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Show 200 MR. E. A. SMITH ON MOLLUSCA FROM JAPAN. [Feb. 18, 40. MUREX (PHYLLONOTUS) FALCATUS, Sowerby. Hab. Stations 9 and 17. For synonymy and distribution of this species consult Lischke s ' Japonische Meeres-Conchylien,' ii. p. 30. 41. MUREX (CERASTOMA) EMARGINATUS, Sowerby. Murex emarginatus, Conch. Illust. figs. 98-100; Reeve, Conch. Icon. iii. f. i. Hab. Stations 4 and 11. Kiusiu (Lischke). The operculum is subpyriform, having the nucleus at the outer side at a short distance from the lower or smaller extremity. On the lower surface it has a smooth thickening along the outer edge, and the marks of muscular attachment consist of a few narrow concentric layers placed obliquely crossways. It is of a reddish-brown colour, paler at the outer margin. 42. MUREX (CERASTOMA) RORIFLUUS, Adams & Reeve. Murex rorifluus, Ad. & Reeve, Voy. Samarang, p. 38, pi. viii. f. 2 a, 2 b. Murex monachus, Crosse, Journ. de Conch. 1862, vol. x. p. 55, pi. 1. fig. 8. Hab. Station 4. Bay of Talienwhan, N. China (Crosse); Tsau-lian (A. Adams, P. Z. S. 1862, p. 373); Nagasaki (Lischke). Korean archipelago (Samarang). Crosse refers to the similarity of his species to M. rorifluus. The type of the latter is now in the Museum, and appears to me a very worn specimen of the same species described as monachus. The specimen figured by Crosse is in bad condition and does not trulv represent the usual character of the colour of Japanese specimens. In these the ground-colour is a dark chocolate-brown, which is interrupted by narrow transverse whitish lines, two in number on the upper whorls, and varying from four to eight on the last; they are a trifle elevated, especially upon the varices. The latter vary in number, sometimes being four on a whorl and sometimes five. All the eleven specimens from the Goto Islands are smaller than those from Talienwhan, and rather narrower. Owing to the bad state of the shells, Crosse was not enabled to notify the presence of a very short tooth-like projection near the base of the labrum. It is very small, but still is constant in all perfect shells. The operculum is almost precisely the same as that of the preceding species. 43. MUREX (MURICIDEA) CIRROSUS, var., Hinds. Murex cirrosus, Hinds, P.Z. S. 1843, p. 128; Voy. Sulphur, 3. p. 9, pi. 3. f. 17, 18; Reeve, Conch. Icon. i. fig. 138. Hab. Station 2. Straits of Macassar (Hinds) ; Andaman Islands (Capt. Wilmer). The single specimen obtained by Capt. St. John off the coast of the Goto Islands is remarkable for the manner in which the transverse lira? at the upper part of the whorl are produced at the varices |