OF CONCHOLOGY. Ill 



A common shell on many of the 

 British shores. 



Linn. Trans, vol. viii. page 137. 



FBody, 3131 the pillar or columella, 

 Q canal or gutter. 



Ficr. 11th.— MUREX MURICA- 

 TUS. Shell strong and rough, with 

 from six to seven ventricose, tubercu- 

 lated volutions, tapering to a fine point; 

 the tubercles are formed by inter- 

 rupted, longitudinal ribs, crossed by 

 strong elevated stria?, and in some 

 parts are pointed or angulated ; apex 

 smooth ; aperture oval, terminating 

 in a long slender canal ; outer-lip 

 sharp and dentated at the edge, 

 margin within crenulated ; pillar-lip 

 smooth. Rather a local shell. 



Montagu's Testacea Britannica, 

 page 262. 



Linn. Trans, vol. viii. page 149. 



12 Base, C aperture, li K T&c. sides, 

 P the beak or rostrum, Q canal or 

 gutter. 



