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Show 1867.] MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 971 duced posteriorly. Found in the mud at Johnson's Bay, and on the banks of the Parramatta River. Length 7 lines. Subfam. LUTRARIIN^E. 33. L U T R A R I A DISSIMILIS. Lutraria dissimilis, Desh. P. Z. S. 1854 ; Reeve, Conch. Icon. Lutraria, pl. 2. f. 8. Like L. rhynchcena, Jonas, hut less curved and gaping. In sandy mud, Middle Harbour. Washed up on the beach at Edward's Bay occasionally after storms. Length 3 inches 9 lines. 34. 1 STANDELLA OVALINA. Mactra ovalina, Lam. Anim. sans Vert. vi. p. 104. A smooth, ovate, whitish shell, rather gaping posteriorly, with the hinder slope narrowly keeled. Dredged in Middle Harbour. Length 1 inch 5 lines. This species occurs also at Port Phillip. 35. ZENATIA ACINACES. Lutraria acinaces, Quoy & Gaim. Voy. de l'Astrol. iii. p. 545, t. 83. f. 5, 6 ; Reeve, Conch. Icon. Lutraria, pl. 4. f. 14. A large, oblong, compressed shell, resembling a flattened Lutraria, with the umbones anterior; covered at the sides with an olive-brown epidermis. Botany Bay, very rare. Length 4 to 5 inches. Also from New Zealand, according to Quoy, Earl, and Dieffenbach. Fam. TELLINID^E. 36. GARI (PSAMMOCOLA) TOGATA. Psammobia togata, Desh. P. Z. S. 1854, p. 318. A large ovately transverse shell, obliquely truncate posteriorly, white, and clothed with a strong olive-green epidermis, more or less eroded at the umbones. Length 3\ inches. Port Jackson, Port Essington, and the Philippines. Externally this shell has somewhat the aspect of a Glauconomya, and may be regarded as the type of a distinct group of the family Tellinidce. 37. GARI MALACCANA. Psammobia malaccana, Reeve, Conch. Icon. pl. 6. f. 42. A shining white species, delicately sculptured with oblique grooved striae, which suddenly terminate on the posterior side. Length 1 inch 3 lines. Dredged at Lane Cove, Port Jackson; also Port Denison, and Malacca (Cuming). 38. GARI ZONALIS. Psammobia zonalis, Lam. Anim. sans Vert. vi. p. 182. A compressed species, of a pale livid-brown colour, rayed with white. Length 1 inch. Middle Harbour; also Tasmania. |