﻿Species 
  of 
  the 
  Genus 
  Tiichostibas. 
  2ll 
  

  

  wings 
  are 
  as 
  in 
  TV. 
  sanctipaulensis, 
  but 
  the 
  secondaries 
  are 
  

   in 
  the 
  basal 
  two-thirds 
  strongly 
  transparent 
  and 
  accordingly 
  

   greyish 
  white 
  appearing, 
  with 
  hardly 
  darker 
  veins. 
  The 
  

   hair 
  pencil 
  of 
  the 
  base 
  of 
  the 
  cosfa 
  of 
  the 
  secondaries 
  long 
  

   and 
  snow-white. 
  The 
  underside 
  of 
  the 
  secondaries 
  only 
  in 
  

   the 
  basal 
  and 
  dorsal 
  area 
  a 
  little 
  lighter 
  than 
  the 
  primaries. 
  

   Abdomen 
  anteriorly 
  more 
  greyish 
  than 
  the 
  thorax, 
  posteriorly 
  

   as 
  this 
  or 
  with 
  a 
  stronger 
  greenish 
  sheen. 
  Anal 
  tuft 
  distinct. 
  

   Hind 
  tibia 
  thickly 
  covered 
  with 
  long 
  hairs. 
  Alar 
  expanse 
  

   29 
  mm. 
  j 
  length 
  of 
  the 
  primaries 
  13, 
  of 
  the 
  body 
  12*5 
  mm. 
  

  

  That 
  this 
  form 
  is 
  not 
  the 
  other 
  sex 
  of 
  the 
  previous 
  species 
  

   (TV. 
  sanctipaulen&is 
  m.) 
  is 
  evident 
  from, 
  among 
  others, 
  the 
  

   fact, 
  that 
  the 
  cocoons 
  are 
  different 
  {vide 
  supra). 
  

  

  4. 
  Tiichostibas 
  distincta 
  Strand 
  sp. 
  n. 
  

  

  1 
  S 
  from 
  Chiriqui, 
  Vulkan, 
  1892 
  (Trdtsch 
  leg.). 
  

  

  Belongs 
  to 
  the 
  spotted 
  group 
  of 
  the 
  species 
  and 
  is 
  easily 
  

   distinguished. 
  Primaries 
  olivaceous 
  brown, 
  with 
  light, 
  

   unusually 
  distinct 
  spots, 
  which 
  are 
  so 
  large 
  as 
  to 
  fill 
  up 
  at 
  

   least 
  half 
  of 
  the 
  wing, 
  light 
  greyish 
  white, 
  sharply 
  marked, 
  

   and 
  form 
  the 
  following 
  figures 
  : 
  in 
  the 
  basal 
  half 
  a 
  trans- 
  

   verse 
  band 
  consisting 
  of 
  four 
  longish 
  spots, 
  only 
  indistinctly 
  

   separated 
  by 
  the 
  veins, 
  of 
  which 
  the 
  posterior 
  touches 
  the 
  

   dorsal 
  edge 
  and 
  is 
  about 
  three 
  times 
  as 
  long 
  as 
  broad, 
  the 
  

   following 
  is 
  hardly 
  half 
  as 
  long 
  as 
  the 
  posterior, 
  Ihe 
  next 
  

   following 
  is 
  about 
  two-thirds 
  as 
  long 
  as 
  the 
  posterior, 
  while 
  

   the 
  anterior 
  is 
  the 
  smallest 
  of 
  the 
  four 
  and 
  does 
  not 
  touch 
  the 
  

   costal 
  edge. 
  The 
  area 
  of 
  the 
  outer 
  margin, 
  as 
  well 
  as 
  the 
  

   cilia, 
  covered 
  with 
  a 
  band 
  of 
  the 
  same 
  light 
  colour, 
  which 
  is 
  

   2-3 
  mm. 
  broad 
  and 
  posteiiorly 
  and 
  submedially 
  indistinctly 
  

   unites 
  with 
  a 
  large, 
  roundish, 
  but 
  rather 
  irregular 
  spot, 
  which 
  

   fills 
  up 
  almost 
  the 
  whole 
  median 
  area 
  from 
  the 
  costal 
  edge 
  to 
  

   the 
  fold, 
  and 
  looks 
  like 
  an 
  irregular 
  annuliform 
  figure, 
  in- 
  

   cluding 
  a 
  triangular 
  spot, 
  or 
  as 
  if 
  formed 
  by 
  six 
  to 
  seven 
  spots, 
  

   partly 
  joining. 
  Underside 
  of 
  the 
  primaries 
  greyish 
  brown, 
  

   along 
  the 
  outer 
  margin 
  somewhat 
  lighter, 
  in 
  the 
  dorsal 
  area 
  

   with 
  a 
  yellowish-whitish 
  spot, 
  and 
  before 
  this 
  with 
  some 
  

   violet 
  sheen. 
  Secondaries 
  transparent, 
  with 
  blackish-brown 
  

   cilia 
  and 
  veins, 
  the 
  costal 
  area 
  and 
  a 
  line 
  on 
  the 
  outer 
  margin 
  

   opaque, 
  blackish 
  brown 
  ; 
  of 
  the 
  hair 
  pencil 
  of 
  the 
  costal 
  edge 
  

   only 
  a 
  few 
  greyish-white 
  hairs 
  are 
  to 
  be 
  seen. 
  The 
  body 
  is 
  

   much 
  worn, 
  but 
  appears, 
  as 
  well 
  as 
  the 
  appendages, 
  to 
  be 
  

   dark 
  brown 
  or 
  blackish 
  ; 
  thorax 
  above 
  partly 
  or 
  wholly 
  

   greyish 
  white. 
  

  

  Alar 
  expanse 
  27 
  mm. 
  ; 
  length 
  of 
  the 
  wing 
  12*5, 
  of 
  the 
  

   body 
  10 
  nun. 
  

  

  Ann. 
  d; 
  Mag. 
  N. 
  Hist. 
  Ser. 
  8. 
  Vol. 
  vii. 
  16 
  

  

  