328 EEV. R. BOOG WATSON 01s THE 



St. 141. Dec. 17, 1873. Lat. 34° 41' S., long. 18° 36' E. 



25 miles S.S.E. from Cape of Grood Hope. 98 fms. Sand and 

 gravel. Bottom temperature 49°'5 E. 



St. 142. Dec. 18, 1873. Lat. 35° 4' S., long. 18° 37' E. 

 45 miles S.S.E. from Cape of Grood Hope. 150 fms. Sand. 

 Bottom temperature 47° E. 



Shell. — Eusiform, thin, with a rather high subscalar spire, 

 a small rounded apex, a very long base, a slightly thickened, 

 reverted, and toothed outer lip, a long narrowish mouth, a twisted 

 many-toothed pillar, and an expanded inner lip. Sculpture. Lon- 

 gitudinals — there are on the last whorl about 70 riblets or flatly 

 rounded threads following the lines of growth, which last roughly 

 and closely score the whole surface. Spirals — there are from 30 

 to 40 rather higher and broader threads covering the whole 

 surface ; those below the suture are slightly stronger than the 

 others ; the first in pai-ticular is so, and is followed by a deeper 

 furrow ; all these iu crossing the longitudinals tend to rise into 

 small tubercles : below the suture is a very small flattened shoulder 

 with an outward droop ; this on the upper whorls is slightly ex- 

 cavated. The whole surface is fretted with fine microscopic 

 scratches. Colour pale ashy brown, glossy. Spire subscalar, 

 high, its height being to its breadth in the proportion of 13 to 6. 

 Apecc small, eroded. WJiorls 8, flatly convex, very slightly shoul- 

 dered below the suture. Suture very oblique and strongly 

 marked. Mouth very small for the genus, long and narrow, with 

 a small open canal in front. Outer lip very slightly sinuated 

 and ascending above, narrowly reversed, and a little thickened, 

 with many close-set, equal, short, narrow teeth; at the point it 

 is very slightly sinuated and patulous, but not reversed. Inner 

 lip spreads in a broad thin glaze across the body ; it is slightly 

 oblique, hardly concave, a little twisted and bent back in front, 

 with (about the middle) 8 to 10 larger or smaller teeth somewhat 

 irregularly distributed. H. 3*8. B. 1*5. Penultimate whorl, 

 height 0-6. Mouth, height 2-6, breadth 0'75. 



This interesting species has hitherto been known only in the 

 solitary type specimen obtained by SirE. Belcher inH.M.S. ' Sama- 

 rang,' 1843, off" the Cape at a depth of 132 fms., and described by 

 A. Adams and L. Eeeve in the Mollusca of the Expedition. 

 That specimen being a very young shell, a redescription from 

 the specimens of the ' Challenger ' was necessary. Of these 

 there are three — one, the largest, described above ; the second 



