818 Transactions. — Geology. 



Sigaretus undulatus. PI. xviii., fig. 11. 



Shell sub-globose, smooth, ornamented with delicate, close, undulating 

 spiral lines. Whorls 4-§-, the first 2£ polished. Aperture ovate, produced 

 anteriorly ; columella curved, the callus completely covering up the 

 umbilicus. 



Length, '82 inch ; breadth, -82 inch. Aperture, length, *65 inch ; 

 breadth, -47 inch. 



Locality. Wanganui and Petane. 



Sigaretus (Naticina) cinctus. PI. xviii., fig. 12. 



Shell globoso-ovate, smooth, closely spirally grooved, the grooves 

 shallow. Whorls 4^, the first three without spiral markings. Suture ex- 

 cavated. Aperture oblong ; columella nearly straight ; umbilicus widely 

 open. 



Length, -6 inch ; breadth, # 55 inch. Aperture, length, *5 inch ; breadth, 

 •28 inch. 



Locality. Wanganui. 



Eulima micans. 



Shell minute, subulate, highly polished, slightly curved to the right. 

 Whorls 6, flattened, suture almost obliterated, enamelled. Aperture oval, 

 rounded hi front and pointed behind, the columella curved. 



Length, "14 inch. 



Locality. Wanganui. 



Eulima media. PL xviii., fig. 13. 



Shell minute, slightly polished, straight. Whorls 6 or 7, slightly convex, 

 smooth, without any markings ; suture impressed. Aperture ovate rounded 

 in front but not pointed behind ; columella curved to the right. Not urn- 

 bilicated. 



Length, "14 inch. 



Locality. Wanganui. 



Doubtfully located ; should perhaps be placed in Eulimella. 

 Eulimella deplexa. 



Shell minute, slightly polished, straight. Whorls 6-7, flattened, smooth, 

 without any markings ; suture impressed. Aperture sub-quadrate ; columella 

 straight, callously reflected over the umbilical region. 



Length, '14 inch. 



Locality. Wanganui. 



Eulimella obliqua. 



Shell minute, smooth, almost polished, slightly curved to the right. 

 Whorls 7 or 8, the last slightly keeled in the middle ; suture rather obscure. 

 Aperture sub-quadrate, pointed behind ; columella straight and parallel 

 with the outer lip. 



