﻿18 
  Mr. 
  C. 
  T. 
  Regan 
  — 
  A 
  Si/7iopsis 
  of 
  

  

  2. 
  Dorsal 
  fins 
  coutinuoiis 
  at 
  base 
  ; 
  spinous 
  dorsal 
  of 
  7 
  spines, 
  the 
  

   last 
  5 
  nearly 
  equidistant 
  and 
  gradually 
  decreasing 
  in 
  length 
  

   backwards 
  ; 
  adults 
  with 
  a 
  patch 
  of 
  bristles 
  on 
  nape. 
  (Nvto- 
  

   pofftm.) 
  

  

  a. 
  Distance 
  from 
  base 
  of 
  dorsal 
  spine 
  to 
  vent 
  § 
  to 
  f 
  that 
  from 
  

  

  head 
  to 
  caudal 
  fin 
  lilUei. 
  

  

  b. 
  Distance 
  from 
  base 
  of 
  dorsal 
  spine 
  to 
  vent 
  about 
  equal 
  to 
  

  

  that 
  from 
  head 
  to 
  caudal 
  fin. 
  

   «. 
  Origin 
  of 
  soft 
  dorsal 
  nearer 
  to 
  base 
  of 
  second 
  dorsal 
  spiue 
  

   than 
  to 
  edge 
  of 
  back 
  in 
  front 
  of 
  spinous 
  dorsal. 
  

  

  sclioteli. 
  

  

  ^. 
  Origin 
  of 
  soft 
  dorsal 
  nearer 
  to 
  edge 
  of 
  back 
  in 
  front 
  of 
  

   spinous 
  dorsal 
  than 
  to 
  base 
  of 
  second 
  dorsal 
  spine. 
  

   Dorsal 
  spine 
  stout, 
  with 
  numerous 
  serrations, 
  in- 
  

   serted 
  above 
  base 
  of 
  soft 
  dorsal 
  fernandezianus. 
  

  

  Dorsal 
  spine 
  rather 
  slender, 
  with 
  few 
  serrations, 
  

  

  inserted 
  above 
  caudal 
  peduncle 
  xenoso77ia, 
  

  

  B. 
  On 
  each 
  side 
  of 
  the 
  back 
  two 
  series 
  of 
  bony 
  plates, 
  each 
  series 
  

   with 
  4 
  well-developed 
  plates 
  ; 
  dorsal 
  fins 
  continuous 
  at 
  base, 
  

   the 
  spinous 
  dorsal 
  with 
  7 
  spines. 
  {Centriscops.) 
  

  

  1. 
  Second 
  dorsal 
  spine 
  inserted 
  above 
  vent 
  or 
  origin 
  of 
  anal 
  ; 
  base 
  

  

  of 
  spinous 
  dorsal 
  nearly 
  horizontal. 
  . 
  . 
  . 
  sinuosus. 
  

  

  2. 
  Second 
  dorsal 
  spine 
  inserted 
  above 
  anal 
  fin 
  ; 
  base 
  of 
  spinous 
  

  

  dorsal 
  nearly 
  vertical. 
  

  

  Dorsal 
  spine 
  ^ 
  distance 
  from 
  head 
  to 
  caudal 
  ; 
  dia- 
  

   meter 
  of 
  eye 
  not 
  greater 
  than 
  depth 
  of 
  cheek, 
  

   scarcely 
  more 
  than 
  j 
  length 
  of 
  snout 
  (in 
  a 
  

   specimen 
  of 
  135 
  mm.) 
  hwnerosus. 
  

  

  Dorsal 
  spine 
  \ 
  distance 
  from 
  head 
  to 
  caudal 
  ; 
  

   diameter 
  of 
  eye 
  twice 
  depth 
  of 
  cheek, 
  more 
  

   than 
  \ 
  length 
  of 
  snout 
  (in 
  an 
  adult 
  specimen), 
  ohlixpius. 
  

  

  II. 
  First 
  dorsal 
  spine 
  f 
  as 
  long 
  as 
  second, 
  which 
  is 
  as 
  long 
  as 
  head, 
  

   distance 
  from 
  head 
  to 
  caudal 
  tin, 
  or 
  depth 
  of 
  body. 
  {Scolopac- 
  

   ichthys.) 
  armatus. 
  

  

  1. 
  Macroehamphosus, 
  Lacep., 
  1803. 
  

  

  Hist. 
  Nat. 
  Poiss. 
  v. 
  p. 
  136. 
  

  

  CeritriscKS 
  (non 
  Linn.), 
  Cuv. 
  Regne 
  Anim. 
  ii. 
  p. 
  350 
  (1817). 
  

   Meter 
  ognatlms, 
  Gronow, 
  Cat. 
  Fish. 
  p. 
  147 
  (1854). 
  

   Orthichthys, 
  Gill, 
  Proc. 
  Acad. 
  Philad. 
  1862, 
  p. 
  234. 
  

  

  1. 
  Macrorhaniphosus 
  scolopa.v, 
  Linn. 
  

  

  Centriscus 
  scolopa.v, 
  Giiuth. 
  Cat. 
  Fish. 
  iii. 
  p. 
  519 
  (1861). 
  

  

  North 
  Atlantic 
  and 
  Meditevvanean. 
  

  

  Specimens 
  in 
  the 
  Biitish 
  JMuseum 
  from 
  England, 
  Madeira, 
  

   Spain, 
  and 
  Italy. 
  

  

  