﻿10 
  Mr. 
  E. 
  G. 
  Joseph 
  on 
  the 
  Rhopalocera 
  

  

  thalia, 
  Linn., 
  is 
  the 
  only 
  representative 
  of 
  this 
  subfamily 
  that 
  

   finds 
  a 
  place 
  in 
  Burch< 
  IPs 
  collection. 
  The 
  individuals 
  of 
  that 
  

   species, 
  however, 
  exhibit 
  a 
  very 
  large 
  amount 
  of 
  variation 
  

   both 
  as 
  regards 
  size 
  and 
  pattern. 
  

  

  We 
  believe 
  that 
  none 
  of 
  the 
  above-mentioned 
  variations 
  

   are 
  of 
  specific 
  value, 
  although 
  a 
  fair 
  proportion 
  of 
  the 
  

   specimens 
  answers 
  very 
  well 
  to 
  Godman 
  and 
  Salvin's 
  descrip- 
  

   tion 
  o£ 
  A. 
  anteas, 
  Doubl. 
  & 
  Hew. 
  1 
  , 
  and 
  a 
  few 
  others 
  possess 
  

   the 
  rectangularly 
  bent 
  median 
  black 
  bar 
  of 
  the 
  hind 
  wing 
  

   that 
  forms 
  so 
  conspicuous 
  a 
  feature 
  of 
  A. 
  pellenea, 
  Hiibn. 
  

   But 
  seeing 
  that 
  a 
  careful 
  examination 
  of 
  Burchell's 
  material 
  

   shows 
  every 
  intermediate 
  grade 
  between 
  the 
  patterns 
  of 
  

   A. 
  thalia 
  and 
  A. 
  anteas 
  on 
  the 
  one 
  hand, 
  and 
  of 
  A. 
  thalia 
  

   and 
  A. 
  pellenea-\\ke 
  specimens 
  on 
  the 
  other, 
  — 
  considering, 
  

   furthermore, 
  that 
  the 
  whole 
  series 
  was 
  captured 
  in 
  S.E. 
  Brazil, 
  — 
  

   we 
  conclude 
  that, 
  as 
  far 
  as 
  this 
  collection, 
  at 
  any 
  rate, 
  is 
  con- 
  

   cerned, 
  the 
  above-mentioned 
  differences 
  are 
  only 
  of 
  varietal 
  

   value. 
  It 
  is 
  important, 
  however, 
  to 
  confirm 
  this 
  opinion 
  by 
  

   examination 
  of 
  structural 
  characters 
  in 
  fresher 
  and 
  more 
  

   perfect 
  specimens 
  than 
  those 
  of 
  the 
  Burchell 
  collection, 
  by 
  

   the 
  records 
  of 
  individuals 
  observed 
  in 
  coitu, 
  and, 
  above 
  all, 
  

   by 
  the 
  paramount 
  test 
  of 
  breeding. 
  

  

  I 
  have, 
  moreover, 
  studied 
  the 
  descriptions 
  and 
  drawings 
  of 
  

   these 
  three 
  species 
  by 
  recent 
  and 
  older 
  writers, 
  and, 
  after 
  

   caretully 
  comparing 
  them 
  with 
  Burchell's 
  specimens, 
  have 
  

   been 
  unable 
  to 
  find 
  any 
  permanent 
  characters 
  by 
  which 
  

   A. 
  thalia, 
  A. 
  anteas, 
  and 
  A. 
  pellenea 
  may 
  be 
  separated 
  — 
  a 
  

   conclusion 
  already 
  arrived 
  at, 
  as 
  regards 
  the 
  two 
  first-named 
  

   forms, 
  by 
  Godman 
  and 
  Salvin, 
  Staudinger, 
  and 
  other 
  autho- 
  

   rities. 
  Attention 
  will 
  be 
  directed 
  to 
  any 
  marked 
  variations 
  

   that 
  appear 
  in 
  the 
  series, 
  under 
  the 
  respective 
  numbers. 
  It 
  

   gives 
  me 
  much 
  pleasure 
  to 
  acknowledge 
  the 
  kind 
  help 
  

   rendered 
  by 
  Mr. 
  Harry 
  Eltringham, 
  M.A., 
  of 
  New 
  College, 
  

   Oxford, 
  in 
  the 
  endeavour 
  to 
  ascertain 
  the 
  correct 
  sex 
  of 
  the 
  

   Burchell 
  specimens 
  — 
  many 
  of 
  them 
  in 
  a 
  very 
  dilapidated 
  

   condition. 
  

  

  The 
  whole 
  of 
  the 
  geographical 
  data 
  and 
  other 
  notes 
  bearing 
  

   on 
  the 
  scene 
  of 
  Burchell's 
  botanical 
  and 
  entomological 
  opera- 
  

   tions 
  in 
  Brazil 
  has 
  now 
  been 
  transcribed 
  by 
  Professor 
  Poulton 
  

   from 
  the 
  Catalogue 
  of 
  Brazilian 
  Plants, 
  containing 
  the 
  

   numbers 
  701-10108, 
  and 
  has 
  been 
  utilized 
  for 
  the 
  purpose 
  of 
  

   this 
  paper. 
  It 
  is 
  a 
  record 
  of 
  nearly 
  five 
  years' 
  continuous 
  

  

  1 
  ' 
  Biologia 
  Centrali-Ameiicana/ 
  Insecta, 
  Lepidoptera 
  Kbopalocera, 
  

   vol. 
  i. 
  p. 
  141 
  (1879-1901). 
  

  

  