﻿PLATE 
  XVIII. 
  

  

  

  Fig. 
  

  

  Page 
  

  

  1. 
  Pholidophorus 
  caudalis, 
  sp. 
  nor. 
  ; 
  left 
  lateral 
  aspect.- 
  

  

  

  Lower 
  Lias; 
  Lyme 
  Regis. 
  [P. 
  3664.] 
  

  

  457 
  

  

  2. 
  Ditto 
  ; 
  left 
  lateral 
  aspect. 
  — 
  Ibid. 
  [P. 
  3664 
  a.] 
  

  

  458 
  

  

  3. 
  Leptolepis 
  maerophthahnus, 
  Egerton 
  ; 
  right 
  lateral 
  aspect. 
  

  

  Oxford 
  Clay 
  ; 
  Christian 
  Malford. 
  [46344.] 
  508 
  

  

  4. 
  Thrissops 
  portlandicus, 
  sp. 
  nov. 
  ; 
  left 
  lateral 
  aspect, 
  with 
  

  

  tail 
  partly 
  restored 
  from 
  counterpart. 
  — 
  Portland 
  Stone 
  ; 
  

   Isle 
  of 
  Portland. 
  [P. 
  5538.] 
  525 
  

  

  