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Show 190 MR. E. A. SMITH ON MOLLUSCA FROM JAPAN. [Feb. 1 8, The example of this most wonderfully sculptured species from the latter locality is a little darker in colour than the other. The marking on the upper part of tbe whorls and the bands on last volution are of a dull purplish brown. 18. DRILLIA NAGASAKIENSIS. (Plate XIX. fig. 13.) Shell elongate, turreted, luteous. Whorls 9; two apical brown, smooth, convex ; the rest keeled above at the suture, somewhat excavated beneath the carina, then convex at the sides, which contract inwards towards the base ; they are closely ribbed and transversely grooved ; the costae are rounded, oblique, sixteen on the penultimate volution, and do not quite attain to the suture, but become obsolete in the sloping concavity above ; the spiral ridges between the sulci number eight on the penultimate whorl; of these the three uppermost are very fine and situated in the concavity above, the rest are much coarser and subnodulous on the costae ; the latter are attenuated interiorly on the last volution, and become obsolete a little below the middle; one of them near the tip is considerably enlarged in the form of a varix ; the spiral sulcation also extends over the entire surface. Aperture rather small, occupying a third of the entire length, light brown within ; labrum thin, much produced and arcuated at the middle, broadly and deeply notched a little below the suture, and with a second shallow sinuation near the base ; columella suberect, smooth, coated with a thin callosity, terminating above at the sinus in the form of a tubercle; canal short, broad, but little recurved. Length 17 millims., diam. 5. Hab. Station 26. This species has much the appearance of P. pyramidula of Reeve (Con. Icon. fig. 260). The whorls, however, are more convex at the sides and broader, and the lip is different. The costa? are less numerous on the upper whorls than on the lower one, and they gradually become finer as the shell increases, so that those on the last volution are more slender than those on the upper part of the spire. 19. DRILLIA LONGISPIRA. (Plate XIX. fig. 14.) Shell slender, fusiform, whitish, banded with brown between the costae ; zones two in number on the upper whorl-one a little below the upper suture, and the other at the base. Whorls 10, the two first smooth, convex, the rest somewhat excavated above, obtusely angled at the middle, obliquely costate and spirally striated ; ribs about six on a whorl, oblique, subnodose at the middle, attenuating at both extremities and not reaching to the upper suture ; transverse stria? rather coarse, minutely decussated by the flexuous lines of growth ; last whorl with a third brown zone below the middle. Aperture whitish within, ornamented with the three exterior bands, occupying about four elevenths of the entire length of the shell; sinus deep, situated in the upper part of the lip, which is thin, has a second shallow sinuation near the base, and is much produced and |