Odostomia.] GASTROPODA. 345 



effuse below. Outer lip solid, sharp, somewhat convex. ColumeUa 

 vertical, with a rather strong plait above, slightly convex below. 

 Inner lip rather broad and strong, angularly produced below, and 

 forming a distinct callosity over the parietal wall. Operculum un- 

 known. 



Diameter, 1-8 mm. ; height, 3-7 mm. (specimen of 6 whorls). 



Animal unknown. 



Type, from the Pliocene, in the Canterbury Museum, Christchurch. 



Hob. Whangaroa Harbour (C. Traill) ; Hohoura Bay (R. Buddie) ; 

 Takapuna (H. S.) ; near Little Barrier Island, in 20 fathoms (R. H. 

 Shakespear) ; Cook Strait ; Queen Charlotte Sound, in 16 fathoms ; 

 Taumaki Island, in 10 fathoms ; Stewart Island, in 18 fathoms ; Snares 

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

 (Iredale). 



Fossil. Miocene and Pliocene. 



Subgen. 4. MENESTHO, Moller, 1842. 



Menestho, Moller, Ind. Moll. Groenl., 1842, 10. Type : Turbo albulus, Fabr. 

 Pyramis, Couthouy, 1839 ; not of Schumacher, 1817. 



Shell having moderately well-developed spiral cords, usually equally 

 spaced, and present between the sutures and on the base ; axial ribs 

 indicated by faint threads between the spiral sculpture ; not um- 

 bilicated. 



20. Odostomia sabulosa, Suter, 1908. Plate 17, fig. 9. 



Odostomia (Menestho) sabulosa, Suter, T.N.Z.I., xl, 1907 (1908), 367, pi. 29, 

 f. 15. 



Shell small, elevated, spirally striate, thin, faintly shining, im- 

 perf orate. Sculpture consisting of flattish spiral cords, 7 on the pen- 

 ultimate whorl, and extending over the base ; interstices slightly 

 narrower than the cords, ornamented with numerous equidistant axial 

 threads. Colour white. Spire narrowly conic, twice the height of the 

 aperture ; outlines straight. Protoconch heterostrophe, of 1 whorl, 

 smooth, globular. Whorls 6, regularly increasing, but faintly con- 

 vex ; base flattish. Suture canaliculate, but not very deep. Aperture 

 subvertical, oval, angled above, narrowly rounded and effuse below. 

 Outer lip slightly convex. ColumeUa vertical, almost straight, the 

 columellar plait small and deep within the aperture. Inner lip narrow, 

 not reflexed, forming a very thin glaze on the parietal wall. Operculum 

 unknown. 



Diameter, 1-8 mm. ; height, 4-2 mm. 



Animal unknown. 



Type in my collection. 



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

 (Captain Bollons). 



