﻿Airni)^;. 
  371 
  

  

  1844. 
  Notceus 
  laticaudus, 
  L. 
  Agassiz, 
  Poiss. 
  Foss. 
  vol. 
  v. 
  pt. 
  i. 
  p. 
  15 
  ; 
  

   pt. 
  ii. 
  p. 
  127, 
  pi. 
  xlvi. 
  

  

  1851. 
  Amia, 
  J. 
  J. 
  Heckel, 
  Sitzungsb. 
  k. 
  Akad. 
  Wiss., 
  math.-pkys. 
  CI. 
  

   vol. 
  vi. 
  p. 
  223. 
  

  

  1893. 
  Amia 
  laticaudata, 
  A. 
  Andreae, 
  Verbandl. 
  naturh. 
  Vereins 
  Heidel- 
  

   berg, 
  n. 
  s. 
  vol. 
  v. 
  p. 
  12. 
  

  

  Type. 
  Nearly 
  complete 
  fish 
  ; 
  Paris 
  Museum 
  of 
  Natural 
  History. 
  

  

  Tbe 
  type 
  species 
  of 
  the 
  so-called 
  genus 
  Notceus, 
  attaining 
  a 
  length 
  

   of 
  about 
  0*25. 
  Length 
  of 
  "head 
  with 
  opercular 
  apparatus 
  much 
  

   greater 
  than 
  the 
  distance 
  between 
  the 
  paired 
  fins, 
  about 
  equal 
  to 
  

   the 
  maximum 
  depth 
  of 
  the 
  trunk, 
  and 
  contained 
  somewhat 
  more 
  

   than 
  four 
  times 
  in 
  the 
  total 
  length 
  of 
  the 
  fish. 
  Ribs 
  longer 
  than 
  

   the 
  neural 
  arches. 
  Dorsal 
  fin-rays 
  not 
  less 
  than 
  40 
  in 
  number. 
  

  

  Form. 
  Sf 
  Loc. 
  Upper 
  Eocene 
  (Gypsum) 
  : 
  Montmartre, 
  Paris. 
  

  

  Not 
  represented 
  in 
  the 
  Collection. 
  

  

  The 
  following 
  specimens 
  represent 
  an 
  undetermined 
  species 
  as 
  

   large 
  as 
  A. 
  valenciennesi, 
  differing 
  from 
  this 
  apparently 
  in 
  the 
  more 
  

   slender 
  proportions 
  of 
  the 
  trunk 
  : 
  — 
  

  

  44098, 
  Pish 
  in 
  side 
  view 
  wanting 
  the 
  caudal 
  fin, 
  preserved 
  in 
  the 
  

   two 
  halves 
  of 
  a 
  much-pyritized 
  nodule 
  ; 
  supposed 
  to 
  have 
  

   been 
  obtained 
  from 
  the 
  Miocene 
  of 
  Prance. 
  

  

  Purchased, 
  1873. 
  

  

  44638. 
  Anterior 
  half 
  of 
  fish, 
  vertically 
  crushed, 
  in 
  a 
  similar 
  nodule, 
  

   much 
  pyritized 
  ; 
  entered 
  in 
  the 
  Register 
  as 
  from 
  " 
  Au- 
  

   vergne." 
  Presented 
  by 
  Henry 
  Ludlam, 
  Esq., 
  1873. 
  

  

  The 
  following 
  vertebrae 
  of 
  Amia 
  are 
  also 
  not 
  specifically 
  de- 
  

   termined 
  : 
  — 
  

  

  P. 
  6477. 
  Two 
  large 
  vertebral 
  centra, 
  probably 
  from 
  the 
  Upper 
  

   Eocene 
  of 
  the 
  Hampshire 
  Basin. 
  Beckles 
  Coll. 
  

  

  P. 
  1532 
  x. 
  Another 
  large 
  vertebral 
  centrum, 
  much 
  broader 
  than 
  

   deep 
  ; 
  Upper 
  Eocene, 
  Hordwell, 
  Hampshire. 
  Egerton 
  Coll. 
  

  

  P. 
  1532 
  y, 
  z. 
  Smaller 
  centra 
  ; 
  Hordwell. 
  Egerton 
  Coll. 
  

  

  The 
  imperfect 
  fish 
  described 
  as 
  follows, 
  exhibits 
  no 
  characters 
  

   by 
  which 
  it 
  can 
  be 
  distinguished 
  from 
  Amia 
  : 
  — 
  

  

  Amiopsis 
  prisca, 
  R. 
  Kner, 
  Sitzungsb. 
  k. 
  bay. 
  Akad. 
  Wiss., 
  math.- 
  

   phys. 
  CI. 
  vol. 
  xlviii. 
  pt. 
  i. 
  (1863), 
  p. 
  126, 
  pi. 
  i.— 
  Upper 
  

   Cretaceous 
  (Turonian) 
  ; 
  Isonzothal, 
  Istria. 
  [Fish 
  wanting 
  

   dorsal, 
  pelvic, 
  and 
  anal 
  fins.] 
  

  

  2b 
  2 
  

  

  