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  XV. 
  On 
  a 
  neiv 
  species 
  of 
  Prothoe. 
  By 
  Philip 
  Crowley, 
  

   F.L.S., 
  F.Z.S., 
  &c. 
  

  

  [Read 
  July 
  1st, 
  1891.] 
  

  

  Plate 
  XVIII. 
  

  

  A 
  FEW 
  months 
  since 
  I 
  received 
  from 
  Tonghou, 
  Burmah, 
  

   a 
  specimen 
  of 
  Prothoe, 
  which 
  I 
  placed 
  among 
  my 
  Prothoe 
  

   Caledonia; 
  but 
  upon 
  further 
  examination 
  with 
  the 
  type, 
  

   and 
  also 
  eight 
  or 
  ten 
  other 
  specimens 
  from 
  Perak, 
  found 
  

   that 
  it 
  differed 
  to 
  such 
  an 
  extent 
  that 
  I 
  have 
  ventured 
  to 
  

   describe 
  it 
  as 
  a 
  new 
  species 
  under 
  the 
  name 
  of 
  Prothoe 
  

   helisama. 
  The 
  specimen 
  in 
  question 
  came 
  from 
  the 
  

   neighbourhood 
  of 
  Tonghou, 
  which 
  is 
  some 
  1200 
  to 
  1500 
  

   miles 
  north 
  of 
  Perak, 
  or 
  Borneo, 
  from 
  whence, 
  I 
  believe, 
  

   the 
  type 
  came. 
  I 
  append 
  a 
  description, 
  and 
  give 
  a 
  plate 
  

   of 
  helisama, 
  which 
  is 
  in 
  my 
  own 
  collection. 
  

  

  Prothoe 
  helisama, 
  Crowley. 
  

  

  Nearest 
  to 
  P. 
  Caledonia, 
  Hewitson, 
  but 
  is 
  easily 
  distinguished 
  by 
  

   the 
  large 
  extent 
  of 
  yellow 
  on 
  the 
  fore 
  wing, 
  and 
  the 
  dark 
  border 
  

   on 
  the 
  hind 
  wing 
  being 
  very 
  much 
  narrower. 
  Upper 
  side 
  : 
  — 
  Fore 
  

   tving 
  : 
  The 
  yellow 
  patch 
  is 
  rather 
  paler 
  in 
  colour, 
  and 
  extends 
  up 
  

   to 
  the 
  third 
  median 
  nervule, 
  the 
  edges 
  of 
  which 
  are 
  more 
  dentated 
  

   than 
  in 
  P. 
  Caledonia. 
  At 
  the 
  posterior 
  angle 
  the 
  yellow 
  almost 
  

   unites 
  with 
  the 
  hind 
  marginal 
  border. 
  The 
  dark 
  colour 
  on 
  the 
  

   costa, 
  apical 
  portion, 
  and 
  hind 
  margin, 
  though 
  somewhat 
  lighter 
  

   in 
  colour, 
  is 
  relieved 
  by 
  five 
  very 
  distinct 
  yellow 
  spots, 
  there 
  being 
  

   an 
  additional 
  one 
  below 
  these, 
  on 
  the 
  costa, 
  but 
  near 
  the 
  base. 
  

   Hind 
  loing 
  : 
  The 
  border 
  on 
  the 
  hind 
  margin 
  is 
  very 
  much 
  

   narrower, 
  which 
  entirely 
  disappears 
  below 
  the 
  second 
  median 
  

   nervule, 
  towards 
  the 
  anal 
  angle. 
  The 
  basal 
  area 
  is 
  pale 
  mauve, 
  

   the 
  grey 
  being 
  rather 
  pinker 
  than 
  in 
  the 
  allied 
  species. 
  Under 
  

   side 
  : 
  — 
  Fore 
  wing 
  : 
  Both 
  wings 
  rather 
  paler, 
  both 
  in 
  ground 
  colour 
  

   and 
  markings, 
  especially 
  the 
  red 
  beyond 
  the 
  discoidal 
  cell. 
  The 
  

   black 
  bars 
  between 
  the 
  third 
  median 
  nervule 
  and 
  the 
  second 
  dis- 
  

   coidal 
  or 
  radial 
  nervule 
  is 
  wider 
  apart, 
  which 
  reduces 
  the 
  red 
  on 
  

  

  TRANS. 
  ENT. 
  SOC. 
  LOND. 
  1891. 
  — 
  PART 
  III. 
  (oCT.) 
  2e 
  

  

  