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Show 196 MR. E. A.SMITH ON MOLLUSCA FROM JAPAN. [Feb. 18, longitudinally and a trifle obliquely costate and transversely Urate, sloping at the upper part and a little convex below; the costae on the upper whorls are coarser and fewer than on the body-whorl, which has about twenty, attenuated below, and not quite attaining to the base : the spiral lira? are four in number on the upper whorl, two principal ones with a smaller one between them around the middle, and the fourth below at the suture ; on the body-whorl they number about sixteen. The entire surface under the microscope is seen to be minutely cancellated by the lines of growth and excessively slender spiral striae. Aperture narrow, almost half the length of the shell, white within; lip thin at the edge, thickened both interiorly and without, and blotched with orange-red on both sides, the spots being the terminations of the transverse bands, without teeth or lira? ; columella smooth, almost rectilinear, but inclining a little obliquely; sinus well defined, semicircular, situated in the labrum close to the suture. Length 8 millims., width 2\. Hab. Station 18. Philippine Islands (Cuming). The specimen above described resembles almost exactly the variety contracta, the figure of which in the ' Conchologia Iconica' is not at all good, the whorls being much too angular and the spiral line scarcely traceable. 32. DEFRANCIA GRACILISPIRA. (Plate XIX. fig. 25.). Shell slender, fusiform, dirty yellowish, faintly banded with livid brown between the costae near the top of the whorls, and stained with the same colour from the middle of the last whorl downwards. Whorls 12 ; three nuclear convex, minutely reticulated with raised obliquely crossing lines ; the rest very convex, with a slight concavity, sculptured with distinct arcuate short raised lines beneath the suture, also bearing slender oblique costella? (13 on the penultimate whorl), which are crossed by transverse lira? ; these are four to six on the upper whorl, nodulous on the riblets ; nodules compressed, subacute ; last whorl convex above, slender below the middle ; at this point the costellae are becoming obsolete ; and thence downwards the whorl is transversely obliquely Urate ; the lira? are simple, subequal, and rather close together. Aperture narrow, occupying about four elevenths of the entire length ; labrum imperfect, probably incrassated as in the European D. gracilis of Montagu; sinus at the suture; columella obliquely tortuous ; canal rather long, narrow, somewhat recurved. Hab. Station 27. The slender form, the delicate riblets, the shallow excavation at the upper part of the volutions, and their convexity are the principal distinctive characters of this interesting shell. It belongs to the genus Defrancia as restricted by Jeffreys for species with the sinus in the suture and with the apical whorls minutely reticulated. 33. DAPHNELLA? FUSCOBALTEATA. (Plate XIX. fig. 26.) Shell ovately fusiform, yellowish, pale violet or lilac towards the |