﻿PLATE 
  II. 
  

  

  Fig. 
  Page 
  

  

  1. 
  Belonorhynchus 
  acutus 
  (Agassiz); 
  left 
  lateral 
  aspect 
  of 
  

  

  head. 
  — 
  Lower 
  Lias 
  ; 
  Lyme 
  Eegis. 
  cl. 
  Clavicle, 
  n. 
  Nasal 
  

   opening, 
  o. 
  Orbit, 
  op. 
  Operculum, 
  r. 
  Extension 
  of 
  

   cranial 
  roof. 
  [P. 
  3791.] 
  15 
  

  

  2. 
  Belonorhynchus 
  brevirostris, 
  sp. 
  nov. 
  ; 
  right 
  lateral 
  aspect 
  

  

  of 
  head. 
  — 
  Ibid. 
  Lettering 
  as 
  above. 
  [40726.] 
  17 
  

  

  3. 
  Semionotus 
  bergeri, 
  Agassiz 
  ; 
  lateral 
  aspect. 
  — 
  Keuper 
  ; 
  

  

  Coburg. 
  br. 
  Branchiostegal 
  rays. 
  i.op. 
  Interoperculum. 
  

   m. 
  Portion 
  of 
  mandible, 
  op. 
  Operculum, 
  p.op. 
  Pre- 
  

   operculum. 
  s.op. 
  Suboperculum. 
  so. 
  Suborbitals. 
  

   x. 
  Cheek-plate. 
  [P. 
  7399.] 
  56 
  

  

  