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Show 79.] MR. E. A. S M I T H O N M O L L U S C A FROM JAPAN. 193 covered with a callosity, tuberculated above at the suture; canal very short and a little recurved. Length 10 millims., diam. 3^. Hab. Station 26. This species is remarkable for the abrupt and acute termination of costa? above. 25. DRILLIA INTERMACULATA. (Plate XIX. fig. 19.) Shell shortly fusiform, shining, subpellucid, white, with two transverse series of brownish-yellow dots between the ribs on the upper whorls and four on the last. Whorls 7, two nuclear ones simple, smooth, convex, the others concave at the upper part and convexish beneath, ornamented with oblique rounded costa?, which become obsolete above, not attaining to the suture, twelve in number on a whorl; those on the body-whorl less strongly developed, especially near the labrum, and not extending downwards below the middle. Aperture occupying about two fifths of the entire length ; sinus deep, lower sinuation slight; columella arcuate, with a tubercle at the suture ; canal very short, wide, and not recurved. Length 10^ millims., diam. 3J. Hab. Station 31. The painting of this pretty shell is very characteristic ; the uppermost series of dots is situated between the ribs just about where they become obsolete, the second row at the middle of the body-whorl, and the two following at equal distances below. 26. DRILLIA HUMILIS. (Plate XIX. fig. 20.) Shell fusiformly ovate, chocolate-brown at the base of the whorls and lighter above, indistinctly banded with white round their middle, the band being most conspicuous on the ribs, which are also white at their upper extremities. Whorls 8 ; two apical smooth, convex, rather large, the rest considerably excavated above and rather bulgingly convex inferiorly and obliquely ribbed ; costa? nine in number on the penultimate whorl, subobsolete in the concavity at the upper part of the whorl, and again nodulous at the suture ; last whorl with a transverse series of white dots on the costae a little below the middle ; ribs gradually attenuating downwards, not extending quite to the extreme base; the latter, or cauda, is sculptured with about six oblique fine grooves. Aperture small, brown, white at the sinus and at the termination of the series of dots a little below the middle; sinus large, deep, rounded, in the concavity, lower sinuation slight; lip thin, arcuate, produced, with a large tumid varix at a little distance from the margin ; columella a trifle oblique, coated with a smooth brown callus, adjoining the suture in the form of a tubercle; canal very short, broad, and not recurved. Length 9 millims., diam. 3^. Hab. Station 5. -••-,•«, This species at a first glance has the appearance of a dwarfed D. obliquata (Reeve), but when closely .examined proves specifically distinct. It has fewer volutions, whereof the apical ones are propor- PROC. ZOOL. Soc-1879, No. XIII. 13 |