﻿Ueterocera 
  from 
  Costa 
  Rica. 
  281 
  

  

  Chadisra 
  prailanta, 
  sp. 
  n. 
  

  

  ? 
  . 
  Palpi 
  in 
  front 
  white 
  irrorated 
  with 
  brown, 
  dark 
  brown 
  

   behind. 
  Head, 
  collar, 
  and 
  thorax 
  brown 
  ; 
  patagia 
  grey. 
  

   Abdomen 
  brown 
  above, 
  the 
  basal 
  segment 
  whitish 
  grey. 
  

   Fore 
  wings 
  : 
  basal 
  third 
  of 
  costal 
  margin 
  and 
  cell 
  whitish 
  

   irrorated 
  with 
  brown 
  ; 
  below 
  cell 
  more 
  narrowly 
  similar, 
  

   limited 
  by 
  an 
  inwardly 
  oblique 
  fuscous 
  shade 
  from 
  cell, 
  and 
  

   with 
  a 
  brown 
  streak 
  below 
  median 
  ; 
  a 
  wavy 
  black 
  medial 
  

   line 
  divided 
  in 
  cell 
  by 
  a 
  light 
  brown 
  shade 
  and 
  followed 
  by 
  

   a 
  dark 
  grey 
  shade 
  at 
  end 
  of 
  cell 
  ; 
  the 
  medial 
  space 
  brown 
  ; 
  a 
  

   postmedial 
  lunular 
  black 
  line 
  inset 
  on 
  vein 
  3, 
  irregularly 
  

   edged 
  with 
  white 
  and 
  followed 
  by 
  a 
  brown 
  space, 
  leaving 
  

   the 
  terminal 
  area 
  above 
  vein 
  3 
  white 
  thinly 
  irrorated 
  with 
  

   brown 
  ; 
  subterminal 
  black 
  spots 
  between 
  veins 
  6 
  and 
  8, 
  and 
  

   smaller 
  spots 
  between 
  2 
  and 
  4 
  ; 
  a 
  marginal 
  irregular 
  brown 
  

   line, 
  beyond 
  which 
  the 
  irrorations 
  are 
  thicker. 
  Hind 
  wings 
  : 
  

   basal 
  half 
  whitish 
  irrorated 
  with 
  brown 
  ; 
  outer 
  half 
  fuscous, 
  

   narrowing 
  at 
  anal 
  angle; 
  cilia 
  white. 
  

  

  Expanse 
  35 
  mm. 
  

  

  flab. 
  Tuis. 
  

  

  Rifargia 
  dissepta, 
  sp, 
  n. 
  

  

  <$ 
  . 
  Head 
  brownish 
  mottled 
  with 
  grey. 
  Tegulse 
  brown, 
  

   tipped 
  with 
  grey 
  behind, 
  and 
  with 
  two 
  lines 
  of 
  grey 
  scales 
  in 
  

   front. 
  Thorax 
  and 
  abdomen 
  grey 
  irrorated 
  with 
  brown 
  

   except 
  on 
  four 
  basal 
  segments 
  of 
  abdomen. 
  Fore 
  wings 
  and 
  

   cilia 
  whitish 
  thickly 
  irrorated 
  with 
  light 
  brown 
  ; 
  a 
  brownish 
  

   basal 
  shade 
  on 
  costa, 
  preceded 
  by 
  an 
  oblique 
  white 
  spot 
  and 
  

   some 
  darker 
  brown 
  scales 
  in 
  and 
  below 
  cell 
  ; 
  two 
  fine 
  black 
  

   lines 
  on 
  either 
  side 
  of 
  discocellular, 
  the 
  inner 
  one 
  angled 
  

   anteriorly, 
  the 
  branch 
  extending 
  towards 
  base, 
  the 
  outer 
  one 
  

   angled 
  at 
  middle 
  of 
  discocellular, 
  the 
  branches 
  extending 
  

   outwardly 
  ; 
  a 
  fine 
  brownish 
  medial 
  shade 
  and 
  fine 
  postmedial 
  

   lunular 
  line 
  around 
  end 
  of 
  cell 
  ; 
  a 
  subterminal 
  whitish 
  den- 
  

   tate 
  shade 
  with 
  fuscous 
  streaks 
  between 
  veins 
  4-8 
  and 
  a 
  

   small 
  fuscous 
  spot 
  above 
  and 
  below 
  vein 
  2; 
  a 
  marginal 
  dark 
  

   line 
  straight 
  from 
  costa 
  to 
  vein 
  4, 
  then 
  lunular. 
  Hind 
  wings 
  

   white 
  at 
  base, 
  the 
  veins 
  and 
  some 
  hairs 
  brownish 
  ; 
  the 
  outer 
  

   margin 
  broadly 
  black 
  ; 
  cilia 
  white. 
  

  

  Expanse 
  45 
  mm. 
  

  

  ? 
  . 
  Fore 
  wings 
  : 
  no 
  basal 
  dark 
  markings 
  ; 
  traces 
  of 
  an 
  

   antemedial 
  lunular 
  line 
  ; 
  no 
  black 
  lines 
  at 
  discocellular, 
  the 
  

   medial 
  area 
  from 
  cell 
  to 
  inner 
  margin 
  tinged 
  with 
  fuscous 
  

   brown, 
  and 
  a 
  similar 
  shade 
  at 
  end 
  of 
  cell. 
  

  

  Expanse 
  47 
  mm. 
  

  

  Hab. 
  Avangarez. 
  

  

  1'ossibly 
  only 
  an 
  extreme 
  form 
  of 
  R. 
  distingucnda, 
  Wlk, 
  

  

  