﻿

  

  PLATE 
  I. 
  

  

  Fig. 
  Page 
  

  

  1. 
  Chondrosteus 
  acipenseroides, 
  Egerton 
  ; 
  lateral 
  aspect, 
  one- 
  

  

  quarter 
  nat. 
  size. 
  — 
  Lower 
  Lias 
  ; 
  Lyme 
  Eegis. 
  cl. 
  Clavicle. 
  

   hm. 
  Hyomandibular. 
  ju. 
  Jugal. 
  op. 
  Operculum, 
  pt. 
  

   Pterygoid, 
  s.cl. 
  Supraclavicle. 
  s.op. 
  Suboperculum. 
  

  

  [P. 
  3366.] 
  28 
  

  

  2. 
  Ditto; 
  head 
  and 
  pectoral 
  arch, 
  inferior 
  aspect, 
  one-half 
  

  

  nat. 
  size. 
  — 
  Ibid. 
  br. 
  Branchiostegal 
  rays. 
  ch. 
  Cerato- 
  

   hyal. 
  d. 
  Dentary. 
  i.cl. 
  Infraclavicle. 
  moo. 
  Maxilla. 
  

   so. 
  Suborbital, 
  x. 
  Fracture 
  across 
  clavicle. 
  Other 
  

   letters 
  as 
  above. 
  [P. 
  2048.] 
  31 
  

  

  3. 
  Ditto 
  ; 
  left 
  Pterygoid 
  ( 
  pt.), 
  Palatine 
  (pi.), 
  Maxillary 
  (moc.), 
  

  

  and 
  Jugal 
  (ju.) 
  bones, 
  outer 
  aspect. 
  — 
  Ibid. 
  [P. 
  3367.] 
  29 
  

  

  4. 
  Ditto 
  ; 
  neural 
  arches 
  of 
  trunk, 
  right 
  lateral 
  aspect. 
  — 
  Ibid. 
  

  

  n.a. 
  Neural 
  arch. 
  n.s. 
  Neural 
  spine. 
  [P. 
  2050.] 
  29 
  

  

  5. 
  Ditto; 
  portion 
  of 
  pectoral 
  arch, 
  visceral 
  aspect. 
  — 
  Ibid. 
  

  

  cl. 
  Clavicle 
  i.cl. 
  Infraclavicle. 
  [P. 
  4341b.] 
  32 
  

  

  