﻿Species 
  of 
  African 
  Butterflies, 
  127 
  

  

  Underside 
  as 
  above 
  ; 
  but 
  on 
  the 
  posterior 
  wings 
  the 
  space 
  

   between 
  the 
  base 
  and 
  the 
  curved 
  band 
  is 
  irrorated 
  with 
  

   whitish 
  brown. 
  

  

  Expanse 
  of 
  wings 
  2 
  \ 
  inches. 
  

  

  I 
  am 
  not 
  aware 
  of 
  any 
  African 
  Acrcea 
  which 
  resembles 
  this 
  

   species 
  ; 
  but 
  it 
  has 
  a 
  general 
  resemblance 
  to 
  A. 
  alalia, 
  Feld., 
  

   from 
  South 
  America. 
  

  

  Acrcea 
  mombasce. 
  

  

  This 
  butterfly 
  strongly 
  resembles 
  A. 
  rabbaice, 
  Ward; 
  but 
  

   a 
  uniform 
  series 
  of 
  them 
  discloses 
  a 
  sufficient 
  difference 
  to 
  

   warrant 
  it 
  being 
  considered 
  a 
  distinct 
  species. 
  

  

  Both 
  wings 
  are 
  transparent 
  pale 
  brown, 
  the 
  nervures, 
  a 
  

   broad 
  space 
  at 
  the 
  apex 
  and 
  round 
  the 
  outer 
  margin 
  of 
  ante- 
  

   rior 
  wings, 
  and 
  the 
  posterior 
  wings 
  darker 
  brown 
  ; 
  the 
  irre- 
  

   gular 
  band 
  of 
  spots 
  across 
  the 
  middle 
  and 
  the 
  spot 
  below 
  the 
  

   cell 
  of 
  anterior, 
  and 
  the 
  submarginal 
  band 
  of 
  posterior, 
  wings 
  

   brownish 
  grey 
  and 
  much 
  less 
  distinct 
  than 
  in 
  rabbaice 
  ; 
  the 
  

   marginal 
  band 
  on 
  posterior 
  wings 
  broader 
  and 
  growing 
  nearly 
  

   obsolete 
  towards 
  the 
  anal 
  angle 
  ; 
  the 
  markings 
  and 
  nervures 
  

   in 
  rabbaice 
  are 
  much 
  darker, 
  almost 
  black, 
  and 
  more 
  distinct 
  ; 
  

   the 
  spot 
  below 
  the 
  cell 
  on 
  anterior 
  wings 
  is 
  larger, 
  the 
  sub- 
  

   marginal 
  band 
  on 
  posterior 
  wings 
  is 
  brighter 
  and 
  more 
  com- 
  

   pletely 
  defined 
  towards 
  the 
  anal 
  angle. 
  

  

  Mombasa 
  may 
  be 
  a 
  seasonal 
  or 
  local 
  form 
  of 
  rabbaice. 
  

  

  Expanse 
  of 
  wings, 
  <$ 
  2\, 
  $ 
  2| 
  inches. 
  

  

  Acrcea 
  matuapa. 
  

  

  Male. 
  — 
  Upperside. 
  Anterior 
  wings 
  semitransparent, 
  the 
  

   basal 
  half 
  clouded 
  with 
  pale 
  buff; 
  apex 
  dusky 
  brown, 
  a 
  num- 
  

   ber 
  of 
  spots 
  across 
  the 
  wing 
  which 
  are 
  variable, 
  as 
  in 
  neobale 
  

   and 
  hirta. 
  Posterior 
  wings 
  pale 
  brown, 
  with 
  a 
  broad 
  brown- 
  

   black 
  margin, 
  in 
  the 
  middle 
  of 
  which 
  is 
  a 
  row 
  of 
  small 
  

   pale 
  brown 
  spots 
  between 
  the 
  nervures, 
  almost 
  obsolete 
  ; 
  the 
  

   spots 
  on 
  the 
  disk 
  and 
  at 
  the 
  base 
  vary 
  in 
  number 
  and 
  size. 
  

  

  Underside 
  as 
  above, 
  the 
  spots 
  on 
  the 
  broad 
  marginal 
  border 
  

   of 
  posterior 
  wings 
  more 
  distinct, 
  but 
  minute 
  and 
  almost 
  white. 
  

  

  The 
  female 
  resembles 
  the 
  male, 
  but 
  is 
  paler 
  and 
  larger. 
  

  

  Expanse 
  of 
  wings, 
  J 
  2§-, 
  ? 
  2f 
  inches. 
  

  

  Differs 
  from 
  neobule 
  chiefly 
  in 
  the 
  much 
  greater 
  breadth 
  of 
  

   the 
  band 
  on 
  the 
  posterior 
  wings 
  and 
  the 
  smallness 
  of 
  the 
  spots 
  

   in 
  that 
  band. 
  

  

  