INDEX 



TO THE 



CLASSES, ORDEES, GENERA AND PLATES 



TO ILLUSTRATE THE GENERA. 



THE CLASSES ABE FEINTED IN CAPITALS, THE OEDERS IN SMALL CAPITALS, 

 AND THE GENERA IN THE ORDINARY TYPE. 



A. 



Plate 

 19 

 1 

 13 

 19 

 14 

 10 



Acasta, 



Acera, 



Achatina, 



Adna, 



Akera, 



Ammonites, 



Ammonoceratites, 10 



Amphidesma, 17 



Amphitrite, 



Ampullaria, 



Anastoma, 



Anatifa, 



Anatina, 



Ancillaria, 



Ancylus, 



ANNULOSA, 



Anodonta, 



Anomia, 



Anemia, 



Antennata, 



Apoda, 



Area, 



Area, 



Arcopagia, 



Argonauta, 



Argonauta, 



Arthemis, 



ARTICULATA 



AspergiUum, 



Astarte, 



Auricula, 



Avicula, 



B. 



Baculites, 



Balanus, 



Belemnites, 



Birostrites, 



Bivalve Shells, 



Brochus, 



Buccinmn, 



Buccinum, 



Bulimus, 



B'Ula, 



Bulla, 



Calceola, 



Calyptraea, 



Cancellaria, 



Cephalopoda, 



Capsa, 



Cardita, 



Cardium, 



Cardium, 



Caiinaria, 



Carocolla, 



Cassidaria, 



Cassis, 



Cliama, 



Chama, 



Ceritliium, 



Concholepas, 



Chiton, 



Plate Fie. P«ge 

 10 3 67 



19 10,11 171 



10 



29 76 



124 



36 



25 178 



24 51 

 14 81 

 16 105 

 22 50 



25 111 



124 

 114 

 88 

 6S 

 149 

 142 



106 

 84 

 84 

 41 



135 

 90 

 82 



118 



