OF NEW SOUTH WALKS. 249 manner of breeding of hermaphrodite mollusca. As yet, we know little or nothing of the physiology of reproduction under these peculiar conditions, and I submit that most important physiological and zoological facts are contained therein, bearing on the whole question of evolution. The subject may he said to be at our doors, and may he studied with the greatest ease by anyone who gives it a careful attention. I have written this paper in the hope of drawing other observers into this most inviting and interesting field. Shells collected during the Chevert Expedition, with Descriptions of the New Species, by J. Brazier, C.M.Z.S. Family Scalaridje. 1.— scalaria rkplicata. Scalaria replicata, Sow. Jun., Proc. Zool. Soc, London, 1844, p. 11. „ „ Sowerby, Thes. Conch., vol. 1, p. 84, pi. 32, f. 23, 24. Hob. Darnley Island, Torres Straits, 10 fathoms, sandy mud. 2. — Scalaria Phillippinarum. Scalaria Phillipjainarum, Sowerby, Jun. Proc. Zool. Soc, London, 1844, p. 12. Thes. Conch., vol. 1, p. 85, pi. 32, f 21 22 Hah. Darnlsy Island, Torres Straits, 10 fathoms, sandy mud. This species is also found in Port Jackson. 3. — Scalaria irregularis. Scalaria irregularis, Sowerby, Proc. Zool. Soc, London, 1844, p. 13. ,, ,, ,, Thes. Conch., vol. 1, p. 90, pi. 33, f. 40, 60. Hah. Bet Island, Torres Straits, 11 fathoms, coral and sand. Specimens also found on the beaches inside the reefs after ^ahs.