﻿On 
  the 
  Fishes 
  of 
  the 
  Family 
  ]Vlacrorliampli03lda3. 
  17 
  

  

  Xystreurys 
  brasiliensis, 
  sp. 
  n. 
  

  

  D. 
  S3. 
  A. 
  66. 
  Scales 
  85. 
  Depth 
  2^ 
  in 
  length 
  . 
  Eye 
  3 
  

   ill 
  head. 
  

  

  Total 
  iengtli 
  170 
  mm. 
  

   ('ape 
  Frio, 
  40 
  fathoms. 
  

  

  III. 
  — 
  A 
  S_t/7topsis 
  of 
  the 
  Fishes 
  of 
  the 
  Familj/ 
  

   , 
  Macrorhanii)hosidse. 
  ' 
  By 
  C. 
  Tate 
  RegAN, 
  M.A. 
  

  

  (Published 
  by 
  permission 
  of 
  the 
  Trustees 
  of 
  the 
  British 
  Museum.) 
  

  

  Synopsis 
  of 
  the 
  Genera 
  and 
  Species. 
  

   I. 
  First 
  dorsal 
  spine 
  quite 
  short. 
  

  

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

   3 
  well-developed 
  and 
  a 
  fourth, 
  much 
  smaller 
  than 
  the 
  others. 
  

  

  1. 
  Dorsal 
  fins 
  separated 
  by 
  an 
  interspace, 
  or 
  connected 
  by 
  a 
  

   series 
  of 
  short 
  isolated 
  spines 
  ; 
  distaace 
  from 
  base 
  of 
  dorsal 
  

   spine 
  to 
  vent 
  not 
  or 
  but 
  little 
  more 
  than 
  ^ 
  that 
  from 
  head 
  

   to 
  caudal 
  fin. 
  [Macrorhamphosus.) 
  

  

  a. 
  Diameter 
  of 
  eye 
  not 
  less 
  than 
  postorbital 
  length 
  of 
  head. 
  

  

  Depth 
  of 
  body 
  3^ 
  to 
  4^ 
  in 
  length; 
  dorsal 
  spine 
  

   inserted 
  above 
  origin 
  or 
  anterior 
  part 
  of 
  anal, 
  

   strong, 
  serrated, 
  | 
  to 
  § 
  of 
  distance 
  from 
  oper- 
  

   culum 
  to 
  caudal 
  scolopax. 
  

  

  Depth 
  of 
  body 
  3 
  to 
  3^ 
  in 
  length 
  ; 
  dorsal 
  spine 
  

   inserted 
  alaove 
  ventj 
  strong, 
  serrated, 
  \ 
  to 
  f 
  of 
  

   distance 
  from 
  operculum 
  to 
  caudal 
  elevatus. 
  

  

  Depth 
  of 
  body 
  4 
  to 
  i\ 
  in 
  length 
  ; 
  dorsal 
  spine 
  in- 
  

   serted 
  a 
  little 
  in 
  advance 
  of 
  vent, 
  strong, 
  ser- 
  

   rated, 
  when 
  laid 
  back 
  reaching 
  caudal 
  fin 
  ... 
  . 
  sagifue. 
  

  

  Depth 
  of 
  body 
  4| 
  to 
  6^ 
  in 
  length 
  ; 
  dorsal 
  spine 
  in- 
  

   serted 
  in 
  advance 
  of 
  vent, 
  serrated 
  or 
  not, 
  \ 
  to 
  

   f 
  distance 
  from 
  head 
  to 
  caudal 
  tin, 
  when 
  laid 
  

   back 
  nearly 
  or 
  quite 
  reaching 
  origin, 
  or 
  some- 
  

   times 
  posterior 
  end 
  of 
  soft 
  dorsal 
  gracilis. 
  

  

  Depth 
  of 
  body 
  4^ 
  to 
  5 
  in 
  length 
  ; 
  dorsal 
  spine 
  in- 
  

   serted 
  in 
  advance 
  of 
  vent, 
  smooth 
  or 
  feebly 
  

   serrated, 
  i\ 
  to 
  f 
  of 
  distance 
  from 
  operculum 
  

   to 
  caudal 
  fin, 
  when 
  laid 
  back 
  not 
  reaching 
  soft 
  

   dorsal 
  japonicus. 
  

  

  b. 
  Diameter 
  of 
  eye 
  less 
  than 
  postorbital 
  length 
  of 
  head. 
  

  

  velitaris. 
  

  

  Ann. 
  & 
  Mag. 
  N. 
  Hist. 
  Ser. 
  8. 
  Vol. 
  xiii. 
  2 
  

  

  