MOLLUSCA OP THE ' CHALLENQEB ' EXPEDITION. 371 



tubercles ; on the body-vrhoii there are 5 or 6 of these, and 4 or 5 

 more on the base, which latter are sharper, higher, and less tuber- 

 cled ; below the suture is a short, bare, more or less flat shoulder ; 

 round the base of the pillar is a small sharp spiral, which is con- 

 tinuous with the upper edge of the canal ; the back of the pillar 

 is scored with very undulating lines, the scars of the old canal. 

 Colour chalky white. Spire rather short, more or less scalar, with 

 a convex outline. Apex blunt and rounded, consisting of nearly 

 4 largish, smooth, turbinate, convex whorls, of which the highest 

 is immersed. Whorls 7, stumpy, convexly cylindrical, flatly 

 shouldered above ; the last is tumid, with a very rounded, almost 

 inflated, and short base, on which, looked at from behind, the 

 point of the pillar is barely discernible, and the edge of the canal 

 does not project at all. Suture impressed, flatly marginated be- 

 low, very horizontal. Mouth -. a perfect oval all round, having no 

 angulation above, and though cut on the edge, yet being in its 

 sweep quite uninterrupted by the canal in front. Outer lip thin, 

 sharp, and patulous, very prominent but barely angulated at the 

 point of the base in advance of the pillar ; the canal is shallow 

 and open, with a very reverted funnel-edge. Inner lip concave, 

 with a thick, narrow, defined labial pad, running down the very 

 short pillar, whose point is sharp and expanded, but not flanged. 

 Operculum plain-edged, small, triangular, slightly subspiral, having 

 its apex terminal and bent in towards tlie left. H. 0*57. B. 0\33. 

 Penultimate whorl, height 0-14. Mouth, height 0-25, breadth 

 0-2. 



Mr. Marrat considers this species " very closely allied to iV. 

 WoodivarcU, Eorbes " and from this fact I have derived its name. 

 It is certainly liker that than any thing else I know, but is very 

 markedly distinct. That species has a conical spire, a long, narrow, 

 oblique body-whorl, with a short penultimate whorl, and a pro- 

 duced base, on which the pillar and canal-edge project promi- 

 nently ; the whorls are conical ; the suture is not marginated so 

 much by a bare shoulder below, as by a row of coarse blunt tu- 

 bercles ; its ribs and spirals are broad and square ; and their inter- 

 section produces square and very blunt tubercles, of which there 

 are about 30 in each whorl ; the outer lip is thick and toothed, 

 and the pillar is comparatively long. The absence of the crim- 

 son-brown bands of that species proves nothing ; for these might 

 quite naturally be absent in deep-sea specimens. 



Buccinum spinulosum, Phil. (Enum. ii. 191, xxvii. 13) seems 



LINN. JOUEN. — ZOOLOGT, VOL. XVI. 26 



