Oliver. — Mollusca of the Kermadec Islands. 533 



sutural line distinct, body-whorl about one-third the length of the shell. 

 Aperture narrowly ovate. Inner lip thick, narrowing posteriorly, extending 

 right back to the suture with a distinct groove between it and the body- 

 whorl. Sculpture : Shell smooth, a spiral line above the sutural line, 

 dolour white, transparent, the internal structure being clearly visible through 

 the shell. 



Height, 4-7 mm. Diameter, 1 mm. 



Habitat. — A few dead shells dredged on gravelly bottom near Sunday 

 Island. 



Subularia perspicua n. sp. Fig. 27. 



Description oj Type Specimen. — Shell subulate, right side straight, left 

 .side nearly straight from apex to periphery of body-whorl, which then 

 contracts towards the anterior end. Apex acute. Whorls 8, flat, suture 

 scarcely distinct, body-whorl a little less than half the length of the shell. 

 Aperture narrowly ovate. Sculpture : Shell smooth, a faint spiral line 

 visible above the sutural line. Colour : Protoconch white. Spire yellowish- 

 white, suture darker, the body-whorl white, faintly irregularly blotched 

 with yellowish. A diagonal yellowish band across the columella anteriorly. 

 Semi-transparent, the internal structure being visible through the shell. 



Height, 3 mm. Diameter, 0-8 mm. 



Habitat. — Dead shells dredged on gravelly bottom near Sunday Island. 



Cithna wallacei n. sp. Fig. 29. 



Description oj Type Specimen. — Shell thin, glassy, ovate, apex blunt. 

 Whorls 5, rounded, suture deeply impressed. Aperture broadly ovate, 

 peristome thin. A narrow umbilical groove between the inner lip and the 

 body-whorl. Sculpture: The whole shell quite smooth. Colour : Proto- 

 conch white. Adult whorls glassy, variegated with brown blotches. On 

 the upper portion of the whorls these take the form of irregular brown 

 diagonal bands, which -at first slant forwards, then turn at right angles as 

 narrow bands. The lower part of the spire- whorls with a few small brown 

 patches. A clear peripheral band on the body-whorl, but narrow axial 

 brown stripes round the base. 



Height, 1-7 mm. Diameter, 1 mm. 



Habitat. — Dead shells common in dredgings in 10 m. to 30 m. off Sundav 

 Island. 



Scalenostoma suteri n. sp. Fig. 30. 



Description of Type Specimen. — Shell thin, turreted, sides straight, 

 apex bluntly acuminate. Whorls 9, angular, sloping away on each side 

 from the upper keel. Suture impressed. Aperture narrowly ovate, pro- 

 duced and truncated in front. Outer lip thick. Inner lip thick, a callosity 

 at its anterior end, and a slight umbilical groove between it and the body- 

 whorl, both lip and groove being continuous right back to the suture. 

 Sculpture : Protoconch of 1 whorl, smooth. On the succeeding whorls 

 are two high spiral keels, the upper of which is the higher. The ends of 

 the spirals appear as two prominent projections on the outer lip. Entire 

 surface of shell quite smooth. Colour white, translucent. 



Height, 4-2 mm. Diameter, 1-2 mm. 



Habitat. — Dead shells abundant in dredgings on gravelly bottom in 

 10 m. to 30 m. off Sundav Island. 



