248 GASTROPODA. [Pectinibranchia. 



Diameter, 1 mm. ; height, 2-7 mm. 



Animal unknown. 



Type in my collection. 



Hob. Snares, in 50 fathoms (Captain Bollons). 



6. Cerithiopsis sarissa, Murdoch, 1905. Plate 1-1, fig. 21. 



Cerithiopsis sarissa, Murdoch, T.X.Z.I., xxxvii, 1904 (1905), 221, pi. 7, 

 f. 8, 9. 



Shell small, narrow, tapering to a slender point, with spiral and 

 slightly weaker axial riblets. Sculpture : Apical whorls smooth, the 

 succeeding with 3 spiral and numerous slightly oblique longitudinal 

 riblets forming rows of gemmules ; on the lower whorls the suture 

 is margined with a minute beaded riblet ; this gradually strengthens, 

 and on the last whorl forms a fourth spiral, with the headings less 

 marked than on the rows immediately above ; beneath this a shallow 

 groove, thence gently curved to the columella, and curving obliquely 

 around the latter is a minute ridge which terminates at the canal ; 

 of the 3 spiral rows of gemmules the 2 lower are the largest, and about 

 equal to the interspaces ; on the last whorl there are about 17 to 20 

 gemmules per row; they are somewhat oval, shining, and variously 

 coloured. Colour light or dark brown, somewhat shining, the suture 

 of the lower whorls, fourth spiral on the last, and base dark-purplish ; 

 gemmules on the last whorl light brown, pale chestnut, and purple. 

 Spire high and narrow, about three times the height of the aperture ; 

 outlines nearly straight. Protoconch small, of 3J smooth convex 

 whorls, nucleus oblique. Whorls 11-12, flatly convex, regularly 

 increasing ; base slightly concave, smooth. Suture deep. Aperture 

 ovate, angled above, with a very short, slightly oblique, and deeply 

 notched canal. Outer lip thin and sharp, angled at the junction 

 with the basal lip. Columella short, nearly straight, inflexed towards 

 the canal. Operculum unknown. 



Diameter, 1-8 mm. ; height, 6-25 mm. 



Animal unknown. 



Type in the Dominion Museum, Wellington. 



Hab. Whangaroa Harbour, type (C. Traill) ; Kawhia Harbour, 

 immediately within the entrance, on rocks at low tide (R. Murdoch) ; 

 Plimmerton, Cook Strait ; off Otago Heads, dredged (A. Hamilton) : 

 Bounty and Snares Islands, in 50 fathoms (Captain Bollons) ; Banks 

 Peninsula, under stones and on seaweeds (Iredale). 



7. Cerithiopsis styliformis, Suter, 1908. Plate 14, fig. 22. 



Cerithiopsis styliformis, Suter, P. Mai. S., viii, 3(5, pi. 3, f. 43. 



Shell small, acicular, almost cylindrical, rather thin. Sculpture 



consisting of 3 cinguli, the uppermost close to the suture and less 



elevated ; a fourth smooth kee: on the last whorl, continued from the 



suture ; crossed by straight axial riblets, about 15 on the last whorl ; 



