REPORT ON THE GASTEROPODA. 631 



11. ActcBon (Buccinulus) cinereus, Watson (PI. XL VII. fig. 5). 



Aclceon (Buccinulus) cinereus^Watson, Prelim. Report, pt. 18, Journ. Linn.! Soc. Lond., vol. xvii. 



p. 288.C , 



July 29, 1874. Levuka, Fiji. 12 fathoms. 



Shell. — Strong, oblong, pointed at both ends, white, with three spiral bands of cindery 

 spots ; a high, conical, sharp-pointed spire, barely convex spirally striated whorls, a slight 

 suture, a long narrow mouth emarginate in front, and a strongly twisted double-toothed 

 pillar. Sculpture : Longitudinals — there are fine, approximate, hair-like, obsolete lines of 

 growth. Spirals — there are shallow square-cut furrows formed of small contiguous oval pit- 

 marks : of these there are on the penultimate whorl about 8, on the body about 25 ; the 

 flat raised surface of the shell between is from one to three times as wide as the furrows. On 

 the first two whorls these furrows are wanting ; on the third whorl only one appears close 

 below the suture. Colour porcellanous and glossy white, with three narrowish grey bands, 

 made up of small, cindery, somewhat longitudinally arranged spots : these bands, absent 

 on the earlier whorls, first make their appearance on the fifth, from which to the seventh 

 there is only one band immediately above the suture ; its upper edge is somewhat 

 indefinite, flame-like expansions of it extending upwards here and there. On the body 

 another similar band occurs at the periphery ; and a third is on the base, originating just 

 above the upper pillar-tooth ; the two latter are more defined than the first : the cindery 

 spots forming these bands are entirely absent in the furrows. Spire short and conical. 

 Apex small and sharp, the minute tip being distinctly prominent and not in the least 

 twisted or inverted. Suture slight, being scarcely impressed ; in the earlier whorls it is 

 very horizontal, but latterly it is oblique. Mouth long, narrow, curved-in toward the axis 

 of the shell, sharply pointed above, channelled in front of the pillar point. Outer lip 

 sinuated above ; the lip-edge is roundly prominent at the periphery, where it is patulous, 

 hardly curved, and in direction oblique. On the base it is extremely patulous, a little 

 pointed, very curved and retreating ; at the point of the pillar it is very strongly emargi- 

 nate. Inner lip : the glaze on the body is not very thick, and has a defined edge whicli 

 does not extend beyond the mouth ; near the point of the base it is swelled into a small, 

 narrow, blunt, oblique tooth, and at the point of the pillar it forms a very strong, twisted, 

 oblique double tooth which dies out very speedily, and does not connect itself with the 

 mouth-edge; the furrow above the double tooth is very strong. H. 0*4 in. B. # 14. 

 Penultimate whorl, height 0-06. Mouth, height 0'28, breadth 0*08. 



This pretty little species is very like Actceon (Buccinulus) glabcr (Reeve), but lias a higher and sharper 

 spire, a much feebler, less channelled suture, and lacks the sculpture on the upper whorls, which in 

 Actceon (Buccinulus) glabcr are harshly pitted up to the very apes. These three smooth apical 

 whorls are very peculiar, and distinguish the Challenger species from Actocon (Buccinulus) strigosus 

 (Gould), from Japan, the coarse apex of which is strongly sculptured. In that species, too, the upper 



