﻿526 
  

  

  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  

  

  remainder 
  of 
  j&n 
  clear; 
  caudal 
  fin 
  with 
  black, 
  oblique 
  bars 
  on 
  both 
  

   lobes, 
  varying 
  from 
  2 
  on 
  the 
  upper 
  and 
  3 
  on 
  the 
  lower 
  in 
  the 
  smallest 
  

   specimen 
  and 
  4 
  bars 
  on 
  both 
  lobes 
  in 
  the 
  larger 
  specimens 
  (table 
  3) 
  ; 
  

   bars 
  on 
  the 
  lower 
  lobe 
  more 
  distinct 
  and 
  slightly 
  wider 
  than 
  those 
  of 
  

   the 
  upper; 
  a 
  diffuse, 
  blackish, 
  irregular, 
  and 
  broken 
  spot 
  near 
  midbase 
  

   of 
  caudal 
  fin. 
  

  

  Named 
  oligospilus 
  in 
  reference 
  to 
  the 
  faint, 
  scattered, 
  dusky 
  spots 
  

   on 
  the 
  sides 
  of 
  the 
  body. 
  

  

  Geographical 
  distribution. 
  — 
  Known 
  from 
  the 
  Persian 
  Gulf 
  and 
  proba- 
  

   bly 
  the 
  Gulf 
  of 
  Oman 
  (Blegvad 
  and 
  L0ppenthin, 
  1944, 
  p. 
  136). 
  It 
  

   may 
  occur 
  more 
  widely, 
  especially 
  along 
  the 
  Indian 
  coast, 
  than 
  is 
  now 
  

   known. 
  

  

  Remarks. 
  — 
  This 
  species 
  is 
  related 
  to 
  luzonius 
  and 
  tragula; 
  con- 
  

   siderably 
  more 
  to 
  the 
  latter 
  species. 
  It 
  differs 
  from 
  tragula 
  chiefly 
  in 
  

   the 
  reduced 
  number 
  of 
  oblique 
  bars 
  on 
  the 
  caudal 
  fin 
  (table 
  3) 
  and 
  in 
  

   the 
  reduced 
  number 
  of 
  dark 
  spots 
  on 
  the 
  sides 
  of 
  the 
  body, 
  which 
  are 
  

   decidedly 
  more 
  diffuse 
  and 
  larger, 
  and 
  absent 
  on 
  the 
  belly. 
  It 
  differs 
  

   from 
  tragula 
  also 
  in 
  certain 
  other 
  characters, 
  some 
  of 
  which 
  are 
  diflScult 
  

   to 
  measure 
  for 
  statistical 
  inspection. 
  Of 
  these 
  it 
  is 
  worthy 
  to 
  mention 
  

   the 
  deeper, 
  more 
  robust 
  body, 
  shorter 
  fins, 
  especially 
  the 
  pectorals 
  

   and 
  pelvics 
  (see 
  table 
  13), 
  slightly 
  longer 
  head, 
  and 
  higher 
  modal 
  

   count 
  of 
  the 
  pectoral 
  fin 
  rays 
  (table 
  1). 
  

  

  Table 
  13. 
  — 
  Coloration 
  in 
  life 
  of 
  Upeneus 
  oligospilus 
  and 
  of 
  U. 
  tragula 
  

  

  Item 
  

  

  17. 
  oligospilus^ 
  

  

  U. 
  tragula^ 
  

  

  Head 
  and 
  body. 
  

  

  Horizontal 
  stripe. 
  

   Spots 
  on 
  head 
  and 
  body. 
  

  

  Spiny 
  dorsal 
  fins. 
  

  

  Caudal 
  fin. 
  

  

  (Persian 
  Gulf) 
  

  

  Head 
  brownish 
  dorsally; 
  

   side 
  of 
  body 
  below 
  lat- 
  

   eral 
  stripe 
  with 
  bluish 
  

   green 
  cast; 
  abdomen 
  

   silvery 
  with 
  red 
  tinge. 
  

  

  Orange. 
  

  

  Scattered, 
  irregular, 
  

   vivid, 
  vermilion 
  spots, 
  

   quickly 
  fading 
  in 
  al- 
  

   cohol. 
  

  

  Vermilion 
  bars. 
  

  

  Vermilion 
  bars; 
  nar- 
  

   rower. 
  

  

  (Philippines) 
  

   Grayish 
  yellow; 
  body 
  ven- 
  

   trally 
  white 
  flushed 
  with 
  

   roseate. 
  

  

  Dusky 
  to 
  brown. 
  

  

  Conspicuous 
  uniform 
  

   brown 
  spots; 
  sparingly 
  

   to 
  thickly 
  spotted 
  and 
  

   persist 
  in 
  preservation. 
  

  

  Upper 
  third 
  black 
  with 
  

   circular, 
  yellow 
  spots, 
  

   and 
  lower 
  portion 
  with 
  

   two 
  dusky 
  bars. 
  

  

  Dusky 
  bars; 
  wider. 
  

  

  > 
  Blegvad 
  and 
  L0ppeiitlim 
  (1944) 
  

   » 
  Herre 
  and 
  Montalban 
  (1928) 
  

  

  