so 



DIVISION XII. Shell subglobose, ponderous, aperture large, pillar lip 



very thick. 



Scientific name. Locality. 



Plumbeum, California. 



Scientific name. 

 Crassum, 



Locality. 



DIVISION XIII. Shell with the pillar abrupt and strongly umbilicated. 



Spiratum, 

 Eburneum, 



E. Ind., Med., Arabia. 

 China. 



Zeylanicum, 

 Glabratum, 



Ceylon. 

 Tranquebar. 



DIVISION XIV. Shells somewhat polished and not enumerated in the for- 

 mer divisions. 



Tigrinum, 



Turgitum, 



Scutulatum, 



Testndineum, 



Cochledeum, 



Catarracta, 



Glaberrimum, 



Nucleus, 



Lineatum, 



New Zealand. 



do. 



do. 



do. 

 South Seas. 



Lsevissimum, 



Cyaneum, 



Lseve, 



Igneum, 



Lyratum, 



N. Zealand, C. G.Hope. Plumatuni, 



MINUTE SHELLS. 



New Zealand, Mada- 

 gascar. 

 Britain, W. Indies. 



Exile, 

 Prasrosum. 

 Cinctum, 

 Minimum, 



East Indian Seas. 

 Greenland. 

 East Indies. 



Jamaica. 



Southern Europe. 

 Britain. 



DIVISION XV. Shell roundish, spire flat, lohorls lamellated or spinous, 

 beak produced and umbilicated, and aperture large. 



Pezoar, China. Bulbosum, Tranquebar. 



DIVISION XVI. Shell turreted, subulate, and slightly polished. 

 Family 1st. Whorls entire. 



Maculatum, 



Oculatum, 



Subulatum, 



Felinum, 



Vittatum, 



Digitale, 



Concinnum, 



Cinereum, 



Succinctum, 



Africa, E. In., Amboyna. 



do. 

 China, do. do. 



Ceylon. 

 Bombay, Senegal. 



Amboyna. 

 East Indies. 



Lanceatum, 



Murinum, 



Hastatum, 



Sinuatum, 



Bifasciatum, 



Radiatum, 



Virgineum, 



Acicula, 



East Indies, Amboyna. 

 Africa. 



East Indies. 



do. 

 Coast of Naples. 

 Virginia. 

 Britain, Paris. 



