﻿Quart. 
  Journ. 
  Geo! 
  . 
  Soc 
  .Vol 
  . 
  XLV 
  PI 
  .VI. 
  

  

  s? 
  

  

  

  18. 
  

  

  TR1GONOCR1NUS 
  etc 
  

  

  Mvntern 
  Bros 
  imp. 
  

  

  