107 



DIVISION I. Shell umbilicated. 

 Family 1st. Umbilicus rather large, nearly pervious. 



Scientific name. 

 Vitellus, 

 Punctata, 

 Cruentata, 



Canrena, 



Cancellata, 



Sulcata, 



Locality. Scientific name. 



Maurit., Amboyna, Asia. Rugosa, 



Mediterranean. Vittata, 



Tranquebar. Pallidula, 



Family 2d. Umbilicus bifid. 



All parts of the world. 

 West Indies. 



Spadicea, 

 Rufa, 



Locality. 

 West Indies. 

 Morocco. 

 England. 



Mauritius. 



East and West Indies. 



Family 3d. Umbilicus nearly closed by a callous, or by the inner lip. 



Glaucina, 



Orientalis, 



Maroceana, 



Arachnoides, 



Albumen, 



Eu., Af., Amer., E. Ind. 

 E. Ind., Bay of Naples. 

 Africa, W. Ind., do. 



Amb., C. G. H., Moluc. 



Mammilla, 

 Papilla, 

 Melanostema, 

 Ambigua, 



do., Maurit., Tranque. 

 New Zealand, do. 

 Mauritius, W. Indies. 

 Mediterranean. 



Family 4th. Umbilicus toothed. 

 Fulminea, Senegal, Moluccas. 



DIVISION II. Shell imperforate and toothless. 



Family 1st. Spinous. 

 Corona, Ganges, China. 



Radula, 

 Magdalena, 

 Cornea, 

 Fluveatilis, 



Pulligera, 



Aculeata, 



Pupa, 



Bidens, 



Flavescens, 



Virides, 



Virginia, 



Family 2d. Without spines. 



Amboyna, Tranquebar. Littoralis, 



Magdalen Isles. Lacustris, 



Red Sea. Dubia, 



Europe. Marginata, 



Europe, 

 do. 



DIVISION III. Shell imperforate and toothed. 



Family 1st. Inner lip toothed. 



India, Amb., So. Seas. 

 East Indies. 

 Jamaica. 

 New Zealand. 

 Nicobar Isles. 

 West Indies. 



do. Medit. 



Turrita, 



Piperina, 



Larva, 



Ascensiones, 



Malaccensis, 



Hieroglyphica, 



West Indies. 



Malabar. 



Amboyna. 



Island of Ascension. 



Malaccas. 



East Indies. 



