﻿pholidophoeid^:. 
  457 
  

  

  21334. 
  Fragmentary 
  remains 
  of 
  a 
  similar 
  fish 
  ; 
  Barrow-on-Soar. 
  

  

  Purchased, 
  1847. 
  

  

  25409. 
  A 
  somewhat 
  larger 
  individual; 
  Glastonbury. 
  

  

  Cunnington 
  Coll. 
  

  

  36312. 
  A 
  smaller 
  specimen, 
  partly 
  disturbed 
  and 
  distorted; 
  Barrow- 
  

   on-Soar. 
  Presented 
  by 
  Miss 
  Wilson, 
  1862. 
  

  

  P. 
  3593 
  a. 
  Imperfect 
  fish 
  nearly 
  0*075 
  in 
  length 
  ; 
  Barrow-on-Soar. 
  

  

  EnnisMllen 
  Coll. 
  

  

  P. 
  1055-6. 
  Five 
  specimens 
  varying 
  in 
  size 
  and 
  state 
  of 
  pre- 
  

   servation 
  ; 
  Barrow-on-Soar. 
  Egerton 
  Coll. 
  

  

  P. 
  1056 
  a. 
  Part 
  of 
  the 
  head 
  and 
  abdominal 
  region 
  of 
  a 
  large 
  fish, 
  

   showing 
  the 
  striation 
  of 
  the 
  maxilla 
  and 
  the 
  comparative 
  

   smoothness 
  of 
  the 
  cranial 
  roof 
  and 
  opercular 
  bones 
  ; 
  

   Barrow-on-Soar. 
  Egerton 
  Coll. 
  

  

  Pholidophorus 
  caudalis, 
  sp. 
  nov. 
  

  

  [Plate 
  XVIII. 
  figs. 
  1, 
  2.] 
  

  

  1844. 
  Leptolepis 
  caudalis, 
  L. 
  Agassiz, 
  Poiss. 
  Foss. 
  vol. 
  ii. 
  pt. 
  ii. 
  p. 
  133 
  

   (undefined). 
  

  

  Type. 
  Nearly 
  complete 
  fish 
  ; 
  British 
  Museum. 
  

  

  A 
  slender 
  species, 
  attaining 
  a 
  length 
  of 
  about 
  0*13. 
  Length 
  of 
  

   head 
  with 
  opercular 
  apparatus 
  somewhat 
  exceeding 
  the 
  maximum 
  

   depth 
  of 
  the 
  trunk, 
  and 
  contained 
  about 
  four-and-a-half 
  times 
  

   in 
  the 
  total 
  length 
  of 
  the 
  fish. 
  External 
  rugose 
  ornament 
  very 
  

   feeble, 
  the 
  maxilla 
  marked 
  with 
  few 
  longitudinal 
  striations. 
  Pelvic 
  

   fins 
  arising 
  considerably 
  in 
  advance 
  of 
  the 
  middle 
  point 
  of 
  the 
  

   trunk, 
  but 
  nearer 
  the 
  anal 
  than 
  to 
  the 
  pectorals, 
  and 
  the 
  dorsal 
  

   fin 
  arising 
  'directly 
  opposite. 
  Scales 
  remarkably 
  thin, 
  the 
  hinder 
  

   margin 
  convex 
  and 
  not 
  serrated 
  ; 
  no 
  flank-series, 
  much 
  deeper 
  than 
  

   broad. 
  

  

  Form. 
  Sf 
  hoc. 
  Lower 
  Lias 
  : 
  Dorsetshire. 
  

  

  All 
  the 
  following 
  specimens 
  were 
  obtained 
  from 
  the 
  neighbourhood 
  

   of 
  Lyme 
  Regis 
  : 
  — 
  

  

  P. 
  3664. 
  The 
  type 
  specimen, 
  shown 
  of 
  the 
  natural 
  size 
  in 
  PI. 
  XVIII. 
  

   fig. 
  1. 
  The 
  head 
  is 
  obliquely 
  crushed, 
  showing 
  part 
  of 
  

   the 
  cranial 
  roof 
  and 
  the 
  left 
  side. 
  All 
  the 
  opercular 
  

   elements 
  are 
  distinct, 
  and 
  there 
  appear 
  to 
  be 
  traces 
  of 
  

   enlarged 
  postclavicular 
  scales. 
  The 
  ossifications 
  in 
  the 
  

  

  