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Show 1879.] MR. E. A. SMITH ON MOLLUSCA FROM JAPAN. 191 arcuate in outline in the middle ; columella straightish, but a trifle oblique, covered with a thin callosity terminating in a tubercle at its junction with the upper extremity of the labrum ; canal short, recurved. Length 16| millims., diam. 4$. Hab. Station 13. This slender species is well characterized by the brown bands, which are interrupted by the oblique ribs. The spiral striation is rather coarse. 20. DRILLA JAPONICA, Lischke. (Plate XIX. fig. 15.) Drilia japonica, Lischke, Japanische Meeres-Conch. i. p. 32. Hab. Station 27. Nagasaki (Lischke). The number of whorls is rather underestimated by Lischke, whose two specimens were mutilated at the apex, and had but six remaining volutions. The two examples in the present collection have eleven each, whereof the two nuclear ones are brown, smooth, and shining; the rest are a little constricted at the upper part, and then rather convex. Both of these shells and also a third in the Cumingian Collection display two or three transverse series of more or less distinct whitish granules ; a little below the middle of the last whorl they form an ill-defined band terminating in the white spot near the base of the labrum, which at this point has a second shallow sinus. 21. DRILLIA OBLIQUATA, Reeve, var. Pleurotoma obliquata, Rve. Conch. Icon. i. fig. 262. Hab. Station 21. •-1 (Peeve); Ceylon and Singapore {Mus. Cuming) ; var. from Persian Gulf (Colonel Pelly). The single shell of this species is not full-grown, and differs from the normal form in having a series of white dots on the ribs, in place of the band round the middle of the whorls. In describing this species, Reeve omitted to notice the presence of a transverse row of minute white dots situated on the costae a little below the middle of the body-whorl, the end or cauda of which is encircled by about five oblique lirae ; columella smooth, very slightly oblique, covered with a callosity terminating in a large tubercle at the upper end of the labrum, and aiding in forming the large rounded sinus; labrum thin at the edge, with a large swollen varix some distance behind, and with a second slight emargination near the base. 22. DRILLIA SUBOBLIQUATA. (Plate XIX. fig. 16.) Shell acuminately ovate, light brown, with a narrow white zone a little below the middle of the whorls, and a second, less distinct and subinterrupted one a little below the middle of the body-whorl : whorls 9, two nuclear smooth, convex, white, the rest concave at top, thin, convex at the sides, obliquely costated and finely transversely lirated* costae rather fine, 14 on the penultimate whorl, subnodose a little above the middle, where the concavity of the whorl commences, attenuated at the upper extremity, and becoming obsolete about the middle of the body-whorl; the spiral lirse are not conspicuous, rather |