tion they could have I— ^but in xmn ; for I never saw anotlief 

 before or since. 



There are many peculiar characters presented in this species 

 independent of its colour : the spiral \vhorls are strongly plaited 

 longitudinally about half their length, and marked very slightly 

 (but sufficiently distinct) with several oblique indented slriag ; the 

 principal whorl has a row of indented and unequal sulcations 

 near the suture, and a slight appearance of elevation along the 

 white transverse band ; the outer lip is thick, broad, and flat- 

 tened beneath; but the margin is reflected back, and forms a 

 prominent rim on the upper surface. The shell, when viewed 

 closely, appears rough Avith minute scale-like elevations, very 

 much resembling shagreen. 



