S6 



Family 3d. With a single varix. 



Scientific name. Locality. Scientific name. Locality. 



Parthenopus, Bay of Naples. Clandestine, 



Cutaceus, Af., W. I., Coromandel. Lyratus, New Zealand. 



DIVISION V. Shell with unequally gibbous ivhorls, decussated ribs, and 

 the aperture surrounded by a thin, dilated membrane. 



Anus, Asiat. Ocean, Med. Mulus, Coasts of Hitoe. 



DIVISION VI. Shell somewhat spinous, and without a beak. 



Asiatic Ocean, China. 



Jamaica. 



Guinea, So. Seas. 



Ricinus, 



Nodus, 



Neritoideus, 



Fimbriatus, 



Hystrix, E. Indies, do. 



Mancinella, Amboyna, Madagascar. 



Hippocastanum, Batavia, Banda. 



Sacellum, 



Nodatus, 



Lacerus, 



Virgatus, 



Columborium, 



Senticosus, 



Nicobar Isles. 

 New Holland. 

 Guinea. 

 East Indies. 

 South Seas, 

 do. China. 



DIVISION VII. Shell nodulous or longitudinally plaited, with a short beak. 



Pulo Condore. 

 Amboyna. 



Plicatus, 

 Morbosus, 

 Consul, 

 Undatus, 



East Indies. 

 West Indies. 

 East Indies. 

 Tranquebar. 



Fiscellum, 



Dubious, 



Fenestratus, 



DIVISION VIII. Shell ovate, aperture wide, inner lip thickened and 

 spread, outer lip thick and undulated. 



Stramineus, New Zealand. Australis, So. Seas. 



DIVISION IX. Shell with a long, straight, subulate beak, unarmed. 

 Family 1st. Turretcd outer lip, having a notch at the summit. 



Babylonius, Asia, Amboyna, China. Virgineus, 



Clavatulus, Guinea. Javanus, 



Gibbosus, Red Sea. Tornatu.-;, 



Guinea. 



Java, Tranquebar, China, 

 do. Magellan. 



Tulipa, 



Massa, 



Amplustre, 



Trapezium, 



Polygonus, 



Family 2d. With the column plaited. 



W. Indies, South Seas. Infundibulum, West Indies. 



do. Lancea, Amboyna. 



America, So. Seas. Ocellatus, West Indies. 



R. Sea, Amboyna, China. Craticulatus, Mediterranean. 

 I. of France, B. of Napl. 



