G. 



DIAGNOSES 



ov 



New Species and a New Genus of Mollusks 



FROH 



THE REIGEN MAZATLAN COLLECTION; 



WITH AN ACCOUNT OF ADDITIONAL SPECIMENS PRESENTED TO 

 THE BRITISH MUSEUM. 



BY 



PHILIP P. CARPENTER, B. A.. Ph. D. 



From the Proceeding? of the ZoGlogical Society of London, pp. 2CS-273, 



March 14. 1805. 



( 253 ) 



