G. 



DIAGNOSES 



OF 



NEW SPECIES AND A NEW GENUS OF MOLLUSKS, 



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 Proceedings of the Zoological Society of London, pp. 268-273, 

 March 14. 1865. 



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