﻿206 
  ACTINOPTEKYGII. 
  

  

  Form. 
  Sf 
  Loc. 
  Bathonian 
  : 
  Oxfordshire, 
  Wiltshire, 
  and 
  North- 
  

   amptonshire 
  ; 
  (?) 
  S. 
  Bartolomeo, 
  Verona, 
  Italy. 
  

  

  P. 
  1640. 
  Vomerine 
  dentition 
  figured 
  in 
  Proc. 
  Geol. 
  Assoc, 
  vol. 
  xi. 
  

   pi. 
  iii. 
  fig. 
  20 
  ; 
  Stonesfield 
  Slate, 
  Stonesfield. 
  

  

  Egerton 
  Coll. 
  

  

  P. 
  1646. 
  More 
  imperfect 
  large 
  specimen 
  ; 
  Stonesfield. 
  

  

  Egerton 
  Coll 
  

  

  P. 
  525. 
  Fragment 
  of 
  similar 
  dentition, 
  the 
  undescribed 
  type 
  

   specimen 
  of 
  Pycnodus 
  obtusus, 
  Agassiz, 
  figured 
  in 
  Proc. 
  

   Geol. 
  Assoc, 
  vol. 
  xi. 
  pi. 
  iii. 
  fig. 
  22 
  • 
  Stonesfield. 
  

  

  Egerton 
  Coll. 
  

  

  P. 
  3739. 
  Portion 
  of 
  smaller 
  vomerine 
  dentition 
  ; 
  Forest 
  Marble, 
  

   Atford, 
  near 
  Bath. 
  Enniskillen 
  Coll. 
  

  

  P. 
  1647. 
  Portion 
  of 
  still 
  smaller 
  specimen 
  ; 
  Stonesfield. 
  

  

  Egerton 
  Coll. 
  

  

  39776. 
  Small 
  vomerine 
  dentition, 
  the 
  teeth 
  more 
  closely 
  arranged 
  

   than 
  usual 
  ; 
  Stonesfield. 
  Purchased, 
  1862. 
  

  

  47982. 
  Vomerine 
  dentition 
  0*018 
  in 
  length 
  ; 
  Stonesfield. 
  

  

  Presented 
  by 
  the 
  Hon. 
  Robert 
  Mar 
  sham, 
  1877. 
  

  

  P. 
  3733. 
  Smaller 
  specimen 
  ; 
  Stonesfield. 
  Enniskillen 
  Coll. 
  

  

  P. 
  3732. 
  Left 
  splenial 
  dentition, 
  the 
  type 
  specimen 
  of 
  Pycnodus 
  

   didymus, 
  described 
  and 
  figured 
  by 
  Agassiz, 
  he. 
  cit. 
  ; 
  

   Stonesfield. 
  Enniskillen 
  Coll. 
  

  

  P. 
  3736. 
  Similar 
  specimen, 
  fractured 
  and 
  in 
  counterpart 
  ; 
  Stones- 
  

   field. 
  Enniskillen 
  Coll. 
  

  

  P. 
  1641. 
  Slightly 
  smaller 
  right 
  splenial 
  dentition, 
  showing 
  only 
  the 
  

   bases 
  of 
  the 
  teeth 
  ; 
  Stonesfield. 
  Egerton 
  Coll. 
  

  

  P. 
  1649, 
  P. 
  1666 
  a, 
  b. 
  Five 
  small 
  examples 
  of 
  the 
  splenial 
  dentition, 
  

   one 
  in 
  counterpart 
  ; 
  Stonesfield. 
  Egerton 
  Coll. 
  

  

  P. 
  1652. 
  Imperfect 
  left 
  splenial 
  dentition 
  apparently 
  of 
  this 
  species, 
  

   labelled 
  " 
  Pycnodus 
  ffugii, 
  Ag.," 
  by 
  Agassiz 
  ; 
  Stonesfield. 
  

  

  Egerton 
  Coll. 
  

  

  The 
  following 
  scales 
  are 
  referable 
  either 
  to 
  this 
  or 
  to 
  the 
  preceding 
  

   species 
  : 
  — 
  

  

  P. 
  520, 
  P. 
  3776-77. 
  Type 
  specimens 
  of 
  the 
  so-called 
  Gyrodus 
  per- 
  

   latus, 
  Agassiz 
  (Poiss. 
  Foss. 
  vol. 
  ii. 
  pt. 
  ii. 
  1844, 
  p. 
  236), 
  

  

  