﻿Heterocera 
  from 
  Costa 
  Rica. 
  G31 
  

  

  Givira 
  tigrala, 
  sp. 
  n. 
  

  

  Palpi 
  reddish 
  brown 
  ; 
  frons 
  buff-brown 
  ; 
  vertex 
  and 
  collar 
  

   in 
  front 
  reddish 
  brown; 
  collar 
  behind 
  and 
  thorax 
  whitish 
  

   buff, 
  with 
  transverse 
  reddish-brown 
  shades 
  ; 
  abdomen 
  light 
  

   reddish 
  brown, 
  with 
  transverse 
  whitish-buff 
  lines. 
  Fore 
  

   wings 
  ochreous, 
  crossed 
  by 
  reddish-brown 
  spots 
  and 
  short 
  

   thick 
  lines 
  partly 
  edged 
  with 
  pale 
  golden 
  scales 
  ; 
  some 
  small 
  

   basal 
  spots 
  followed 
  by 
  larger 
  coalescing 
  spots, 
  darker 
  below 
  

   cell 
  ; 
  three 
  antemedial 
  small 
  spots, 
  on 
  cosfa, 
  in 
  cell, 
  and 
  

   below 
  cell, 
  and 
  geminate 
  spots 
  above 
  and 
  below 
  lb 
  ; 
  a 
  large 
  

   medial 
  darker 
  spot 
  across 
  costa 
  and 
  end 
  of 
  cell, 
  and 
  a 
  similar 
  

   .spot 
  from 
  below 
  end 
  of 
  cell 
  to 
  inner 
  margin, 
  the 
  two 
  some- 
  

   times 
  coalescing 
  and 
  forming 
  a 
  broad 
  band 
  ; 
  a 
  broad 
  post- 
  

   medial 
  line 
  from 
  7-2, 
  followed 
  by 
  short 
  lines, 
  and 
  a 
  broken 
  

   subterminal 
  ; 
  broad 
  terminal 
  streaks 
  on 
  outer 
  margin 
  down 
  

   bent 
  and 
  outwardly 
  oblique. 
  Hind 
  wings 
  ochreous, 
  with 
  

   indistinct 
  darker 
  transverse 
  strise. 
  

  

  Expanse 
  30 
  mm. 
  

  

  Hob. 
  Juan 
  Vinas, 
  Tuis. 
  

  

  Lentagena 
  tristani, 
  sp. 
  n. 
  

  

  Head 
  and 
  thorax 
  grey, 
  streaked 
  with 
  brownish 
  hairs 
  ; 
  a 
  

   darker 
  brown-grey 
  shade 
  posteriorly 
  on 
  thorax 
  ; 
  abdomen 
  

   grey, 
  banded 
  with 
  fuscous. 
  Fore 
  wings 
  whitish, 
  shaded 
  with 
  

   grey 
  postmedially, 
  and 
  reticulated 
  with 
  fine 
  darker 
  grey 
  

   lines 
  ; 
  the 
  costal 
  margin, 
  base 
  of 
  cell, 
  inner 
  margin, 
  and 
  apex 
  

   shaded 
  with 
  brown; 
  a 
  fine 
  brown 
  streak 
  on 
  discocellular 
  ; 
  a 
  

   broad 
  dark 
  brown 
  streak 
  medially 
  above 
  submedian 
  ; 
  reti- 
  

   culations 
  on 
  outer 
  margin 
  more 
  heavily 
  marked, 
  dark 
  brown 
  ; 
  

   dark 
  brown 
  shades 
  on 
  cilia 
  at 
  end 
  of 
  veins. 
  Hind 
  wings 
  

   semihyaline 
  whitish 
  grey 
  ; 
  the 
  margins, 
  veins, 
  and 
  some 
  strise 
  

   brown. 
  

  

  Expanse 
  39 
  mm. 
  

  

  Bab. 
  Juan 
  Vinas, 
  Tuis, 
  Sixola. 
  

  

  Named 
  after 
  Prof. 
  Tristan, 
  of 
  San 
  Jose, 
  who 
  has 
  assisted 
  

   greatly 
  in 
  a 
  knowledge 
  of 
  the 
  fauna 
  of 
  Costa 
  Rica. 
  

  

  Trigena 
  crassa, 
  sp. 
  n. 
  

  

  $ 
  . 
  Body 
  mottled 
  dark 
  steel-grey 
  and 
  brown, 
  the 
  abdomen 
  

   somewhat 
  irrorated 
  with 
  white. 
  Fore 
  wings 
  dark 
  steel-grey, 
  

   irrorated 
  with 
  light 
  brown 
  ; 
  a 
  fine 
  subbasal 
  black 
  line 
  ; 
  a 
  

   heavier 
  marked 
  antemedial 
  line, 
  bifurcating 
  in 
  cell, 
  the 
  inner 
  

   line 
  inbent 
  towards 
  inner 
  margin 
  ; 
  a 
  fine 
  postmedial 
  line 
  and 
  

   a 
  more 
  distinctly 
  marked 
  subterminal 
  line, 
  thickening 
  in 
  

   places 
  and 
  emitting 
  curved 
  lines 
  to 
  termen 
  ; 
  some 
  whitish 
  

  

  