides. Length 8 lines. Fam. CYLICHNIDJE. 255. CYLICHNA ARACHIS. Bulla arachis, Quoy, Voy. de l'Astr.; Sow. Thes. Conch, p. 590. f. 133, 134. A solid, cylindrical, white shell, covered with a rust-coloured epidermis. Dredged in Port Jackson. This species is found also at Wollongong and Port Stephen, in sandy mud. Length 8 lines. 256. TORNATINA FUSIFORMIS. Tornatina fusiformis, A. Ad. Thes. Conch, p. 570, pl. 121. f. 37. A little, white, shining species, dredged at Port Stephen and Port Jackson, in 4 fathoms. Length 3 lines. Fam. BuLLiD^E. 257. B U L L A OBLONGA. Bulla oblonga, A.Adams, Thes. Conch, p. 577, pl. 123. f. 74. This large and somewhat elongated species is common on muddy bottoms in all the bays along the coast of New South Wales. It ranges westward to Port Phillip, South Australia, and Swan River; and, according to Cuming, is found in the Philippines and South- Sea Islands. Length 2 inches 4 lines. This shell has hitherto been confounded by some authors with B. australis of Quoy & Gaim., which is found in Tahiti. 258. BULLA PUNCTULATA. Bulla punctulata, A. Adams, Thes. Conch, p. 577, pl. 123. f. 77. Clouded with clusters of black and white punctated spots on a light-brown ground. Found in deep water, in sandy mud. Rare in Port Jackson. It is found also in New Caledonia." Length 1 inch 4 lines. 259. BULLA SOLIDA. Bulla solida, Gmel. (not Bruguiere) M S . in Coll. Cuming. A prettily painted species, peculiarly marked with large angular blotches of rose liver-colour on a greyish-white ground. Middle Harbour, Port Jackson. Length 1 inch. |