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 lamelliform. It is carinate below, with a 



