Pupa.} GASTROPODA. 521 



fine flexuous growth-lines. Colour white. Spire high, conic, nearly 

 as high as the aperture ; outlines nearly straight. Protoconch very 

 small, of 2 smooth whorls. Whorls 8, regularly increasing, flattish, 

 the body- whorl somewhat constricted in the middle ; base flattened. 

 Suture well impressed. Aperture very ' narrow and sharply angled 

 above, widened below, rounded and slightly effuse at the base. Outer 

 lip nearly straight, thin and sharp, faintly concave at the middle ; 

 basal lip regularly convex. ColumeUa with a stout oblique lightly 

 bifid plait, curving off to the basal lip ; separated from the convex 

 body-whorl by a distinct groove, which contains a low oblique fold ; 

 parietal wall with an inconspicuous ridge at its lower part. Inner lip 

 narrow, distinctly bounded, extending over the parietal wall. Oper- 

 culum unknown. 



Diameter, 8 mm. ; height, 20 mm. (type). 



Animal unknown. 



Type in the Dominion Museum, Wellington. 



Hab. Wellington (C. Holdsworth). 



Genus 3. LEUCOTINA. A. Adams, 1860. 



Leucotina, A. Adams, A.M.N.H. (3). v, I860, 406. Type : L. niphonensis, 

 A. Ad. Myonia, A. Adams, 18(50 ; not of Dana, 1847. Morioptygma, 

 A. Adams, 1851 ; not of Lea. 



Animal unknown. 



Shell ovate or elongated, usually rimate, thin, whitish, with convex 

 whorls ; sculptured with spiral punctured or subpunctate grooves ; 

 aperture rather small, oblong, produced and rounded below, the outer 

 lip simple or crenulated within ; columella with one small oblique 

 fold. 



Distribution. Most of the species are from the coasts of Japan 

 and China. 



1. Leucotina pura, A. Adams, 1855. Plate 22, fig. 25. 



Monoptyt/ma pura, A. Ad., in Thes. Conch., ii, 1855, 820, pi. 172, f. 33. 

 Leucotina pura, A. Ad., Man. Conch. (1), xv, 172. Pymmidella (Actceo- 

 pyramis) pura, A. Ad., Man. Conch. (1), viii, 314, pi. 74, f. 49. 



Shell rather solid, white ; whorls somewhat convex, spirally 

 grooved, intermediate lirpe smooth, grooves longitudinally striated. 

 Height, 9 mm. 



Type in the British Museum. 



Hab. New Zealand. 



I have not seen this shell. 



Genus 4. BULLINA, Ferussac, 1821. 



Bullina, Ferussac, Tabl. Syst., p. xxx, 1821. Type : Bulla scabra, Gmelin. 

 Bullinula (Beck), Swainson, "Malacology," 1840, 360. 



Shell oval, generally rimate, with short projecting spire, sinistral 

 apex, and large swollen body-whorl ; rather thin, spirally punctate- 



