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DIVISION III. Shell umbilicated and solid. 

 Family 1st. Umbilicus toothed. 



Scientific name. Locality. Scientific name. Locality. 



Pica, West Indies, Sardinia. Nodolus, 



Family 2cZ. Umbilicus without teeth. 



Dentatus, 



Muricatus, 



Auricularis, 



Vinctus, 



Quadrifasciatus, 



Sanguineous, 



Atratus, 



Anguis, 



Diadema, 



Southern Europe. 

 Southampton. 

 Devonshire. 

 Cornwall, Swanzea. 

 Med., Algiers. 

 Nicobar Isles. 

 South Seas. 

 New Zealand. 



Undulatus, 



Argyrostomus, 



Margaritaceous, 



Porphyrites, 



Mespilus, 



Granulatus, 



Cinireus, 



Torquatus, 



Van Dieman's Land, N. 



Holland. 

 I. O., R. Sea, C.G.Hope. 

 Frederic's Island. 

 New Caledonia. 

 South Seas. 



do. Nicobar Isles. 



New Zealand. 



DIVISION IV. Shell depressed, foliated, spinous or nodulous, umbilicus 

 large, pervious and armed within. 



Delphinus, Asiat. Ocean, Mauritius, Exasperatus, East Indies. 



Asiat. Ocean, Mauritius, 

 Araboyna. 



Exasperatus, 

 Distortus, 



Scalaris, 



Principalis, 



Clathrus, 



Clathratulus, 



China. 



DIVISION V. Cancellated. 

 Family 1st. Umbilicated. 



Family Sid. Imperforated. 



Coromandel. 

 Europe, America. 

 Britain. 



Lacteus, 

 Pulcher, 

 Ambiguus, 



Mediterranean. 

 West Indies. 

 Mediterranean. 



MINUTE SHELLS. 



Elegantissimus, 



Simillimus, 



Parvus, 



Striatulus, 



Reticulatus, 



Bryereus, 



Coniferus, 



Britain. 



Island of Jura. 



Britain. 



Medit., England. 



Pembroke, Kent. 



Britain, West Indies. 



Weymouth. 



Denticulatus, 



Arcuatus, 



Striatus, 



Costatus, 



Unicus, 



Indistinctus. 



Weymouth. 



Guernsey. 



Cornwall, Dev., Ireland. 



England, Wales. 



Sandwich. 



