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DIVISION I. Spire not quite concealed. 



Scientific name. Locality. 



Exanthema, Am. Ocean, W. Indies. 



Mappa, Africa, Amboyna. 



Arabica, Madagascar, do. 



Histrio, So. Seas, Ind. Ocean. 



Argus, Amboyna, Guinea, W. I. 



Testudinaria, Persian Gulf, Amboyna. 



Stercoraria, Coast of Guinea. 



Aurora, So. Se^s. 



Carmeola, Amboyna, East Indies. 



Scientific 



name. 



Locality. 



Talpa, 





Asia, Madagascar. 



Lurida, 





Med., Senegal, Brazils, 



Vanella, 





Barbadoes, Jamaica. 



Lota, 





Sicilian Seas. 



Guttala, 







Sanguinolenta, 





Undata, 





Mauritius. 



Teres, 







Aperta, 







DIVISION II. Obtuse spire quite concealed. 



Achatina, So. Seas, New Holland. 



Caput serpentis, do. do. Mauritius, E. Ind. 



Mauritiana, Persian Gulf, do. 



Vitellus, Amboyna, South Seas. 



Mus, Mediterranean, Africa. 



Tigris, Red Sea, South Seas, 



Amboyna. 



Pantherina, Red Sea. 



Lynx, 



Mauritius, Madagascar. 



Felina, 



Maldives, 



Cynerea, 



Barbadoes, Jamaica. 



Isabella, 



Amboyna, Mauritius, 





Madagascar. 



Cylindrica, 





Indica, 



Eastern Ocean. 



DIVISION III. Umbilicated. 



Onyx, 



Coast of Asia. 



Ursellus, 



Subflava, 





Lutea, 



Clandestina, 





Asellus, 



Succincta, 





Errones, 



Ziczac, 



East Indian Ocean. 



Pyrum, 



Zonata, 



Coast of Guinea. 



Punctata, 



Hirundo, 



Maldives, Antilles. 





Amboyna, Seneg 

 East Indies. 

 Sicily, Africa. 



DIVISION IV. With the margin thickened. 



Moneta, 



Annulus, 



Caurica, 



Dracaena, 



Cruenta, 



Cribraria, 



Erosa, 



Flaveola, 



Spurca, 



Stolida, 



Indian Islands. 

 Amboyna, E. Indies. 



do. Madagascar. 



do. do. 



do. do. 



China, do. 



Mauritius, Bengal. 



Mediterranean. 

 Eastern Ocean. 



Tabescens, 



Halvoca, 



Angustata, 



Ocellato, 



Albuginosa, 



Podraria^ 



Gangranosa,^ 



Fimbriata;* j' 



Tesselata,' . 



Amboyna, Madagascar, 

 do. Maldives. 



Indian Ocean, China. 



California. 



Jamaica. 



China. 



*> 



DIVISION V. With the backs ribbed, wrinkled^ or mberculated. 



Madagascariensis, ^Jajlagascar. 

 Pustulata, Acapulca, China. 



Oniscus, Adriatic Sea. 



Sulcata, Jamaica, Barbadoes. 



Europea, Britain, N. of Europe. 



