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DIVISION VIII. Pillar lip appearing as if worn fat, aperture very wide 



and open. 



Family 1st. Armed with a subulate tooth at the base. 



Scientific name. Locality. 



Monodon, So.'Seas, Cape Horn. 

 Imbrication, do. do. 



Crassilibrum, 



Scientific name. Locality. 



Narva], South Seas. 



Cingulatum, Peru. 



Rhinoceros, 



Persicum, 

 Sertum, 



Family 2d. Without the tooth, and the outside striatal. 



Asiat. Ocean, Amboyna. Haustrum, New Zealand, 



do. Red Sea. Vexillum, 



Family 3J. With the outside tuberculated. 



South Seas. 



Patulum, E. & W. Ind., America. Armigerum, 



Lateostomum, South Seas, China. Dentex, 



Hsemastoma, Eli., Med. & Asiat. Seas. 



DIVISION IX. Shell with spire obliquely recurved, aperture very large, 

 outer lip reflected, and pillar lip -with two obsolete teeth at the base. 



Concholepas, Pern, Magellan. 



DIVISION X. Shell coarse, spire acute, aperture ovate, pillar lip smooth 



or flatfish. 



Lapilless, 



Britain, Norway, Azores. 



Smaragdulus, 



Tranquebar. 



Varium, 





Undosum, 



Amboyna. 



Undatum, 



do. do. 



Afiine, 



So. Seas, Moluccas, 



Ciliatum, 



Greenland. 



Fumosum, 





Solutum, 





Tranquebaricum. 



, Tranquebar. 



Porcatum, 



Mexico. 



Cruentatum, 





Papyraceum. 



Norway. 



Pyrozonias, 





Otaheitense, 



Otaheite. 



Versicolor, 



East Indies. 



Glaciale, 



Northern Ocean. 



Lamellosum, 



New Zealand. 



Carinatum, 



Spitsbergen. 



Lamellatum, 





Filosum, 





Crispatum, 





Sulcatum, 



Tranquebar. 









DIVISION XI. Shell sh 



'ongly ribbed tr< 



ansversely. 



Orbitum, 



New Zealand. 



Indicum, 



East Indies. 



Scala, 



East Indies. 







