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Show 1879.] MR. E. A. SMITH ON MOLLUSCA FROM JAPAN. 195 29. DRILLIA SUBAURIFORMIS. (Plate XIX. fig. 23.) Shell elongate, narrow, yellowish white, banded at the suture with purplish brown, and the lower half of the body-whorl of the same colour. Whorls 10; the two or three apical ones smooth, convex; the rest convex, sometimes exhibiting a slight angulation at a little distance from the top, obliquely costate and spirally Urate; costa? about fourteen on a whorl, rounded, varying somewhat in thickness in dfferent specimens ; lirae also subject to variation in number and stoutness, usually five or six in number, but sometimes as many as eight; on crossing the costae they are a little thickened, producing a somewhat granulous effect; on the last whorl there are from eighteen to twenty lira?, whereof those around the base are smooth and simple, as they do not cross the rihlets, which terminate a little below tbe middle of the whorl. Aperture varying in length in proportion to that of the entire shell, sometimes occupying a little more and in other specimens a trifle less than one third of it; labrum stained with brown, thickened exteriorly, denticulated or Urate within, and widely sinuated just below the suture; columella transversely Urate (this character is only apparent in quite adult shells, and then not obviously) ; canal short, narrow. Length 9| millims., diam. 2|. Larger specimens are 12^ long and 3J broad. Hab. Station 21. This species has for its nearest ally Defrancia tecta, Dunker. It is, however, more elongate, and apparently, judging from Dunker's description and figure, differently coloured. The small and larger forms of this species agree in all respects with the exception of size. 30. DRILLIA TEXTA, Dunker. Defrancia texta, Dunker, Malakozool. Blat. 1859, vol. vi. p. 225 ; Moll. Japonica, p. 2, pi. i. fig. 19. Hab. Station 22. Little can be added to the excellent diagnosis of this species given by Dunker. The number of whorls in the specimen which I consider belongs to this species, from the above locality, is eight. The two nuclear are glassy, smooth, and convex; the rest are convex, with a slight tendency to angulation or shouldering at the upper part. Besides the colouring noticed by Dunker, the whorls are stained beneath the suture with light brown, in which respect it agrees with the preceding species (subauriformis), and in fact might almost be considered an extreme variety of it. 31. DRILLIA GRACILENTA, var., Reeve. (Plate XIX. fig. 24.) Pleurotoma gracilenta, Reeve, Conch. Icon. sp. 114. Var. = P . contracta, Reeve, I. c. sp. 116. ya r =p.fUsoides, Reeve, I.e. fig. 349. Shell narrow, subfusiform, elongate, whitish, banded at the suture and around the middle and base of the last whorl with orange-red. Whorls 7, the first two smooth, very convex, shining; the rest |