﻿Amer. 
  Jour. 
  Sci., 
  Vol. 
  Ill, 
  1897. 
  

  

  Plate 
  III. 
  

  

  2 
  Sao 
  

  

  3 
  Sao 
  

  

  1 
  Sao 
  

  

  4 
  Sao 
  

  

  5 
  Dalmanites 
  

  

  6 
  Dalmanites 
  

  

  7 
  Dal 
  

  

  Dalmanites 
  

  

  HYPOPARIA 
  

  

  OPISTHOPARIA 
  

  

  14 
  Atops 
  '15 
  Conocoryphe' 
  f 
  16 
  Ptychoparia 
  \ 
  f 
  17 
  Otenus 
  \ 
  18 
  Asaph 
  

  

  19 
  Illaenus 
  " 
  20 
  Proetus 
  N 
  21 
  Bronteus 
  22 
  Lichas 
  9 
  23 
  Acidaspis 
  

  

  PROPARIA 
  

  

  24 
  Placoparla 
  25 
  Encrinums 
  26 
  Calyinene 
  27 
  Dipleura 
  28 
  Cheirurus 
  

  

  32 
  Acaste 
  33 
  Phacops 
  

  

  Classification 
  of 
  Trilobites. 
  Beecher. 
  

  

  