116 CONTRIBUTIONS 
ters with certainty. The mouth and apex are destroyed. 
The figure represents it in that state. It is flatter on the 
whorls than usual in this genus. The inferior half of the 
body whorl is not ribbed but transversely striate. It seems 
closely allied to S. semicosta (Sowerby.) 
S. carinata. Plate 4. Fig. 103. 
Description. Shell conical, closely ribbed, carinate on the 
inferior part of the last whorl; substance of the shell thick ; 
spire elevated, pointed; ribs about twelve, lamelliform ; 
whorls six, rounded; mouth round. 
Length.... Breadth .2, of an inch. 
Observations. All the specimens I have of this species 
are more or less mutilated, the lip is not perfect in any one. 
It differs from the above in having rounded whorls, in the 
continuation of the ribs to the base, and in the sharpness of 
those ribs. In the carina it resembles the lamellosa (La- 
marck), a recent species from our southern coasts. It is, 
however, specifically different, being a smaller species and 
more attenuated. 
S. quinquefasciata. 
Description. 'Two fragments of a species, for which I 
propose this name, are in my cabinet. These display suffi- 
cient characters to distinguish it. Five rather depressed 
bands are placed, transversely, on the middle of the whorls, 
Between the ribs are transverse striae. The ribs are sixteen 
in number and Jamelliform. It is carmate below, with a 
