﻿PHOLIDOPHOEIDJE. 
  485 
  

  

  Pleuropholis 
  laevissima, 
  Egerton. 
  

  

  1834. 
  Pholidophorus 
  Icevissimus, 
  L. 
  Agassiz, 
  Poiss. 
  Foss. 
  Feuill. 
  p. 
  10 
  

  

  (name 
  only). 
  

   1844. 
  Nothosomus 
  Icevissimus, 
  L. 
  Agassiz, 
  Poiss. 
  Foss. 
  vol. 
  ii. 
  pt. 
  ii. 
  

  

  p. 
  289 
  (name 
  only). 
  

   1851. 
  Nothosomus 
  Icevissimus, 
  A. 
  Wagner, 
  Abh. 
  k. 
  bay. 
  Akad. 
  Wiss., 
  

  

  inath.-phys. 
  CI. 
  vol. 
  vi. 
  p. 
  63. 
  

   1858. 
  Pleuropholis 
  Icevissimus, 
  Sir 
  P. 
  Egerton, 
  Figs. 
  & 
  Descript. 
  Brit. 
  

  

  Organic 
  Remains, 
  dec. 
  ix. 
  (Mem. 
  Geol. 
  Surv.), 
  no. 
  7, 
  p. 
  3, 
  pi. 
  vii. 
  

  

  fig. 
  3. 
  

   1863. 
  Pleuropholis 
  Icevissima, 
  A. 
  Wagner, 
  loc. 
  cit. 
  vol. 
  ix 
  v 
  p. 
  668. 
  

   1863. 
  Pleuropholis 
  egertoni, 
  A. 
  Wagner, 
  ibid. 
  p. 
  670. 
  [Name 
  given 
  to 
  

  

  specimen 
  figured 
  by 
  Egerton.] 
  

  

  Type. 
  Imperfect 
  fish 
  ; 
  Palseontological 
  Museum, 
  Munich. 
  

  

  An 
  imperfectly 
  defined 
  species 
  attaining 
  a 
  length 
  of 
  - 
  13. 
  Pro- 
  

   portions 
  very 
  similar 
  to 
  those 
  of 
  the 
  type 
  species, 
  but 
  width 
  of 
  

   caudal 
  pedicle 
  equalling 
  about 
  two-thirds 
  the 
  depth 
  of 
  the 
  flank- 
  

   scales 
  in 
  the 
  middle 
  of 
  the 
  abdominal 
  region, 
  and 
  origin 
  of 
  anal 
  fin 
  

   much 
  more 
  remote. 
  Scales 
  smooth, 
  not 
  serrated. 
  

  

  Form, 
  fy 
  Loc. 
  Lower 
  Kimmeridgian 
  (Lithographic 
  Stone) 
  : 
  Ba- 
  

   varia. 
  

  

  P. 
  1100. 
  Small 
  specimen 
  figured 
  by 
  Egerton, 
  loc. 
  cit. 
  ; 
  Kelheim. 
  

   There 
  is 
  a 
  false 
  appearance 
  of 
  slenderness 
  due 
  to 
  the 
  fact 
  

   that 
  the 
  dorsal 
  and 
  ventral 
  scales 
  are 
  partly 
  broken 
  away 
  

   or 
  obscured 
  by 
  matrix. 
  The 
  curiously-deflected 
  lateral 
  

   line 
  is 
  well 
  shown. 
  Egerton 
  Coll. 
  

  

  P. 
  3598. 
  Another 
  small 
  imperfect 
  specimen, 
  partly 
  distorted 
  and 
  

   shown 
  from 
  the 
  ventro-lateral 
  aspect 
  ; 
  Kelheim. 
  

  

  EnnisTcillen 
  Coll 
  m 
  

  

  P. 
  3615. 
  Remains 
  of 
  a 
  larger 
  fish, 
  probably 
  of 
  this 
  species 
  ; 
  Kel- 
  

   heim. 
  EnnisTcillen 
  Coll. 
  

  

  Pleuropholis 
  thiollieri, 
  Sauvage. 
  

  

  1873. 
  Pleuropholis, 
  V. 
  Thiolliere, 
  Poiss. 
  Foss. 
  Bugey, 
  pt. 
  ii. 
  pi. 
  vi. 
  

  

  fig. 
  6. 
  

   1883. 
  Pleuropholis 
  thiollieri, 
  H. 
  E. 
  Sauvage, 
  Bull. 
  Soc. 
  G6ol. 
  France, 
  

  

  [3] 
  vol. 
  xi. 
  p. 
  499. 
  

  

  Type. 
  Nearly 
  complete 
  fish 
  ; 
  Lyons 
  Museum. 
  

  

  A 
  species 
  attaining 
  a 
  length 
  of 
  about 
  0*12. 
  Length 
  of 
  head 
  with 
  

   opercular 
  apparatus 
  about 
  equalling 
  the 
  maximum 
  depth 
  of 
  the 
  

   trunk 
  and 
  contained 
  nearly 
  five-and-a-half 
  times 
  in 
  the 
  total 
  length 
  

  

  