﻿478 
  ACTINOPTERYGIT. 
  

  

  Pholidophorus 
  roemeri, 
  K. 
  Martin, 
  Zeitschr. 
  deutsch. 
  geol. 
  Ges. 
  

  

  vol. 
  xxvi. 
  (1874), 
  p. 
  816, 
  pi. 
  xxix. 
  figs. 
  1, 
  2.— 
  Bhgetic; 
  

  

  Hildesheim, 
  Hanover. 
  

   Pholidophorus 
  taramellii, 
  A. 
  de 
  Zigno, 
  loc. 
  cit. 
  (1891), 
  p. 
  57, 
  

  

  pi. 
  ii. 
  figs. 
  7, 
  8. 
  — 
  Upper 
  Keuper 
  ; 
  Lumezzane, 
  Lombardy. 
  

  

  [University 
  Museum, 
  Padua.] 
  

  

  Fragmentary 
  examples 
  of 
  Pholidophorus 
  have 
  also 
  been 
  recorded 
  

   from 
  the 
  Eheetic 
  of 
  Scania 
  by 
  B. 
  Lundgren, 
  Minneskr. 
  Kongl. 
  

   Fysiogr. 
  Sallsk. 
  Lund, 
  no. 
  v. 
  (1878), 
  p. 
  32, 
  pi. 
  ii. 
  figs. 
  63, 
  72. 
  

  

  A 
  generically 
  indeterminable 
  mandibular 
  ramus 
  from 
  the 
  Lower 
  

   Kimmeridgian 
  of 
  Nusplingen, 
  Wurtemberg, 
  now 
  in 
  the 
  Tubingen 
  

   University 
  Museum, 
  is 
  named 
  Pholidophorus 
  dentatus 
  by 
  F. 
  A. 
  

   Quenstedt, 
  Der 
  Jura 
  (1858), 
  p. 
  810, 
  pi. 
  c. 
  fig. 
  13. 
  

  

  The 
  specimens 
  described 
  as 
  follows, 
  and 
  illustrated 
  by 
  beautiful 
  

   figures, 
  appear 
  to 
  the 
  present 
  writer 
  to 
  differ 
  from 
  the 
  typical 
  

   Pholidophorus 
  solely 
  in 
  the 
  remote 
  position 
  of 
  the 
  dorsal 
  fin, 
  which 
  

   is 
  situated 
  as 
  in 
  the 
  so-called 
  P. 
  maacki 
  (p. 
  477). 
  None 
  of 
  the 
  fin3, 
  

   except 
  the 
  caudal, 
  exhibit 
  more 
  than 
  a 
  few 
  basal 
  fulcra 
  (with 
  the 
  

   possible 
  exception 
  of 
  the 
  anal 
  fin 
  of 
  " 
  Lepidotus 
  sibiricus 
  ") 
  ; 
  but 
  in 
  

   most 
  examples 
  even 
  of 
  the 
  typical 
  P. 
  bechei, 
  the 
  minute 
  fringe 
  of 
  

   fulcra 
  is 
  lost. 
  In 
  the 
  diagnosis 
  of 
  the 
  so-called 
  Baleiichthys, 
  Eohon 
  

   does 
  not 
  mention 
  any 
  distinctive 
  generic 
  characters 
  : 
  — 
  

  

  Lepidotus 
  sibiricus, 
  J. 
  V. 
  Eohon, 
  Mem. 
  Acad. 
  Imp. 
  Sci. 
  St. 
  Peters- 
  

   burg, 
  [7] 
  vol. 
  xxxviii. 
  no. 
  1 
  (1890), 
  p. 
  9, 
  pi. 
  i. 
  fig. 
  12, 
  

   pi. 
  ii. 
  figs. 
  23, 
  24. 
  — 
  Jurassic 
  ; 
  Ust-Balei, 
  Government 
  of 
  

   Irkutsk, 
  Siberia. 
  [Nearly 
  complete 
  fish 
  ; 
  Imperial 
  Academy 
  

   of 
  Sciences, 
  St. 
  Petersburg.] 
  

  

  Baleiichthys 
  graciosa, 
  J. 
  V. 
  Eohon, 
  ibid. 
  p. 
  12, 
  pi. 
  i. 
  fig. 
  8, 
  pi. 
  ii. 
  

   fig. 
  15. 
  — 
  Ibid. 
  [Ditto. 
  Type 
  species 
  of 
  Baleiichthys.'] 
  

  

  Baleiichthys 
  lata, 
  J. 
  Y. 
  Eohon, 
  ibid. 
  p. 
  13, 
  pi. 
  ii. 
  fig. 
  14. 
  — 
  Ibid. 
  

   [Ditto.] 
  

  

  The 
  so-called 
  Pholidophorus 
  stabianus 
  (0. 
  G. 
  Costa, 
  Atti 
  Accad. 
  

   Pontan. 
  vol. 
  v. 
  1850, 
  p. 
  309, 
  pi. 
  vii. 
  figs. 
  3, 
  4), 
  from 
  the 
  Upper 
  

   Jurassic 
  of 
  Castellamare, 
  near 
  Naples, 
  is 
  probably 
  referable 
  to 
  the 
  

   Leptolepidse. 
  

  

  Genus 
  THORACOPTERUS, 
  Bronn. 
  

  

  [Neues 
  Jahrb. 
  1858, 
  p. 
  21.] 
  

  

  Head, 
  trunk, 
  and 
  squamation 
  as 
  in 
  Pholidophorus. 
  Pectoral 
  fins 
  

   excessively 
  enlarged 
  ; 
  pelvic 
  fins 
  comparatively 
  small 
  ; 
  dorsal 
  fin 
  

   small, 
  opposed 
  to 
  the 
  anal 
  fin 
  ; 
  caudal 
  fin 
  deeply 
  forked. 
  

  

  W^ 
  

  

  

  