﻿144 
  ACTINOPTEKYGII. 
  

  

  P. 
  6396. 
  Much 
  fractured 
  large 
  specimen 
  showing 
  the 
  characteristic 
  

   operculum 
  and 
  teeth, 
  and 
  traces 
  of 
  the 
  superior 
  lateral 
  

   line. 
  Beckles 
  Coll. 
  

  

  P. 
  3566. 
  Fish 
  0-32 
  in 
  length, 
  with 
  comparatively 
  hroad 
  operculum. 
  

  

  Enniskillen 
  Coll. 
  

  

  37774. 
  Imperfect 
  fish 
  about 
  033 
  in 
  length. 
  Purchased, 
  1863. 
  

  

  40089. 
  Fish 
  0-3 
  in 
  length, 
  with 
  abraded 
  and 
  fractured 
  head-bones, 
  

   but 
  displaying 
  the 
  marginal 
  teeth. 
  Purchased, 
  1866. 
  

  

  42435. 
  Head 
  and 
  anterior 
  flank-scales, 
  the 
  type 
  specimen 
  of 
  Tetra- 
  

   gonolepis 
  leachi 
  described 
  and 
  figured 
  by 
  Agassiz, 
  loc. 
  cit. 
  

   The 
  relatively 
  large 
  size 
  of 
  the 
  tubercles 
  upon 
  the 
  bones 
  

   of 
  the 
  snout 
  is 
  well 
  shown. 
  

  

  Presented 
  by 
  Kenneth 
  Murchison, 
  Esq., 
  1872. 
  

  

  44859. 
  Remains 
  of 
  head 
  and 
  anterior 
  flank-scales. 
  

  

  Presented 
  by 
  Benjamin 
  Bright, 
  Esq., 
  1873. 
  

  

  P. 
  350. 
  Head 
  and 
  abdominal 
  region 
  of 
  a 
  small 
  individual 
  probably 
  

   of 
  this 
  species. 
  Tuberculations 
  are 
  almost 
  absent 
  upon 
  

   the 
  suboperculum 
  and 
  the 
  lower 
  portion 
  of 
  the 
  operculum, 
  

   perhaps 
  in 
  consequence 
  of 
  abrasion 
  ; 
  and 
  some 
  of 
  the 
  

   large 
  unicuspid 
  teeth 
  are 
  conspicuous. 
  Very 
  large 
  median 
  

   scales 
  occur 
  in 
  front 
  of 
  the 
  anal 
  fin, 
  and 
  the 
  vertical 
  series 
  

   of 
  flank-scales 
  above 
  the 
  base-line 
  of 
  this 
  fin 
  are 
  slightly 
  

   reflexed 
  forwards. 
  Purchased, 
  1881. 
  

  

  41214. 
  Small 
  fish 
  0-245 
  in 
  length, 
  with 
  comparatively 
  feeble 
  

   ornament, 
  and 
  displaying 
  large 
  unicuspid 
  teeth 
  in 
  the 
  

   mandible. 
  Purchased, 
  1868. 
  

  

  P. 
  3570. 
  More 
  imperfect 
  small 
  specimen. 
  Enniskillen 
  Coll. 
  

  

  P. 
  7428. 
  Much 
  abraded 
  small 
  specimen 
  probably 
  of 
  this 
  species. 
  

  

  18514. 
  Imperfect 
  head 
  and 
  trunk 
  of 
  a 
  fish 
  about 
  0-35 
  in 
  length, 
  

   displaying 
  the 
  operculum 
  and 
  facial 
  bones, 
  the 
  marginal 
  

   teeth, 
  and 
  a 
  large 
  portion 
  of 
  the 
  squamation 
  ; 
  Upper 
  Lias, 
  

   Boll, 
  Wiirtemberg. 
  Purchased, 
  1844. 
  

  

  P. 
  1592. 
  Head 
  vertically 
  crushed 
  and 
  wanting 
  the 
  extremity 
  of 
  the 
  

   snout 
  ; 
  with 
  some 
  of 
  the 
  anterior 
  dorsal 
  and 
  dorso-lateral 
  

   scales. 
  Egerton 
  Coll. 
  

  

  P. 
  3540. 
  Small 
  head 
  with 
  dentition. 
  Enniskillen 
  Coll. 
  

  

  39144. 
  More 
  imperfect 
  small 
  head 
  with 
  dentition. 
  Bowerbank 
  Coll, 
  

  

  