Hurron.—On New Tertiary Mollusca from Canterbury. 597 
Aperture, sub-ovate, suddenly narrowed to form the short straight anterior 
canal. Columella, with three oblique folds on the anterior end. Axis, 1°45. 
Breadth, .93. 
Locality : White Rock River. 
LUNATIA SUTURALIS, sp. nov. 
Plate XVI., Fig. 11. 
Globose, smooth. Whorls, three to five. Suture, excavated. Umbilicus, 
rather narow, not funiculate, but with a shallow spiral groove running to 
the anterior end of the inner lip. Aperture, semi-lunar. Inner lip, with a 
slight callus. Axis, -65. Breadth, :6. 
Locality : Waiho. 
In the young the umbilical groove is more strongly marked, giving the 
shell the appearance of a Natica. 
SIGARETUS CARINATUS, sp. no 
Small, depressed, smooth. Spire, Serial: Whorls, two and a half. 
Body whorl, sharply keeled, and margined along the keel. Aperture, 
oblique, very wide. Inner lip, curved posteriorly. Umbilicus, wide, partly 
covered by the posterior fold of the inner lip. Axis, -07. Breadth, -25. 
Locality : White Rock River. 
Somewhat similar in shape to S. incisus, Reeve, but widely umbilicated 
and keeled. 
Acus (aBRETIA) NITIDA, Hinds. 
Plate XVI., Fig. 12. 
Hinds, “ Pro. Zool. Soc.," 1843. 
Locality: White Rock River. Found living in Tasmania and the Mar- 
quesas Islands. 
Evurima acicunata, Pease. 
Pease, ** Pro. Zool. Soc.," 1860. 
Locality: White Rock River. Found living in the Sandwich Islands. 
Large. Whorls, concave; the anterior half, finely spirally striated ; the 
posterior half, smooth, or marked with oblique lines of growth only. Suture, 
closed over. Aperture, sub-quadrate. Axis, 3:5. Breadth, 1:4. Angle of 
spire, 15°. . 
Localities : White Rock River, Point Hill. 
This species is readily distinguished from T. gigantea, by the spiral strie 
being fine and numerous, and, in the larger whorls, confined to the anterior 
half; while in T. gigantea the strie are larger (eight or ten in a whorl), and 
extend throughout its whole breadth. 
. CLDADOPODA DIRECTA, sp. nov. 
Plate XVI., Fig. 18. 
Smooth, polished, not much curved ; section, circular. Diameter, -3. 
