256 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



rounded fold ; inner lip spreading narrowly and thinly over the lightly 

 convex parietal wall. Diam. 2, height 3-8 mm. 



Sab. — Lyall Bay, Cook Strait (A. Hamilton). Type in my collection. 



ToRNATiNA Chaelott^, n.sp. PL XI, Fig. 10. 



Shell small, oblong, thin, smooth, with projecting nucleus and 

 distinct columellar fold. Sculpture consisting of fine, curved growth- 

 lines only. Colour white. Spire depressed, almost flat, the nucleus 

 only rising above the last whorl. Protoconch papillary, tilted, 

 sinistral. Whorls 4, angled above, the last nearly as high as the 

 shell, angularly rounded above, slightly narrowed at the base, sides 

 straight. Suture channelled. Aperture high, narrow above, widened 

 below. Outer lip thin and sharp, its edge arched forward at the 

 middle, narrowly convex above, broadly and regularly rounded at the 

 base. Columella vertical, slightly arcuate, with a distinct broad fold 

 below, which has a slightly impressed median groove ; at the junction 

 with the parietal wall a blunt angle is formed ; inner lip thin, 

 indistinct. Diam. 1-6, height 3"1 mm. 



Sab. — Queen Charlotte Sound, in 16 fathoms (Captain J. Bollons). 

 Type in my collection. 



ToRNATiNA Cookiana, n.sp. PI. XI, Fig. 11. 



Shell small, oblong, with slightly raised spire, thin, white, smooth. 

 Sculpture consisting of very tine dense growth-lines only. Colour 

 white. Spire raised, conoidal, one-fifth to one-sixth the height of the 

 aperture. Protoconch papillary, tilted, sinistral. Whorls 3^-, slowly 

 increasing and descending, sharply angled above, the last very high, 

 cylindrical, rounded at the base. Suture channelled. Aperture high, 

 narrow above, considerably widened below. Outer lip moderately 

 strong, sharp, narrowly rounded above, regularly convex below, the 

 median part of the edge arched forward. Columella short, oblique, 

 with a slight fold, forming no distinct angle at the junction with the 

 lightly convex parietal wall ; inner lip spreading as a thin callosity 

 over the latter. Diam. 1*5, height 3'2 mm. 



Sab. — Lyall Bay, Cook Strait (A. Hamilton). Type in my 

 collection. 



ToRNATINA DECAPITATA, n.Sp. PJ. XI, Fig. 12. 



Shell small, sub -cylindrical, truncated at the top, ver}^ thin, vitreous, 

 smooth. Sculpture formed by exceedingly fine and dense curved 

 growth-lines. Colour white. Spire depressed, the nucleus not pro- 

 jecting above the body-whorl. Protoconch large, papillary, tilted. 

 Whorls 3, angled above, the last being the height of the shell, straight 

 at the middle, narrowed and rounded at the base. Suture canaliculate. 

 Aperture vertical, as high as the shell, narrow above, widened below. 

 Outer lip thin and sharp, narrowly rounded and somewhat ascending 

 above, slightly advancing at the middle, regularly convex at the base. 

 Columella vertical, lightly arcuate, twisted into a not very distinct 

 fold, forming a prominent angle with the parietal wall, which is convex 

 at its lower part, almost straight above. Diam. 1'5, height 2-8 mm. 



