﻿466 
  ACTINOPTERYGII. 
  

  

  P. 
  1047 
  a, 
  b, 
  c. 
  Two 
  imperfect 
  specimens 
  of 
  moderate 
  size, 
  and 
  the 
  

   well-preserved 
  caudal 
  half 
  of 
  another 
  fish 
  ; 
  Lyme 
  Eegis. 
  

  

  Egerton 
  Coll. 
  

  

  P. 
  3632, 
  P. 
  4410. 
  Imperfect 
  trunk 
  with 
  well-preserved 
  squamation, 
  

   and 
  remains 
  of 
  a 
  small 
  fish 
  ; 
  Lyme 
  Eegis. 
  

  

  EnnisJcillen 
  Coll. 
  

  

  48041. 
  Hinder 
  portion 
  of 
  head 
  and 
  the 
  greater 
  part 
  of 
  the 
  abdominal 
  

   region, 
  with 
  pectoral 
  fins 
  ; 
  Lyme 
  Regis. 
  

  

  John 
  Brown 
  Coll. 
  

  

  P. 
  7582. 
  Imperfect 
  skeleton 
  probably 
  of 
  this 
  species 
  ; 
  Lyme 
  Regis. 
  

   The 
  very 
  delicate 
  ring-vertebras 
  are 
  shown, 
  and 
  the 
  com- 
  

   paratively 
  small 
  ridge-scale 
  on 
  the 
  caudal 
  pedicle. 
  Fulcra 
  

   are 
  seen 
  on 
  the 
  paired 
  fins, 
  and 
  one 
  pelvic 
  basipterygium 
  

   is 
  preserved. 
  History 
  unknown. 
  

  

  Pholidophorus 
  hartmanni, 
  Egerton. 
  

   [Plate 
  XII. 
  figs. 
  4, 
  5.] 
  

  

  1843. 
  Pholidophorus 
  hartmanni, 
  Sir 
  P. 
  Egerton, 
  Proc. 
  Geol. 
  Soc. 
  vol. 
  iv. 
  

   p. 
  184. 
  

  

  Type. 
  Small 
  distorted 
  fish 
  ; 
  British 
  Museum. 
  

  

  A 
  species 
  of 
  moderate 
  size, 
  attaining 
  a 
  length 
  of 
  about 
  0*17. 
  

   Length 
  of 
  head 
  with 
  opercular 
  apparatus 
  greater 
  than 
  the 
  maximum 
  

   depth 
  of 
  the 
  trunk, 
  and 
  occupying 
  more 
  than 
  one-quarter 
  of 
  the 
  

   total 
  length 
  of 
  the 
  fish. 
  The 
  rugose 
  ornament 
  of 
  the 
  head 
  and 
  

   opercular 
  bones 
  very 
  feeble 
  or 
  absent 
  ; 
  maxilla 
  comparatively 
  robust, 
  

   ornamented 
  with 
  delicate, 
  longitudinally 
  directed 
  rugae 
  ; 
  preoper- 
  

   culum 
  with 
  few 
  short, 
  radiating 
  ridges. 
  Pelvic 
  fins 
  arising 
  far 
  in 
  

   advance 
  of 
  the 
  middle 
  point 
  of 
  the 
  trunk, 
  and 
  opposed 
  to 
  the 
  dorsal 
  

   fin. 
  Scales 
  of 
  moderate 
  size, 
  smooth, 
  the 
  hinder 
  margin 
  strongly 
  

   though 
  finely 
  serrated, 
  and 
  the 
  sharp 
  points 
  passing 
  into 
  con- 
  

   spicuous 
  crennlations 
  when 
  the 
  surface 
  is 
  partly 
  abraded 
  ; 
  about 
  six 
  

   longitudinal 
  flank-series 
  deeper 
  than 
  broad; 
  lateral 
  line 
  forming 
  

   a 
  feeble 
  ridge. 
  

  

  Form. 
  Sf 
  Loc. 
  Upper 
  Lias 
  : 
  Wiirtemberg. 
  

  

  P. 
  605. 
  The 
  type 
  specimen, 
  a 
  small 
  fish 
  distorted 
  anteriorly, 
  wanting 
  

   the 
  head, 
  and 
  shown 
  of 
  the 
  natural 
  size 
  in 
  PI. 
  XII. 
  fig. 
  4 
  ; 
  

   Ohmden. 
  Of 
  the 
  fins 
  only 
  parts 
  of 
  the 
  dorsal 
  and 
  caudal 
  

   remain 
  ; 
  but 
  the 
  characters 
  of 
  the 
  squamation 
  are 
  well 
  

   displayed. 
  Egerton 
  Coll. 
  

  

  