SUTER : ON MOLLUSCA PROM NEW ZEALAND. 39 



finely spirally striate, and the remaining three whorls axially plicated 

 and slightly angled at the periphery ; the next seven whorls have two 

 equal keels, but the later whorls have a fine spiral thread intercalated 

 between them ; all these keels are crossed by about fifteen axial 

 riblets, the points of intersection raised into rounded gemmules ; 

 a fourth suprasutural keel below the periphery of the last whorl, and 

 two upon the base. Colour of protoconch light brown, the other 

 whorls white with a central fulvous spiral band on the lower whorls; 

 base fulvous. Spire high, conical ; outlines slightly convex. Proto- 

 conch high, of five convex, subangled whorls, the nucleus globose. 

 Whorls about 15, regularly increasing, flattish ; base flat. Suture 

 impressed, sometimes lightly margined by the suprasutural keel. 

 Aperture vertical, subquadrate, with a short, straight, and narrowly 

 open canal below, its base slightly emarginate. Outer lip thin, sharp, 

 sinuated by the spiral sculpture. Columella vertical, slightly arcuate, 

 ending in a point upon the inner margin of the canal. l)iam. 1*6, 

 height 4-8 mm., shell of 15 whorls. 



Hah. — Near the Snares (type) and Bounty Islands, in 50 fathoms 

 (Capt. Bollons). 



This species is nearly allied to T, innotahilis^ Hedley, from Sydney 

 Harbour, which, however, is brown, the gemmules white and more 

 numerous, and the spur of the basal lip crosses the pillar. Type in 

 my collection. 



50. Triphoea ltjtea, n.sp. PI. Ill, Fig. 50. 



Shell small, lightly polished, fragile, slender. Sculpture : the 

 protoconch is smooth, with two keels, the lower of which is much 

 more prominent ; the adult whorls have three keels, the uppermost 

 a little narrower, these are crossed by about sixteen axial riblets, with 

 deep and slightly narrower interstices between them ; the crossing- 

 points produced into rounded, not very prominent nodules ; on the last 

 whorl there is a fourth smooth suprasutural keel and two upon the 

 base. Colour light orange, white towards the apex, old dead shells 

 are dull white. Spire subulate ; outlines straight. Protoconch con- 

 sisting of three whorls, the nucleus pointed and slightly oblique. 

 Whorls about 1 0, regularly increasing, lightly convex ; base moderately 

 convex. Suture deep, sometimes margined by the suprasutural thread. 

 Aperture vertical, ovate, angled above, produced below into a straight, 

 short, and open canal, but faintly emarginate at the base. Outer lip 

 sharp, slightly sinuate. Columella perpendicular, narrowed below to 

 a point. Diam. 1"8, height 5*5 mm., shell of 10 whorls. 



Hob, — Near the Snares, type, and Bounty Islands, in 50 fathoms 

 (Capt. Bollons). Type in my collection. 



51. Turritella chorbata, n.sp. PL III, Fig. 51. 



Shell small, subulate, moderately solid, spirally lirate, white. Sculp- 

 ture : the first one and a half whorls are smooth, the next has three, 

 the following four, the fourth five, and all the succeeding whorls six 

 subequidistant, prominent, flatly rounded cords, the suprasutural cord 

 being less distinct ; on the last whorl each of the furrows between the 



