﻿376 
  ACTINOPTEETGII. 
  

  

  Sauropsis 
  latus, 
  Agassiz. 
  

  

  1832. 
  Sauropsis 
  latus, 
  L. 
  Agassiz, 
  Neues 
  Jahrb. 
  p. 
  142. 
  

  

  1833-34. 
  Sauropsis 
  latus, 
  L. 
  Agassiz, 
  Poiss. 
  Foss. 
  vol. 
  ii. 
  pt. 
  i. 
  p. 
  11 
  ; 
  

  

  pt. 
  ii. 
  p. 
  122. 
  

   1860. 
  Sauropsis 
  lata—Pachycormus 
  elongatus 
  (?), 
  A. 
  Wagner, 
  Gelehrte 
  

  

  Anzeig. 
  k. 
  bay. 
  Akad. 
  Wiss. 
  vol. 
  1. 
  p. 
  224. 
  

  

  Type. 
  Nearly 
  complete 
  fish 
  ; 
  unknown. 
  

  

  A 
  large 
  species, 
  attaining 
  a 
  length 
  of 
  about 
  0*7. 
  Length 
  of 
  head 
  

   with 
  opercular 
  apparatus 
  equalling 
  about 
  one-quarter 
  of 
  the 
  total 
  

   length 
  to 
  the 
  base 
  of 
  the 
  caudal 
  fin, 
  and 
  not 
  exceeding 
  the 
  maximum 
  

   depth 
  of 
  the 
  trunk. 
  Pelvic 
  fins 
  arising 
  slightly 
  nearer 
  to 
  the 
  anal 
  

   than 
  to 
  the 
  pectorals 
  ; 
  origin 
  of 
  dorsal 
  fin 
  opposite 
  to, 
  or 
  even 
  

   somewhat 
  behind 
  that 
  of 
  the 
  anal. 
  Scales 
  exhibiting 
  a 
  few 
  vertical 
  

   wrinkles 
  contiguous 
  and 
  parallel 
  with 
  the 
  anterior 
  margin. 
  

  

  Form. 
  Sf 
  Log. 
  Upper 
  Lias 
  : 
  Wurtemberg 
  and 
  Baden. 
  

  

  20658 
  a. 
  Imperfect 
  large 
  specimen, 
  wanting 
  the 
  caudal 
  fin 
  ; 
  Boll, 
  

   "Wurtemberg. 
  Purchased, 
  1846. 
  

  

  P. 
  3715. 
  Imperfect 
  trunk 
  of 
  a 
  large 
  fish, 
  displaying 
  part 
  of 
  the 
  

   squamation 
  ; 
  Ohmden, 
  Wurtemberg. 
  EnnisHllen 
  Coll. 
  

  

  P. 
  2043. 
  Imperfect 
  specimen, 
  about 
  0*4 
  in 
  length 
  ; 
  Boll. 
  The 
  

   marginal 
  teeth 
  are 
  shown, 
  while 
  the 
  form 
  and 
  proportions 
  

   of 
  the 
  mandible, 
  operculum, 
  and 
  suboperculum 
  are 
  indi- 
  

   cated. 
  Egerton 
  Coll. 
  

  

  Genus 
  PROSAUROPSIS, 
  Sauvage. 
  

   [Bull. 
  Soc. 
  Sci. 
  Yonne, 
  vol. 
  xlviii. 
  1894, 
  p. 
  4.] 
  

  

  An 
  elongated 
  fish, 
  differing 
  from 
  Sauropsis, 
  according 
  to 
  the 
  

  

  original 
  description, 
  merely 
  in 
  the 
  non-extension 
  of 
  the 
  anal 
  fin, 
  

  

  which 
  has 
  as 
  short 
  a 
  base-line 
  as 
  the 
  dorsal, 
  and 
  perhaps 
  in 
  the 
  

   development 
  of 
  slight 
  vertebral 
  elements. 
  

  

  Prosauropsis 
  elongatus, 
  Sauvage. 
  

  

  1875. 
  Pachycormus? 
  elongatus, 
  H. 
  E. 
  Sauvage, 
  Bibl. 
  Eeole 
  Hautes 
  

  

  Etudes, 
  vol. 
  xiv. 
  no. 
  1, 
  p. 
  23, 
  pi. 
  ii. 
  fig. 
  1. 
  

   1891. 
  Aspidorhynchus 
  colombi, 
  H. 
  E. 
  Sauvage, 
  Bull. 
  Soc. 
  Sci. 
  Yonne, 
  

  

  vol. 
  xlv. 
  pt. 
  ii. 
  p. 
  32 
  (name 
  only). 
  

   1894. 
  Prosauropsis 
  elongatus, 
  H. 
  E. 
  Sauvage, 
  ibid. 
  vol. 
  xlviii. 
  p. 
  4, 
  

  

  pi. 
  i. 
  (misprinted 
  Protosauropsis). 
  

  

  Type. 
  Imperfect 
  fish, 
  ventral 
  aspect. 
  

  

  The 
  type 
  species, 
  attaining 
  a 
  length 
  of 
  about 
  5. 
  Maximum 
  

   depth 
  of 
  trunk 
  about 
  three 
  times 
  the 
  width 
  of 
  the 
  caudal 
  pedicle, 
  

  

  