INDEX TO GENERA. 



317 



INDEX TO GENERA. 



Acanthocottus 214 



Acrodns 163 



Actaeonidea 273 



Actinobolus 252 



Actinoceras 261 



Agaricus 214 



Agathaumas 279 



Alexia 143 



Alveinus 53 



Ammonites 264 



Amnicola 97 



Anchippodus 37 



Anchitherium 37 



Ancylus 97, 110 



Anodonta 98, 109 



Aptenodytes 181, 192 



Arion 148 



Ariolimax 146 



Aristida 218 



Artemia 164, 220 



Aster 46 



Astarte 50, 51, 245 



Asparagus 188 



Assiminea. . , 152 



Baena 162 



Balsenoptera 11, 30 



Bathmodon 38, 279 



Beatricea 261 



Beguina 257 



Biota 33 



Bothrocorbula 274 



Breviarca 55 



Busycon 276 



Bythinella 98 



Cactus 46 



Canis 46 



Calappa 133 



Callitris 34 



Cardita 51 



Carditamera 257 



Cariacus 124 



Carychium 98 



Cebus 40 



2 



Celtis 239 



Cerasus 46 



Chametrachsea 120 



Chama 116 



Chalicotherium 38 



Chameleo 277 



Chamrecyparis 33 



Chelydra 22, 23, 129 



Chelopus 22 



Chettusia 32 



Chisternon : 162 



Chrysanthemum 126 



Cimoliasaurus 128, 236 



Circe 130 



Claudius 22, 23 



Cleome 46 



Clidastes 127, 141 



Codakia 86 



Corbicula 49 



Cottus 213 



Crassatella 50, 130, 249 



Cryptodon 91 



Cucullaea 53 



Cyamium 234 



Cyclocardia 255 



Cyclophis : 40 



Cyclas 85 



Cycladella 232 



Cynocercus 129 



Cylichnella 273 



Dinoceras 241 



Discosaurus 39 



Dolphanes 273 



Donax 216 



Dromia 133 



Ectracheliza 271 



Edestosaurus 141 



Elasmosaurus 128 



Emys 22 



Endoceras 261 



Epigaea 236 



Erisichthe 281 



Eschrichtius 30 



