﻿224 
  A.CTINOPTEKYGII. 
  

  

  28443. 
  Two 
  more 
  imperfect 
  specimens, 
  somewhat 
  larger. 
  One 
  

   displays 
  the 
  posterior 
  process 
  of 
  the 
  parietal, 
  arising 
  

   beneath 
  the 
  outer 
  layer 
  of 
  this 
  bone. 
  Gunnington 
  Coll. 
  

  

  44844. 
  Fish 
  0-13 
  in 
  length, 
  wanting 
  most 
  of 
  the 
  fins 
  but 
  displaying 
  

   part 
  of 
  the 
  ornamented 
  squamation. 
  In 
  this, 
  as 
  in 
  the 
  

   other 
  specimens, 
  the 
  scales 
  seem 
  to 
  have 
  been 
  much 
  more 
  

   robust 
  in 
  the 
  ventral 
  than 
  in 
  the 
  dorsal 
  region. 
  

  

  Presented 
  by 
  Benjamin 
  Bright, 
  Esq., 
  1873. 
  

  

  46333. 
  Well-preserved 
  trunk 
  and 
  cranium 
  of 
  a 
  slightly 
  larger 
  fish, 
  

   with 
  portions 
  of 
  the 
  pelvic 
  and 
  median 
  fins. 
  

  

  Cunnington 
  Coll. 
  

  

  P. 
  1627. 
  Four 
  specimens 
  in 
  various 
  states 
  of 
  preservation, 
  two 
  

   displaying 
  the 
  splenial 
  dentition, 
  and 
  one 
  the 
  hyo-mandi- 
  

   bular 
  bone. 
  Egerton 
  Coll. 
  

  

  P. 
  5592. 
  Remains 
  of 
  head 
  and 
  trunk, 
  displaying 
  scales 
  and 
  splenial 
  

   dentition. 
  Harford 
  Coll. 
  

  

  22403. 
  Remains 
  of 
  small 
  head 
  and 
  trunk, 
  displaying 
  the 
  ridge- 
  

   scales. 
  Purchased, 
  1848. 
  

  

  P. 
  7455. 
  Cranium 
  in 
  side 
  view. 
  History 
  unknown. 
  

  

  33481. 
  Right 
  splenial 
  dentition. 
  Purchased, 
  1858. 
  

  

  The 
  following 
  specimens 
  of 
  vomerine 
  dentition 
  from 
  Swanage 
  

   may 
  pertain 
  to 
  Microdon 
  radiatus, 
  but 
  they 
  are 
  relatively 
  large. 
  

   They 
  differ 
  from 
  the 
  corresponding 
  dentition 
  of 
  M. 
  pagoda 
  only 
  in 
  

   the 
  relatively 
  smaller 
  size 
  of 
  the 
  outer 
  paired 
  teeth: 
  — 
  

  

  21974. 
  Vomerine 
  dentition 
  preserved 
  for 
  a 
  length 
  of 
  O019. 
  

  

  Purchased, 
  1848. 
  

  

  P. 
  6820. 
  A 
  somewhat 
  larger 
  specimen. 
  Purchased, 
  1892. 
  

  

  Microdon 
  bernardi 
  (Thiolliere). 
  

  

  1854. 
  Pycnodus 
  bernardi, 
  V. 
  Thiolliere, 
  Poiss. 
  Foss. 
  Bugey, 
  pt. 
  i. 
  p. 
  17, 
  

  

  with 
  plate. 
  

   1856. 
  Microdon 
  bernardi, 
  J. 
  J. 
  Heckel, 
  Denkschr. 
  k. 
  Akad. 
  Wiss., 
  

  

  math.-naturw. 
  CI. 
  vol. 
  xi. 
  p. 
  201. 
  

   1860. 
  Microdon 
  bernardi, 
  A. 
  Wagner, 
  Gelehrte 
  Anzeig. 
  k. 
  hay. 
  Akad. 
  

  

  Wiss. 
  vol. 
  1. 
  p. 
  396. 
  

  

  Type. 
  Nearly 
  complete 
  fish 
  ; 
  Lyons 
  Museum. 
  

   A 
  species 
  as 
  large 
  as 
  the 
  type 
  species. 
  Maximum 
  depth 
  of 
  trunk 
  

   equalling 
  about 
  two-thirds 
  of 
  the 
  length 
  of 
  the 
  head 
  and 
  trunk 
  

  

  