PLATE XCIV. 



STROMBUS COSTATUS. 



RIBBED • STROMBUS, 

 GENERIC CHARACTER. 



Animal a slug. Shell univalve, spiral. Aperture dilated, lip ex- 

 panding, produced into a groove. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell small, brown, taper, spires swelled, and wrought with pro 

 minent longitudinal ribs. 



Strombiformis parvus fuscis, anfractibus costls elatls longitudinalibus 



insignitis. 

 CosTATUs. Da Costa. Br. Conch, p. 118. sp. 71. 



ba Costa, who is the only author that describes this curious shell, 

 says it is found on the coasts of Cornwall. 



