﻿450 
  ACTINOPTEEYGII. 
  

  

  Head 
  larger 
  and 
  trunk 
  more 
  slender 
  ; 
  dor- 
  

   sal 
  opposite 
  pelvic 
  fins 
  ; 
  six 
  deepened 
  

   series 
  of 
  flank-scales, 
  with 
  fine 
  serra- 
  

   tions 
  hartmanni 
  (p. 
  466). 
  

  

  Length 
  of 
  head 
  slightly 
  less 
  than 
  maxi- 
  

   mum 
  depth 
  of 
  trunk, 
  which 
  is 
  con- 
  

   tained 
  four 
  times 
  in 
  total 
  length 
  ; 
  

   dorsal 
  opposite 
  pelvic 
  fins 
  ; 
  scales 
  very 
  

   finely 
  pectinated 
  and 
  serrated, 
  with 
  

   inconspicuous 
  lateral 
  line 
  macrocephalus 
  (p. 
  467). 
  

  

  Smaller 
  and 
  more 
  slender, 
  with 
  smaller 
  

  

  head 
  similis 
  (p. 
  470). 
  

  

  Maximum 
  depth 
  of 
  trunk 
  equalling 
  one- 
  

   third 
  of 
  total 
  length 
  ; 
  dorsal 
  opposite 
  

   pelvic 
  fins; 
  scales 
  very 
  finely 
  pectinated 
  

   and 
  serrated, 
  with 
  inconspicuous 
  lat- 
  

   eral 
  line 
  granulatus 
  (p. 
  470). 
  

  

  Smaller 
  and 
  probably 
  more 
  slender 
  ovatus 
  (p. 
  471). 
  

  

  Length 
  of 
  head 
  much 
  less 
  than 
  maximum 
  

   depth 
  of 
  trunk, 
  which 
  is 
  contained 
  

   four 
  times 
  in 
  total 
  length 
  ; 
  dorsal 
  

   opposite 
  pelvic 
  fins 
  ; 
  scales 
  coarsely 
  

   pectinated, 
  and 
  lateral 
  line 
  a 
  ridge 
  on 
  

   caudal 
  region 
  „ 
  ornatus 
  (p. 
  471). 
  

  

  Smaller 
  and 
  more 
  slender 
  micronyx 
  (p. 
  473). 
  

  

  III. 
  Incertae 
  Sedis, 
  the 
  dorsal 
  fin 
  opposed 
  in 
  great 
  

   part 
  to 
  anal 
  fin. 
  

  

  Length 
  of 
  head 
  equalling 
  maximum 
  depth 
  

   of 
  trunk 
  and 
  contained 
  4| 
  times 
  in 
  

   total 
  length 
  ; 
  four 
  deepened 
  series 
  of 
  

   flank-scales 
  gregarius 
  (p. 
  474) 
  . 
  

  

  Smaller 
  head; 
  maximum 
  depth 
  of 
  trunk 
  

   one-third 
  total 
  length 
  ; 
  three 
  deepened 
  

   series 
  of 
  flank-scales 
  dubius 
  (p. 
  474). 
  

  

  Pholidophorus 
  bechei, 
  Agassiz. 
  

   [Plate 
  XII. 
  figs. 
  1, 
  2.] 
  

  

  1822. 
  "Fossil 
  Fish," 
  H. 
  T. 
  De 
  la 
  Beche, 
  Trans. 
  Geol. 
  Soc. 
  [2] 
  vol. 
  i. 
  

  

  p. 
  45, 
  pi. 
  vii. 
  fig. 
  1. 
  

   1844. 
  Pholidophorus 
  bechei, 
  L. 
  Agassiz, 
  Poiss. 
  Foss. 
  vol. 
  ii. 
  pt. 
  i. 
  

  

  p. 
  272, 
  pi. 
  xxxix. 
  figs. 
  1-4. 
  

   1844. 
  Pholidophorus 
  onychius, 
  L. 
  Agassiz, 
  ibid. 
  p. 
  274, 
  pi. 
  xxxix. 
  

  

  figs. 
  5-7. 
  [Nearly 
  complete 
  fish 
  ; 
  Oxford 
  Museum.] 
  

  

  Type. 
  Nearly 
  complete 
  fishes. 
  

  

  The 
  type 
  species, 
  attaining 
  a 
  length 
  of 
  about 
  0*2. 
  Length 
  of 
  

   head 
  with 
  opercular 
  apparatus 
  somewhat 
  less 
  than 
  the 
  maximum 
  

  

  