﻿384 
  ACTINOPTERYGIT. 
  

  

  P. 
  3719. 
  Another 
  large 
  trunk 
  with 
  fragmentary 
  remains 
  of 
  the 
  

   head 
  ; 
  Ohmden. 
  EnnisJcillen 
  Coll. 
  

  

  P. 
  3707. 
  Imperfect 
  fish, 
  ventro-lateral 
  aspect 
  ; 
  Ohmden. 
  

  

  EnnisJcillen 
  Coll. 
  

  

  P. 
  2045. 
  Head 
  and 
  a 
  well-preserved 
  portion 
  of 
  the 
  abdominal 
  

   region 
  of 
  a 
  large 
  fish 
  ; 
  Ohmden. 
  About 
  35 
  supports 
  can 
  

   be 
  counted 
  in 
  the 
  dorsal 
  fin. 
  Egerton 
  Coll. 
  

  

  P. 
  3719 
  a. 
  More 
  imperfect 
  head 
  and 
  portion 
  of 
  abdominal 
  region 
  of 
  

   another 
  fish 
  about 
  0*65 
  in 
  length 
  ; 
  Ohmden. 
  

  

  EnnisJcillen 
  Coll. 
  

  

  32433. 
  Head 
  and 
  opercular 
  apparatus 
  0*185 
  in 
  length 
  ; 
  Curcy, 
  

   Normandy, 
  The 
  proportions 
  of 
  the 
  cranial 
  roof 
  are 
  

   obtained 
  from 
  this 
  specimen. 
  Tesson 
  Coll. 
  

  

  32432, 
  32436. 
  Two 
  fragmentary 
  heads 
  ; 
  Curcy. 
  Tesson 
  Coll. 
  

  

  P. 
  7570. 
  Imperfect 
  head 
  showing 
  the 
  extremity 
  of 
  the 
  snout, 
  with 
  

   part 
  of 
  the 
  right 
  pectoral 
  fin 
  and 
  some 
  anterior 
  scales 
  ; 
  

   Ilminster, 
  Somersetshire. 
  

  

  Pachycormus 
  acutirostris, 
  Agassiz. 
  

  

  1844. 
  Pachycormus 
  acutirostris, 
  L. 
  Agassiz, 
  Poiss. 
  Foss. 
  vol. 
  ii. 
  pt. 
  ii. 
  

   p. 
  114. 
  

  

  Type. 
  Imperfect 
  head. 
  

  

  An 
  imperfectly-known 
  species 
  of 
  moderate 
  or 
  large 
  size. 
  Head 
  

   closely 
  similar 
  to 
  that 
  of 
  P. 
  macropterus 
  , 
  but 
  with 
  a 
  slightly 
  shorter 
  

   snout 
  ; 
  operculum 
  triangular, 
  with 
  somewhat 
  truncated 
  upper 
  

   extremity, 
  nearly 
  as 
  broad 
  as 
  deep; 
  bran 
  chiostegal 
  rays 
  about 
  45-50 
  

   in 
  number. 
  Scales 
  of 
  moderate 
  size, 
  ornamented 
  with 
  a 
  feeble 
  

   rugosity. 
  

  

  Form, 
  fy 
  Log. 
  Upper 
  Lias 
  : 
  Yorkshire. 
  

  

  P. 
  7571. 
  Fragmentary 
  remains 
  of 
  fish 
  about 
  0'55 
  in 
  length, 
  ventral 
  

   aspect 
  ; 
  "Whitby. 
  Purchased. 
  

  

  P. 
  3705 
  c. 
  Anterior 
  half 
  of 
  a 
  similar 
  specimen, 
  displaying 
  the 
  left 
  

   branchiostegal 
  rays 
  ; 
  Whitby. 
  Enniskillen 
  Coll. 
  

  

  P. 
  2038, 
  P. 
  3706. 
  Much 
  fractured 
  remains 
  of 
  the 
  head 
  and 
  abdo- 
  

   minal 
  region 
  of 
  a 
  very 
  large 
  fish, 
  in 
  counterpart 
  ; 
  Whitby. 
  

  

  Egerton 
  &f 
  EnnisJcillen 
  Colls. 
  

  

  P. 
  884 
  a-e. 
  Five 
  heads 
  in 
  various 
  states 
  of 
  preservation 
  ; 
  Whitby. 
  

  

  Egerton 
  Coll. 
  

  

  