﻿222 
  Thirtieth 
  Report 
  on 
  the 
  State 
  Museum. 
  [HO] 
  

  

  XXII. 
  ON 
  THE 
  IDENTITY 
  OF 
  TWO 
  FORMS 
  OF 
  HYPEHIDjE. 
  

  

  In 
  the 
  Transactions 
  of 
  the 
  American 
  Entomological 
  Society 
  

   Yol. 
  IY, 
  pp. 
  105, 
  106, 
  Sept. 
  1872, 
  Mr. 
  Grote 
  describes 
  Tortri- 
  

   cocles 
  bifidalis 
  and 
  T. 
  indivisalis, 
  provisionally 
  as 
  two 
  spe- 
  

   cies. 
  He 
  indicates 
  the 
  principal 
  difference 
  between 
  the 
  two, 
  

   to 
  lie 
  in 
  a 
  cleft 
  in 
  the 
  outer 
  margin 
  of 
  the 
  primaries 
  of 
  bifidalis. 
  

   Although 
  designating 
  them 
  by 
  different 
  specific 
  names, 
  he 
  

   remarks, 
  " 
  I 
  am 
  inclined 
  to 
  consider 
  the 
  two 
  forms 
  merely 
  as 
  

   sexes 
  of 
  one 
  species, 
  with 
  the 
  fore-wings 
  cleft 
  in 
  the 
  male. 
  

   And 
  with 
  four 
  specimens 
  of 
  T. 
  bifidalis 
  before 
  me, 
  and 
  eight 
  

   of 
  T. 
  indivisalis, 
  I 
  cannot 
  but 
  be 
  sure 
  that 
  most, 
  if 
  not 
  all, 
  of 
  

   my 
  T. 
  bifidalis 
  are 
  males, 
  and 
  of 
  my 
  7. 
  indivisalis, 
  females. 
  

   * 
  * 
  * 
  I 
  shall 
  then 
  not 
  be 
  disappointed 
  if 
  the 
  two 
  should 
  

   prove 
  to 
  be 
  sexual 
  forms 
  of 
  one 
  species." 
  

  

  Subsequently, 
  same 
  vol., 
  page 
  308, 
  Jan. 
  1873, 
  Mr. 
  G-rote 
  

   writes 
  : 
  " 
  Mr. 
  J. 
  A. 
  Lintner 
  informs 
  me 
  that 
  he 
  has 
  both 
  sexes 
  

   of 
  Tortricodes 
  bifidalis 
  with 
  cleft 
  primaries. 
  I 
  then 
  refer 
  T. 
  

   indivisalis 
  to 
  Heterogramma 
  Guenee, 
  believing 
  our 
  species 
  

   not 
  to 
  differ 
  generically 
  from 
  the 
  Brazilian 
  species 
  which 
  M. 
  

   Guenee 
  nses 
  for 
  his 
  type." 
  

  

  In 
  accordance 
  with 
  the 
  above 
  reference, 
  the 
  two 
  forms 
  have 
  

   been 
  known 
  np 
  to 
  the 
  present 
  as 
  Tortricodes 
  bifidalis 
  and 
  

   Heterogramma 
  indivisalis. 
  

  

  In 
  a 
  recent 
  study 
  of 
  a 
  considerable 
  number 
  of 
  examples 
  of 
  

   each 
  of 
  the 
  above 
  two 
  forms, 
  collected 
  at 
  sugar, 
  during 
  the 
  

   months 
  of 
  June, 
  July 
  and 
  August 
  of 
  1875, 
  I 
  was 
  surprised 
  to 
  

   find 
  that 
  among 
  so 
  many, 
  all 
  having 
  the 
  cleft 
  wing 
  were 
  males, 
  

   and 
  all 
  with 
  the 
  entire 
  wing, 
  females. 
  Suspecting, 
  from 
  this 
  

   discovery, 
  that 
  the 
  two 
  were 
  but 
  one 
  and 
  the 
  same 
  species, 
  I 
  

   examined 
  my 
  cabinet 
  ex-ample 
  of 
  T. 
  bifidalis 
  "female," 
  and 
  

   found 
  that 
  I 
  had 
  been 
  misled 
  by 
  an 
  unnatural 
  position 
  which 
  

   the 
  frenulum 
  had 
  assumed, 
  but 
  that 
  it 
  was 
  unquestionably 
  

   simple, 
  not 
  yielding 
  even 
  to 
  pressure 
  after 
  having 
  been 
  de- 
  

   tached 
  from 
  the 
  wing, 
  and, 
  therefore, 
  indicating 
  a 
  male. 
  

   There 
  was. 
  then, 
  no 
  doubt 
  t)f 
  the 
  specific 
  identity 
  of 
  the 
  two 
  

   differing 
  forms. 
  

  

  