REPORT ON THE GASTEROPODA. 



375 



smooth whorls. Whorls 8, of very slow increase, short, the last very small, being scarcely 

 at all more tumid than the rest, and having a short conical base ; the snout is very short ; 

 there is a small constriction round the top of each whorl ; and the profile-lines are faintly 

 angulated, but are very slightly convex. Suture fine, but well marked, being a little 

 impressed and defined by the slight swelling round the top of the inferior whorl ; the 

 superior whorl scarcely contracts towards it. Mouth pear-shaped, with a slight angula- 

 tion at the top and a very short canal below. Outer lip evidently thickened, but chipped 

 in the only specimen present ; it runs with an almost continuous slightly convex curve 

 from the body to the canal, where the curve is slightly and shortly flattened ; the sinus is 

 very shallow and open. Inner lip thickened and raised on a small but defined callus ; it 

 runs straight across the body to the base of the short, thick pillar, down which it proceeds 

 direct and parallel to the slightly prominent callus-edge on the left ; the point of the pillar 

 is rounded and blunt, and hardly advances to the end of the snout, the canal-edge being 

 thick and rounded, cut off obliquely upwards, but not at all reverted. H. 0*3 in. B. 0"1. 

 Penultimate whorl, height 003. Mouth, height 0*1, breadth 0'06. 



This is an extremely peculiar little shell, remarkable in its narrow cylindrical and compact form, 

 its sculpture, and its slight silvery sheen, from which last feature its name is derived. 



6. Clionella lophoessa, 1 Watson (PL XXII. fig. 9). 



Pkurotoma (Drillia) lophoessa, Watson, Prelim. Report, pt. 11, Journ. Linn. Soc. Lond., vol. xvi. 



p. 252. 



Station 120. September 9, 1873. Lat. 8° 37' S., long. 34° 28' W. Pernambuco. 

 675 fathoms. Eed mud. 



Var. platia. 2 



Station 122. September 10, 1873. Lat. 9° 5' S., long. 34° 50' W. Pernambuco. 

 350 fathoms. Red mud. 



Shell. — High, narrow, conically cylindrical, with a blunt round apex, a contracted 

 conical base, and shortish snout ; it is angulated, and the angulation crested with little 

 conical points ; there are feeble ribs and an impressed suture. Sculpture : Longitudinals 

 — there are 12 to 13 ribs on each whorl from the second regular whorl onwards ; but they 

 are in no way connected from whorl to whorl ; they originate below the sinus-area in a 

 little sharpish rounded nodule, crowning an angulation of the whorl at that point ; they 

 run forward direct but obliquely to the inferior suture ; on the base they die out with 

 a backward curve, and do not reach the snout ; in the sinus - area above the nodule 

 they are just traceable in a slight irregularity of the surface and a minute nodule 

 at the suture ; the lines of growth are quite independent of the ribs, and are very faint 

 1 \o<f>6u( t crested. 2 wXaru?, broad. 



