﻿

  394 
  ACTINOPTEETGII. 
  

  

  anterior 
  border. 
  More 
  than 
  40 
  supports 
  of 
  the 
  anal 
  fin 
  

   are 
  preserved, 
  but 
  the 
  series 
  is 
  incomplete. 
  Above 
  the 
  

   expanded 
  haemal 
  at 
  the 
  base 
  of 
  the 
  caudal 
  fin 
  there 
  are 
  

   indications 
  of 
  a 
  series 
  of 
  robust 
  supporting 
  spines 
  which 
  

   also 
  are 
  probably 
  haemal. 
  By 
  exchange, 
  1894. 
  

  

  P. 
  954. 
  Crushed 
  remains 
  of 
  head 
  and 
  trunk 
  ; 
  Solenhofen. 
  The 
  

   cranium 
  is 
  exposed 
  from 
  above, 
  displaying 
  the 
  obtuse 
  

   rostrum 
  in 
  front 
  (PI. 
  XIY. 
  figs. 
  1, 
  1 
  a) 
  and 
  much 
  spar 
  

   beneath 
  the 
  hinder 
  portion. 
  The 
  mandibular 
  dentition 
  is 
  

   also 
  well 
  shown. 
  Egerton 
  Coll. 
  

  

  P. 
  4236. 
  Imperfect 
  trunk 
  with 
  scattered 
  squamation 
  and 
  displaced 
  

   median 
  fins 
  ; 
  Solenhofen. 
  The 
  single 
  expanded 
  haemal 
  is 
  

   well 
  shown 
  in 
  position 
  ; 
  and 
  at 
  the 
  base 
  of 
  the 
  upper 
  

   lobe 
  of 
  the 
  displaced 
  caudal 
  fin 
  there 
  is 
  the 
  series 
  of 
  

   robust 
  supports 
  noted 
  in 
  the 
  last 
  specimen. 
  44 
  supports 
  

   of 
  the 
  anal 
  fin 
  remain, 
  but 
  the 
  series 
  is 
  incomplete. 
  The 
  

   scales 
  are 
  shown 
  to 
  be 
  rhombic, 
  narrowed 
  towards 
  the 
  

   ventral 
  border, 
  and 
  all 
  are 
  smooth. 
  Enniskillen 
  Coll. 
  

  

  Hypsocormus 
  macrodon 
  (Wagner). 
  

  

  1858. 
  Strobilodus 
  giganteus, 
  F. 
  A. 
  Quenstedt 
  (errore), 
  Der 
  Jura, 
  p. 
  808, 
  

  

  pi. 
  xcvii. 
  fig. 
  12. 
  

   1858. 
  Eugnathus 
  macrodon, 
  A. 
  Wagner, 
  Gesch. 
  d. 
  Urwelt, 
  ed. 
  2, 
  vol. 
  ii. 
  

  

  p. 
  471. 
  

   1863. 
  Eugnathus 
  macrodon, 
  A. 
  Wagner, 
  Abh. 
  k. 
  bay. 
  Akad. 
  Wiss., 
  

  

  math.-phys. 
  CI. 
  vol. 
  ix. 
  p. 
  671. 
  

   1883. 
  Strobilodus 
  giganteus, 
  F. 
  A. 
  Quenstedt 
  (error 
  e), 
  Handb. 
  Petrefakt. 
  

  

  ed. 
  3, 
  p. 
  334, 
  woodc. 
  fig. 
  105. 
  

   1887. 
  Hypsocormus 
  macrodon, 
  K. 
  A. 
  von 
  Zittel, 
  Handb. 
  Palaeont. 
  

  

  vol. 
  iii. 
  p. 
  226. 
  

  

  Type. 
  Nearly 
  complete 
  fish 
  ; 
  Palaeontological 
  Museum, 
  Munich. 
  

  

  A 
  large 
  species, 
  attaining 
  a 
  length 
  of 
  about 
  1-5. 
  Head 
  with 
  

   opercular 
  apparatus 
  occupying 
  about 
  one-fifth 
  of 
  the 
  total 
  length 
  to 
  

   the 
  base 
  of 
  the 
  caudal 
  fin. 
  Snout 
  short 
  and 
  obtuse, 
  with 
  large 
  

   vomerine 
  teeth 
  directed 
  almost 
  vertically. 
  External 
  bones 
  and 
  

   anterior 
  fin-rays 
  tuberculated. 
  Scales 
  of 
  the 
  flank 
  in 
  part 
  deeper 
  

   than 
  broad, 
  those 
  of 
  the 
  ventral 
  aspect 
  3 
  or 
  4 
  times 
  as 
  broad 
  as 
  

   deep, 
  all 
  more 
  or 
  less 
  finely 
  tuberculated, 
  many 
  also 
  with 
  a 
  few 
  

   vertical 
  striations 
  near 
  the 
  anterior 
  margin. 
  

  

  Form. 
  Sf 
  Loc. 
  Lower 
  Kimmeridgian 
  (Lithographic 
  Stone) 
  ; 
  

   Bavaria 
  and 
  Wiirtemberg. 
  

  

  