﻿442 
  ACTINOPTEKYGII. 
  

  

  between 
  the 
  pectorals 
  and 
  the 
  anal 
  ; 
  dorsal 
  and 
  anal 
  fins 
  short- 
  

   based, 
  remote 
  and 
  more 
  or 
  less 
  completely 
  opposed 
  ; 
  candal 
  fin 
  

   rounded. 
  Scales 
  robust, 
  the 
  majority 
  with 
  produced 
  anterior 
  

   angles, 
  and 
  those 
  of 
  the 
  flank 
  not 
  deeper 
  than 
  broad. 
  

  

  Lepidosteus 
  (Clastes) 
  fimbriatus, 
  Wood. 
  

  

  1846. 
  Lepidosteus 
  Jimbriatus, 
  S. 
  V. 
  Wood, 
  Lond. 
  Geol. 
  Journal, 
  pp. 
  6, 
  

   122, 
  pi. 
  ii. 
  fig. 
  9. 
  

  

  Type. 
  Fragment 
  of 
  mandible 
  and 
  operculum 
  ; 
  British 
  Museum. 
  

  

  An 
  imperfectly 
  definable 
  small 
  species, 
  known 
  only 
  by 
  fragments. 
  

   External 
  bones 
  ornamented 
  with 
  elongated 
  tubercles 
  of 
  ganoine, 
  

   usually 
  arranged 
  in 
  more 
  or 
  less 
  radiating 
  series. 
  Operculum 
  

   slightly 
  deeper 
  than 
  broad, 
  its 
  conspicuous 
  ornament 
  radiating 
  from 
  

   the 
  antero-superior 
  angle. 
  Scales 
  all 
  smooth, 
  none 
  serrated 
  or 
  

   fimbriated, 
  except 
  a 
  few 
  narrow 
  scales 
  apparently 
  from 
  the 
  anal 
  

   region 
  or 
  from 
  the 
  base 
  of 
  the 
  pelvic 
  fins. 
  

  

  The 
  typical 
  operculum 
  measures 
  0*016 
  in 
  maximum 
  depth 
  and 
  

   0*015 
  in 
  maximum 
  breadth. 
  

  

  Form. 
  Sf 
  Loc. 
  Upper 
  Eoceaae 
  : 
  Hampshire. 
  

  

  25252*, 
  25254*. 
  Right 
  operculum 
  and 
  fragment 
  of 
  dentary, 
  the 
  

   type 
  specimens 
  figured 
  loc. 
  cit. 
  ; 
  Hordwell 
  Cliff. 
  The 
  

   fragment 
  of 
  jaw 
  exhibits 
  the 
  bases 
  of 
  the 
  large 
  teeth 
  in 
  

   spaced 
  series, 
  with 
  minute 
  teeth 
  on 
  the 
  outer 
  side 
  though 
  

   none 
  within. 
  Presented 
  by 
  Searles 
  V. 
  Wood, 
  Esq., 
  1850. 
  

  

  P. 
  1529 
  a. 
  Three 
  opercula, 
  one 
  being 
  incomplete, 
  and 
  one 
  sub- 
  

   operculum 
  ; 
  Hordwell. 
  Egerton 
  Coll. 
  

  

  P. 
  1700 
  a. 
  Associated 
  remains 
  in 
  block 
  of 
  sand, 
  including 
  operculum 
  

   and 
  portions 
  of 
  jaws 
  ; 
  Hordwell. 
  Egerton 
  Coll. 
  

  

  P. 
  1529 
  b. 
  Numerous 
  head-bones 
  chiefly 
  of 
  this 
  species, 
  but 
  some 
  

   comparatively 
  large 
  and 
  coarsely 
  marked 
  ; 
  Hordwell. 
  

  

  Egerton 
  Coll. 
  

  

  P. 
  1529 
  C. 
  Vertebras; 
  Hordwell. 
  Egerton 
  Coll. 
  

  

  30295. 
  Vertebras 
  and 
  scales 
  ; 
  Hordwell. 
  Hastings 
  Coll. 
  

  

  48041 
  a. 
  Vertebrae 
  ; 
  Hordwell. 
  John 
  Brovm 
  Coll. 
  

  

  P. 
  1529 
  d. 
  One 
  complete 
  and 
  two 
  imperfect 
  clavicles 
  exhibiting 
  

   fine 
  interrupted 
  ridges 
  of 
  ganoine 
  on 
  the 
  outer 
  face 
  ; 
  

   Hordwell. 
  Egerton 
  Coll. 
  

  

  