﻿114 
  ACTINOPTEEYGII. 
  

  

  the 
  lateral 
  line 
  are 
  also 
  deeply 
  notched 
  ; 
  the 
  dorsal 
  ridge- 
  

   scales 
  are 
  acuminate 
  from 
  the 
  beginning, 
  and 
  many 
  of 
  

   the 
  anterior 
  dorso-lateral 
  scales 
  are 
  very 
  finely 
  tuber- 
  

   culated. 
  Ruff 
  or 
  d 
  Coll. 
  

  

  P. 
  6341. 
  Large 
  head, 
  somewhat 
  fractured 
  and 
  abraded 
  and 
  wanting 
  

   the 
  rostral 
  extremity 
  ; 
  Hastings. 
  The 
  external 
  bones 
  are 
  

   all 
  very 
  coarsely 
  rugose, 
  without 
  tuberculations 
  ; 
  and 
  the 
  

   unworn 
  teeth 
  of 
  the 
  roof 
  of 
  the 
  mouth 
  are 
  distinctly 
  

   acuminate. 
  The 
  operculum 
  has 
  a 
  sinuous 
  anterior 
  margin, 
  

   and 
  its 
  depth 
  is 
  slightly 
  more 
  than 
  twice 
  that 
  of 
  the 
  sub- 
  

   operculum. 
  At 
  least 
  six 
  slender 
  branchiostegal 
  rays 
  are 
  

   fixed 
  to 
  the 
  epihyal 
  ; 
  the 
  ceratohyal 
  is 
  long 
  and 
  much 
  

   constricted 
  mesially 
  ; 
  the 
  hypohyal, 
  shown 
  on 
  each 
  side, 
  

   and 
  noticed 
  in 
  Proc. 
  Zool. 
  Soc. 
  1893, 
  p. 
  563, 
  is 
  short 
  and 
  

   stout, 
  with 
  a 
  deep 
  transverse 
  groove. 
  Behind 
  and 
  below 
  

   the 
  head, 
  the 
  pointed 
  and 
  expanded 
  inferior 
  ends 
  of 
  the 
  

   clavicles 
  are 
  well 
  exhibited, 
  and 
  a 
  few 
  of 
  the 
  anterior 
  

   scales 
  remain. 
  Beckles 
  Coll. 
  

  

  P. 
  6342. 
  A 
  smaller 
  imperfect, 
  abraded 
  and 
  fractured 
  head, 
  dis- 
  

   playing 
  in 
  transverse 
  section 
  the 
  structure 
  of 
  the 
  jaws 
  ; 
  

   Hastings. 
  The 
  section 
  of 
  the 
  rostrum 
  and 
  upper 
  denti- 
  

   gerous 
  bones 
  is 
  described 
  and 
  figured 
  in 
  Proc. 
  Zool. 
  Soc. 
  

   1893, 
  pp. 
  560, 
  562, 
  pi. 
  xlix. 
  fig. 
  4, 
  and 
  the 
  small 
  coronoid 
  

   bone 
  of 
  the 
  mandible, 
  shown 
  on 
  each 
  side, 
  is 
  noticed, 
  ibid. 
  

   p. 
  563. 
  Beckles 
  Coll. 
  

  

  P. 
  6343. 
  A 
  less 
  imperfect, 
  abraded 
  head 
  ; 
  Hastings. 
  Beckles 
  Coll. 
  

  

  P. 
  6344-46. 
  Six 
  much 
  abraded 
  and 
  fragmentary 
  heads, 
  one 
  sliced 
  

   to 
  show 
  the 
  comparatively 
  slight 
  ossification 
  of 
  the 
  inner 
  

   elements 
  of 
  the 
  cranium 
  ; 
  Hastings. 
  Beckles 
  Coll. 
  

  

  P. 
  1124. 
  Waterworn 
  specimen 
  of 
  the 
  cranium 
  with 
  some 
  of 
  the 
  

   anterior 
  scales 
  and 
  ring-vertebrae 
  ; 
  Hastings. 
  The 
  ex- 
  

   occipital 
  and 
  pro-otic 
  bones 
  are 
  seen 
  in 
  contact, 
  and 
  the 
  

   coarsely 
  cancellated 
  structure 
  of 
  all 
  the 
  inner 
  bones 
  is 
  

   displayed. 
  The 
  supratemporal 
  plates, 
  of 
  which 
  the 
  median 
  

   pair 
  are 
  preserved, 
  overlap 
  the 
  hinder 
  border 
  of 
  the 
  

   cranium. 
  Egerton 
  Coll. 
  

  

  P. 
  7415. 
  Hinder 
  portion 
  of 
  head, 
  with 
  some 
  anterior 
  scales, 
  showing 
  

   the 
  small, 
  triangular 
  post-temporal 
  bone 
  and 
  part 
  of 
  the 
  

   parasphenoid 
  ; 
  Sussex. 
  

  

  Transferred 
  from 
  the 
  Old 
  Indian 
  Museum, 
  1880. 
  

  

  