32 [June, 1811. 



C. engonata. Short fusiform, with strong spiral prominent lines ; 

 and numerous longitudinal costae, not so distinct as the transverse 

 lines; spire scalariform, volutions, 4 ; columella with 3 plaits, 

 the middle one very oblique ; submargin of labium with promi- 

 nent transverse lines. Length 3-8 inch. 



BoNELLIA. 



Bonellia lineata. Subulate, polished, with obsolete spiral lines, 

 distinctly visible only on the body whirl ; a spiral line margins 

 the suture at base of each volution, causing the suture to appear 

 profound ; this line is continued on the middle of the body whirl. 

 Very distinct from B. terebellata,* the deeply impressed suture 

 and smaller umbilicus distinguish it at a glance. 



TuRRITELLA. 



Turritella indenta. Subulate, whirls about 15, contracted or in- 

 dented above the middle, and with obsolete spiral striae ; suture 

 profound, the lower margin obtusely carinated by the indenta- 

 tion ; the upper margin also subcarinated ; basal margin acutely 

 angulated ; base flat or slightly concave. Length 2 inches. 



T. exaltata. Subulute, profoundly elongated ; whirls convex, with 

 spiral striae ; base of each with a slight groove, and carinated 

 line which margins the suture ; waived longitudinal rugae robust. 

 Obtained only in fragments, but the spire tapers so gradually, 

 that the shell must have attained between 3 and 4 inches in 

 length by 1-2 inch in breadth. 



T. perlaqueata. Subulate, whirls convex at base, longitudinally 

 ribbed or fluted, with very fine spiral striae, most profound towards 

 the base of the large volution. Length rather more than 1-2 an 

 inch. 



Marginella. 



Marginella perexigua Very small, obtusely ovate ; labrum pro- 

 foundly thickened, the margin minutely crenulated ; labium with 

 4 plaits ; spire depressed ; volutions concealed. 



A small species, very much like a Cyprasa in form. Length 

 1-8 inch. 



* Bulimus tcrcballatus, Lam. 



