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Show 1867-] MR. G. F. ANGAS O N AUSTRALIAN MOLLUSCA. 223 236. LEPIDOPLEURUS ANTIQUUS. Chiton antiquus, Reeve, Conch. Icon. pl. 25. f. 169. C. apparata, Carp. C. elenensis, Sow. A highly sculptured species, with two broad divaricating ridges on each side of the valves. Port Jackson, rare, Length 10 lines. 237. *TONICIA CARPENTERI. Tonicia carpenteri, Angas, P. Z. S. 1867, p. 116. A pretty, ovate species, concentrically subimbricately sculptured, with alternate pale and dark spots at the hinder edges of the valves, and the umbo nearly terminal. Port Jackson, very rare. Length 9 lines. 238. LEPTOCHITON VERSICOLOR. Leptochiton versicolor, A. Ad. P. Z. S. 1852, p. 92, pl. 16. f. 5. A nearly smooth species, delicately shagreened under the lens, of very rare occurrence. Found near the Heads of Botany Bay. It is variegated with maroon and olive. Length 1 inch. 239. ONITHOCHITON INCEI. Chiton incei, Reeve, Conch. Icon. sp. 94. A beautiful species, with the valves longitudinally crenated, and clouded more or less with olive, green, and rosy flesh-colour. Occurs under stones at Watson's Bay, at very low tides. Length 1\ inch. 240. *ONITHOCHITON RUGULOSUS. Onithochiton regulosus, Angas, P. Z. S. 1867, p. 115. A nodulously sculptured species, having the valves bordered with green, and ornamented with concentric wavy bands of yellowish' olive. Port Jackson, very rare. Length 8 lines. 241. CHITON PICEUS. Chiton piceus, Gmel. Syst. Nat. p. 3204. 1 C. magellanicus, Lam. ? C. incanus, Gould, Exped. Shells. This very common species is freely distributed on most parts of the coast of New South Wales. Dwelling in cavities on the upper surfaces of rocks exposed to the full action of the waves, the valves are generally more or less worn and destitute of character. A dark stripe runs along the centre of the umbones, and the mantle is covered with alternate bands of black and white calcareous spicula. Length 2\ inches. 242. CH^ETOPLEURA RUGOSA. Chcetopleura rugosa, Gray; Sow. Conch. 111. f. 49. This species is but rarely met with in Port Jackson. The mantle is covered with straggling horny bristles, and the valves corrugately sculptured. Length 10 lines. |