﻿Beecher 
  — 
  Natural 
  Classification 
  of 
  the 
  Trilobites. 
  205 
  

  

  List 
  of 
  Genera. 
  

  

  Acaste 
  Goldfuss, 
  

   Acerocare 
  Angelin, 
  

   Acidaspis 
  Murchison, 
  

   Acrocephalites 
  Wallerius, 
  

   Actinopeltis 
  Cor 
  da, 
  

   iEglina 
  Barrande, 
  

   Aglaspis 
  Hall, 
  

   Agnostus 
  Brongniart, 
  

   Agraulus 
  Corda, 
  

   Arnphion 
  Pander, 
  

   Ampyx 
  Batman, 
  

   Anacheirurus 
  Reed, 
  

   Ancyropyge 
  Clarke, 
  

   Aneucanthus 
  Angelin, 
  

   Angelina 
  Salter, 
  

   Anomocare 
  Angelin, 
  

   Auopolenus 
  Salter, 
  

   Arctinurus 
  Castelnau, 
  

   Areia 
  Barrande, 
  

   Arethusina 
  Barrande, 
  

   Arges 
  Goldfuss, 
  

   Arraphus 
  Angelin, 
  

   Asaphelina 
  Bergeron, 
  

   Asaphellus 
  Callaicay, 
  

   Asaphiscus 
  Meek, 
  

   Asaphus 
  Brongniart, 
  

   Atops 
  Emmons, 
  

   Avalonia 
  Walcott, 
  

   Bailiella 
  Matthew, 
  

   Barrandia 
  McCoy, 
  

   Basil 
  icus 
  Salter, 
  

   Bathynotus 
  Ball, 
  

   Bathyurellus 
  Billings, 
  

   Bathyuriscus 
  Meek, 
  

   Bathyurus 
  Billings, 
  

   Bavarilla 
  Barrande, 
  

   Bergeronia 
  Mattheio, 
  

   Boeckia 
  Brogger, 
  

   Bohemilla 
  Barrande, 
  

   Bolbocephalus 
  Whitfield, 
  

   Brachyaspis 
  Salter, 
  

   Brachymetopus 
  McCoy, 
  

   Brongniartia 
  Salter, 
  - 
  

   Bronteopsis 
  W. 
  Thompson, 
  

   Bronteus 
  Goldfuss, 
  

   Bumastus 
  Murchison, 
  

   Burmeisteria 
  Salter, 
  

  

  Page. 
  Page. 
  

  

  202 
  Calymene 
  Brongniart, 
  200 
  

  

  189 
  Calyinenella 
  Bergeron, 
  200 
  

   197 
  Calymenopsis 
  Munier- 
  Chal- 
  

  

  189 
  mas 
  and 
  Bergeron, 
  200 
  

  

  201 
  Carausia 
  Hicks, 
  ' 
  188 
  

  

  193 
  Carmon 
  Barrande, 
  188 
  

  

  182 
  Celmus 
  Angelin, 
  195 
  

  

  184 
  Centropleura 
  Angelin, 
  190 
  

  

  189 
  Ceratocephala 
  Warder, 
  197 
  

   201 
  Ceratolichas 
  Ball 
  and 
  

  

  186 
  Clarke, 
  196 
  

  

  201 
  Ceratopyge 
  Cor 
  da, 
  190 
  

  

  197 
  Ceraurus 
  Green, 
  201 
  

  

  188 
  Chariocephalus 
  iZc«#, 
  190 
  

  

  189 
  Chasmops 
  McCoy, 
  202 
  

   189 
  Cheirurus 
  Beyrich, 
  201 
  

   189 
  Conocephalites 
  Barrande, 
  188 
  

   196 
  Conocoryphe 
  Corda, 
  188 
  

  

  199 
  Conolichas 
  Dames, 
  196 
  

  

  195 
  Conophrys 
  Callaway, 
  182 
  

  

  196 
  Cordania 
  Clarke, 
  195 
  

   186 
  Coronura 
  Hall, 
  202 
  

  

  189 
  Corycephalus 
  Hall 
  and 
  

  

  193 
  " 
  Clarke, 
  202 
  

  

  193 
  Corynexochus 
  Angelin, 
  190 
  

  

  193 
  Crepicephalus 
  Owen, 
  190 
  

  

  188 
  Cromus 
  Barrande, 
  199 
  

  

  188 
  Crotalocephalus 
  Salter, 
  201 
  

  

  188 
  Crotalurus 
  Volborth, 
  195 
  

  

  193 
  Cryphseus 
  Green, 
  202 
  

  

  193 
  Cryptonyraus 
  Eichwald, 
  193 
  

  

  188 
  Ctenocephalus 
  Corda, 
  ' 
  188 
  

  

  193 
  Ctenopyge 
  Linnarsson, 
  190 
  

  

  193 
  Cybele 
  Loven, 
  199 
  

  

  193 
  Cyclognathus 
  Linnarsson, 
  190 
  

  

  190 
  Cyclopyge 
  Corda, 
  193 
  

   190 
  Cyphaspis 
  Burmeister, 
  195 
  

   190 
  Cyphoniscus 
  Salter, 
  182 
  

   182 
  Cyrtometopus 
  Angelin, 
  201 
  

   193 
  Dalmanites 
  Emmrich, 
  202 
  

   193 
  Dechenella 
  Kayser, 
  195 
  

  

  195 
  Deiphon 
  Barrande, 
  201 
  

  

  200 
  Diaphanometopus 
  Schmidt, 
  201 
  

   193 
  Dicranogmus 
  Corda, 
  196 
  

  

  196 
  Dicranurus 
  Conrad, 
  197 
  

   193 
  Dictyocephalites 
  Bergeron, 
  188 
  

   200 
  Dikelocephalus 
  Oioen, 
  190 
  

  

  