﻿18 
  ACTINOPTEKYGII. 
  

  

  slightly 
  shorter 
  than 
  the 
  upper 
  jaw. 
  The 
  superficial 
  

   rugae 
  on 
  the 
  articulo-arigular 
  bone 
  appear 
  to 
  be 
  directed 
  

   vertically. 
  Purchased, 
  1866. 
  

  

  P. 
  4878. 
  Well-preserved 
  head 
  0*075 
  in 
  length. 
  Purchased, 
  1885. 
  

  

  P. 
  3791 
  b. 
  Crushed 
  head 
  0*088 
  in 
  length, 
  displaying 
  the 
  dentition 
  

   and 
  the 
  articulo 
  -angular 
  bone 
  of 
  the 
  mandible. 
  

  

  Ennislcillen 
  Coll. 
  

  

  P. 
  3791 
  a. 
  Hinder 
  portion 
  of 
  skull 
  and 
  mandible 
  with 
  well-preserved 
  

   laniary 
  teeth. 
  Portions 
  of 
  the 
  right 
  operculum, 
  clavicle, 
  

   and 
  some 
  of 
  the 
  neural 
  arches 
  of 
  the 
  trunk 
  are 
  preserved 
  

   behind. 
  Enniskillen 
  Coll. 
  

  

  43008. 
  Mandible, 
  left 
  outer 
  aspect, 
  with 
  teeth. 
  Purchased, 
  1871. 
  

  

  (ii.) 
  Upper 
  Lias, 
  Whitby. 
  

   39153. 
  Abraded 
  skull 
  and 
  mandible 
  0*095 
  in 
  length, 
  right 
  lateral 
  

   aspect 
  ; 
  probably 
  obtained 
  from 
  Whitby. 
  

  

  Bowerbanh 
  Coll. 
  

  

  (iii.) 
  Upper 
  Lias, 
  Wurtemberg. 
  

  

  P. 
  3792. 
  Head 
  about 
  0*11 
  in 
  length, 
  somewhat 
  fractured 
  and 
  

   displaying 
  part 
  of 
  the 
  parasphenoid 
  ; 
  Ohmden. 
  

  

  Ennislcillen 
  Coll. 
  

  

  P. 
  960. 
  Nearly 
  similar 
  specimen 
  ; 
  Ohmden. 
  Egerton 
  Coll. 
  

  

  P. 
  960 
  a. 
  Remains 
  of 
  skull 
  and 
  mandible 
  showing 
  the 
  hinder 
  half 
  of 
  

   the 
  parasphenoid 
  and 
  part 
  of 
  the 
  right 
  quadrate 
  ; 
  Ohmden. 
  

   Minute 
  conical 
  teeth 
  appear 
  in 
  side 
  view 
  either 
  on 
  the 
  

   parasphenoid 
  or 
  on 
  the 
  vomer. 
  Egerton 
  Coll. 
  

  

  P. 
  960 
  b. 
  Four 
  imperfect 
  heads 
  ; 
  Ohmden. 
  Egerton 
  Coll. 
  

  

  20660-61. 
  Two 
  imperfect 
  heads 
  ; 
  Boll. 
  Purchased, 
  1846. 
  

  

  The 
  following 
  species 
  have 
  also 
  been 
  partially 
  defined, 
  the 
  two 
  last 
  

   without 
  figures 
  : 
  — 
  

  

  Belonorhynchus 
  gypsophilus 
  : 
  Saurichthys 
  gypsophilus, 
  O. 
  M. 
  Heis, 
  

  

  Geogn. 
  Jahresh. 
  1891 
  (1892), 
  p. 
  i53, 
  fig. 
  6.— 
  Keuper 
  ; 
  

  

  Altenmiinster, 
  N. 
  Franconia. 
  [Portion 
  of 
  upper 
  jaw.] 
  

   Belonorhynchus 
  intermedius, 
  F. 
  Bassani, 
  Atti 
  Soc. 
  Ital. 
  Sci. 
  Nat. 
  

  

  vol. 
  xxix. 
  (1886), 
  p. 
  34. 
  — 
  Keuper 
  ; 
  Besano, 
  Lombardy. 
  

  

  [Hinder 
  portion 
  of 
  trunk 
  ; 
  Milan 
  Museum.] 
  

   Belonorhynchus 
  stoppanii, 
  F. 
  Bassani, 
  ibid. 
  p. 
  34. 
  — 
  Ibid. 
  [Nearly 
  

  

  complete 
  fish 
  ; 
  Milan 
  Museum.] 
  

  

  