1867.] MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 223 



236. Lepidopleurus antiquus. 



Chiton antiquus. Reeve, Conch. Icon. pi. 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 suhimbricately 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, pi. 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 jiiceus, Gmel. Syst. Nat. p. 3204. 



? C. maffellanicus, Lam. 



? C. incayius, 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^topleura rugosa. 



Chatopleura 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 iO lines. 



