596 T'ransactions.—G eology. 
spirally striated.  Strie rounded, narrower than the grooves.  Interstices 
crossed by oblique lines of growth. Aperture, ovate. Outer lip, simple. 
Canal, moderate, slightly recurved. Body whorl rather longer than the 
spire. Axis, ‘37. Breadth, -15. 
Locality : White Rock River. 
The sharp keel of the spire whorls gives the appearance of the sutures 
being excavated. 
COMINELLA SUBNODOSA, sp. nov. 
Plate XVI., Fig. 7. 
Ovate, conical. Whorls, five, flattened, distantly spirally ribbed ; the 
intervening grooves much broader than the ribs. Suture, covered. Spire 
whorls with one, and body whorls with two rows of low, rounded, tubercles, 
of which there are about twelve in each row on the body whorl. Plait over 
the suture sub-nodose. Aperture, ovate, with a distinct posterior sinus. 
Interior of outer lip, grooved. Inner lip with a broad callus. Canal, short, 
bent strongly to the left, and recurved. Axis, 1°3. Breadth, 1:0. 
Locality : White Rock River. 
COMINELLA ORDINATIS, sp. nov. 
Plate XVI., Fig. 8. 
Small, ovate. Whorls, five or six, smooth, finely spirally striated, 
slightly convex ; those of the spire with some obsolete transverse ribs. 
Aperture, rather narrow, posterior sinus nearly obsolete. Canal, short, 
broad, recurved, not much bent on one side. Axis, ‘5. Breadth, :27. 
Locality: White Rock River. 
Like Buccinum citrinum, Reeve, in shape. 
NASSA (UZITA) COMPTA, sp. nov. 
Plate XVI., Fig. 9. 
Small, ovate. Whorls, six, rounded, strongly spirally grooved, and 
crossed by low, rounded, transverse ribs. Aperture, broadly ovate, suddenly 
contracted to form the short oblique canal. Inner lip, well marked ; a tooth 
near the posterior end. Outer lip, varicated, thick, dentate internally. 
Canal, short, inclined to the left, and recurved. Axis, ‘48. Breadth, -18. 
Locality : White Rock River. 
These shells still retain some of their colour, which was brown. The 
interior was white with brown lips. The nearest ally of the species is 
Nassa striata, Adams, from Panama. 
TURBINELLA BREVIROSTRIS, sp. nov. 
Plate XVI., Fig. 10. 
Broadly fusiform. Spire, pointed. Whorls, five; those of the spire, 
flattened, with low, rounded, transverse ribs, of which there are about fifteen 
on the body whorl. These are crossed by spiral strie of unequal size. The 
transverse ribs on the body whorl reach to the anterior portion of the shell. 
