﻿300 
  

  

  ACTINOPTERYGII. 
  

  

  P. 
  3594. 
  Type 
  specimen, 
  wanting 
  the 
  head 
  and 
  dorsal 
  margin, 
  and 
  

   not 
  exhibiting 
  the 
  " 
  lateral 
  line 
  " 
  so 
  conspicuously 
  as 
  

   indicated 
  in 
  the 
  drawing 
  published 
  by 
  Agassiz 
  ; 
  Barrow- 
  

   on-Soar. 
  EnnisJcillen 
  Coll. 
  

  

  P. 
  887 
  a. 
  Another 
  less 
  imperfect 
  specimen, 
  shown 
  of 
  the 
  natural 
  

   size 
  in 
  PI. 
  VII. 
  fig. 
  1 
  ; 
  locality 
  unknown, 
  but 
  probably 
  

   from 
  Barrow-on-Soar. 
  The 
  definition 
  of 
  the 
  species 
  given 
  

   above 
  is 
  based 
  upon 
  this 
  specimen. 
  The 
  teeth 
  are 
  very 
  

   imperfectly 
  displayed. 
  Impressions 
  of 
  the 
  neural 
  arches 
  

   above 
  the 
  notochord 
  are 
  distinct, 
  and 
  there 
  are 
  also 
  traces 
  

   of 
  ribs 
  besides 
  the 
  robust 
  haemal 
  arches 
  at 
  the 
  base 
  of 
  the 
  

   caudal 
  fin. 
  Egerton 
  Coll. 
  

  

  P. 
  888. 
  Another 
  larger 
  specimen 
  about 
  0*1 
  in 
  length 
  ; 
  Barrow-on- 
  

   Soar. 
  The 
  opercular 
  and 
  branchiostegal 
  apparatus 
  is 
  

   especially 
  well 
  shown, 
  and 
  all 
  the 
  fins 
  are 
  preserved. 
  

  

  Egerton 
  Coll. 
  

  

  P. 
  6096. 
  Remains 
  of 
  head, 
  opercular 
  apparatus, 
  and 
  pectoral 
  arch, 
  

   probably 
  of 
  this 
  species 
  ; 
  Lower 
  Lias, 
  Wilmcote, 
  near 
  

   Stratford-on-Avon. 
  

  

  Presented 
  by 
  the 
  Rev. 
  H. 
  E. 
  Lowe, 
  1889. 
  

  

  Eugnathus 
  microlepidotus, 
  Agassiz. 
  

  

  1833. 
  Urceus 
  microlepidotus, 
  L. 
  Agassiz, 
  Poiss. 
  Foss. 
  vol. 
  ii. 
  pt. 
  i. 
  p. 
  12. 
  

   1839. 
  Eugnathus 
  microlepidotus, 
  L. 
  Agassiz, 
  Neues 
  Jahrb. 
  p. 
  118. 
  

   1844. 
  Eugnathus 
  microlepidotus, 
  L. 
  Agassiz, 
  Poiss. 
  Foss. 
  vol. 
  ii. 
  pt. 
  ii. 
  

  

  p. 
  104. 
  

   1863. 
  Eugnathus 
  microlepidotus, 
  A. 
  Wagner, 
  Sitzungsb. 
  k. 
  hay. 
  Akad. 
  

  

  Wiss., 
  math.-phys. 
  CI. 
  vol. 
  ix. 
  p. 
  673. 
  

  

  Type. 
  Imperfect 
  fish 
  ; 
  Palseontological 
  Museum, 
  Munich. 
  

  

  A 
  species 
  of 
  moderate 
  size, 
  attaining 
  a 
  length 
  of 
  about 
  0'4. 
  

   Length 
  of 
  head 
  with 
  opercular 
  apparatus 
  much 
  exceeding 
  the 
  

   maximum 
  depth 
  of 
  the 
  trunk, 
  and 
  contained 
  about 
  four 
  times 
  in 
  

   the 
  total 
  length 
  of 
  the 
  fish. 
  Head 
  elongated 
  and 
  the 
  external 
  bones 
  

   conspicuously 
  ornamented 
  with 
  tubercles 
  and 
  delicate 
  rugse 
  ; 
  teeth 
  

   on 
  the 
  dentary 
  bone 
  large 
  and 
  very 
  robust. 
  Fins 
  apparently 
  as 
  in 
  

   the 
  type 
  species. 
  Principal 
  scales 
  completely 
  covered 
  on 
  their 
  

   exposed 
  face 
  with 
  a 
  delicate 
  striate 
  ornament. 
  

  

  A 
  fish 
  from 
  the 
  Lithographic 
  Stone 
  of 
  Cirin, 
  Ain, 
  France, 
  not 
  

   readily 
  distinguished 
  from 
  this 
  species, 
  is 
  named 
  Eugnathus 
  jorce- 
  

   longus 
  by 
  V. 
  Thiolliere, 
  Ann. 
  Sci. 
  Phys. 
  & 
  Nat. 
  Lyon, 
  [2] 
  vol. 
  iii. 
  

  

  