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DIVISION III. Shell thin, gibbous, and aperture large. 

 Family \st. Apex generally umbilicated and without a spire. 



Scientific name. 



Locality. 



Scientific name. 



Locality. 



Naucum, 



Amboyna, Africa, Asia. 



Amygdalus, 



W. Indies, Niger. 



Aperta, 



C. G. Hope, Britain. 



Lignaria, 



Adriatic, Britain. 



Catena, 



Devonshire. 



Pectinata, 



Denmark. 



Plumala, 



do. 



Sol ut a, 



Ceylon. 



Hydatis, 



Med., Britain. 



Akera, 



Norway, Britain. 



Ampulla, 



Amboyna, E. Indies. 



Cylindrica, 



South Seas. 





SHELLS 



MINUTE. 





Cylindracea, 



Britain. 



Retusa, 



Britain. 



Umbilicata, 



do. 



Obtusa, 



do. 



Family 2cZ. Having a spire. 



Physis, 



East Indies, So. Seas. 



Undulata, 



Tranquebar. 



Amplustre, 



China, Moluccas. 



Scabra, 



Java. 



Zonata, 



Tranquebar. 







DIVISION IV. Shell pyriform, with produced beaW. 



Ficus, Ind. Ocean, Amboyna. Rapa, Amboyna, Asiat. Ocean. 



Pyrum, Canalicula, 



DIVISION V. Shell generally thin, spire prominent, and body whorl 



inflated. 



Voluta, 



Dominicensis, 



Crassula, 



Frontinalis, 



Rivalis, 



Hypnorum, 



Gelatinosa, 



Virginea, 



Fasciata, 



St. Domingo. 

 Virginia, W. Indies. 

 Britain. 



do. 



do. 

 Denmark. 

 West Indies. 

 E. and W. Indies. 



Strigata, 



Striatula, 



Exarata, 



Truncata, 



Priamis, 



Zebra, 



Achatina, 



Purpurea, 



Sinistrorsa, 



Guinea. 



Guinea, W. Indies. 



do. 

 E. Indies, Africa, Amer. 

 Africa. 



do. 



DIVISION VI. Shell cylindrical, with a subulate spire and truncate base. 

 Terebellum, Amboyna. 



