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Show 1867.] MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 927 More solid and inflated than the preceding, with the concentric ridges stronger, and the radiate sculpture wanting. New South Wales and Port Phillip. Length 6 lines. Fam. UNGULINIDJE. 92. M Y S I A SPH^ERICULA. Diplodonta sphcericula, Deshayes. A thin, smooth, globular species, very much swollen towards the umbones, pearly white, covered with a fibrous olive epidermis towards the margins. Dredged in the Parramatta River and mouth of Lane Cove, in black mud in 3 or 4 fathoms. Length 10| lines. 93. MYSIA GLOBULOSA. Diplodonta globulosa, A. Adams, P. Z. S. 1855, p. 226. A rounded species, of a dirty-whit'e or horn-colour, not unlike D.janeirensis, Reeve. Dredged in Port Jackson. Length 7 lines. 94. *MYSIA (FELANIA) ADAMSI. Mysia (Felania) adamsi, Angas, antea, p. 910, Pl. XLIV. f. 9. A depressed, orbicularly elongate, shining white species. Length 6 lines. Dredged in deep water. Port Jackson. 95. *MYSIA (FELANIA) JACKSONENSIS. Mysia (Felania) jacksonensis, Angas, antea, p. 910, Pl. XLIV. f. 10. Of a pale rosy flesh-colour, covered with alight-greenish epidermis. Length 4 lines. Dredged in Middle Harbour. Fam. LASEID^E. 96. LASEA SCALARIS. Poronia scalaris, Phil. A minute shell, broadly concentrically ribbed, having somewhat the aspect of a Venus. Length 2 lines. Gregarious, in crevices of rocks at low water in Port Jackson. 97. LASEA AUSTRALIS. Poronia australis, Souv. Journ. de Conch. 1863, p. 287, pl. 12. f. 8. Larger than the preceding, nearly smooth, and tinged with rose-violet at the margins. Length 3 lines. In crevices of rocks, at low water, Port Jackson; New Caledonia (Montrouzier). 98. KELLIA ROTUNDA. Erycina rotunda, Desh. P. Z. S. 1855, p. 181. A small, horny, triangularly orbicular species. Length 4 lines. Port Jackson; Newcastle, New South Wales; and Moreton Bay. |