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Show 1879.] MR. E. A. SMITH ON MOLLUSCA FROM JAPAN. 189 by about fourteen of these transverse liroe, whereof nearly all, with the exception of a few at the base, are more or less granular on the plica?. ^ Aperture equalling about two fifths of the entire length of the shell, light brown ; fissure in the lip, below the suture, and above the nodulous angle, broad and moderately deep ; labrum thin, prominent in the middle, with a very shallow sinuation near the base, smooth and not Urate within ; columella callous at the base; canal very short. Operculum elongate, rather acuminate at both ends ; nucleus terminal. Length 18*- millims., diam. 6\. Hab. Station 29. Also China Seas (Mus. Cuming). The style of sculpture of this species is considerably like that of P. metcaffei, Angas. However, the whorls are fewer, the nuclear one being larger, the last proportionally broader. The few lirations within the lip of that species are wanting in the present one ; and the tubercles around the middle of the whorls are less oblong than in P. metcalfei. \7. DRILLIA PERADMIRABILIS. (Plate XIX. fig. 12.) Shell robustly fusiform, whitish or yellowish white, stained with brown beneath the suture, and obscurely banded with the same colour about the middle of the last whorl, spotted and dotted with a lighter tint irregularly over the rest of the surface, but leaving a plain white zone at the angulation of the whorls and a second just above the median brown one on the last whorl; apex white. Volutions 8^-; one and a half nuclear smooth, globose; the rest concavely sloping above, then obtusely angled about the middle, rounded, and much contracted beneath, obliquely plicated and spirally lirated ; plica? rounded, oblique, but little elevated, more or less obsolete at the upper part. Transverse lira? most beautifully and finely granulated, separated by deep-cut stria? of different sizes, those in the concavity of the whorls subequal and finer than those beneath, which, again, are not all of uniform tenuity ; on the penultimate whorl thev number about 20, and on the last as many as 55 ; those around the* lower part of the last whorl are pretty regularly alternately larger and small, the latter being the more granulous. The body-whorl is contracted at the lower part, and is destitute of the plicae on about a third of its extent near the lip. Aperture together with the canal a little less than half the length of the shell, brownish within, with a single white central zone, and a white patch parallel with the margins of the lip, corresponding to a stout exterior sub-maroinal varix, and stained with dark brown between this and the thin°prettily crenulated edge of the labrum, which is curved and very shallowly sinuated towards the base, and finely sulcated within, but at the edges ; sinus deep, at the suture ; columella a little oblique and tortuous, whitish, without markings or callosity, only furnished with a small whitish tripartite tubercle at the upper part, just a little below the sinus, and connected with the suture by a thin callus. Length 23 millims., diam. 7\. Hab. Stations 1 and 32. |