﻿HYBEIDISATION 
  IN 
  LEPIDOPTERA. 
  39 
  

  

  Amphidasys, 
  Tr. 
  

  

  hybr. 
  herefordi, 
  Tutt 
  (strataria 
  s 
  x 
  betularia 
  ? 
  ). 
  

   Biston, 
  Leach 
  

  

  hybr. 
  pilzii, 
  Stdfss. 
  (hirtaria 
  cf 
  x 
  pomonarius 
  ?). 
  

  

  hybr. 
  hunii, 
  Obth. 
  (pomonarius 
  s 
  x 
  hirtaria 
  ? 
  ). 
  

   Selenia, 
  Hb. 
  

  

  hybr. 
  parvilunaria, 
  Bartel 
  (bilunaria 
  3 
  x 
  tetralunaria 
  ? 
  ). 
  

   Ennomos, 
  Tr. 
  

  

  hybr. 
  dartfordi, 
  Tutt 
  (alniaria 
  cf 
  X 
  angularia 
  2 
  ). 
  

   Tephrosia, 
  Bdv. 
  

  

  hybr. 
  ridingi, 
  Tutt 
  (bistortata 
  cf 
  x 
  crepnscularia 
  ? 
  ). 
  

  

  hybr. 
  bacoti, 
  Tutt 
  (crepuscularia 
  cf 
  X 
  bistortata 
  ? 
  ). 
  

  

  hybr. 
  ridingi-suft'usa, 
  Tutt 
  (bistortata 
  cf 
  x 
  delamerensis 
  ? 
  ). 
  

  

  hybr. 
  bacoti-suffusa, 
  Tutt 
  (delamerensis 
  cf 
  x 
  bistortata 
  ? 
  ). 
  

  

  hybr. 
  mixta, 
  Tutt 
  (bacoti-suffusa 
  cf 
  x 
  ridingi-suffusa 
  ? 
  ). 
  

  

  hybr. 
  reversa, 
  Tutt 
  (crepuscularia 
  cf 
  x 
  ridingi-suffusa 
  ? 
  ). 
  

  

  C 
  YMATOPHORIDES 
  . 
  

  

  Cymatophora, 
  Hb. 
  

  

  hybr. 
  fletcheri, 
  Tutt 
  (ocularis 
  cf 
  x 
  or 
  ? 
  ). 
  

   Drepanulides. 
  

   Drepana, 
  Schrk. 
  

  

  hybr. 
  rebeli, 
  Stdfss. 
  (curvatula 
  cf 
  x 
  falcataria 
  ? 
  ). 
  

  

  hybr. 
  approximatula," 
  Apatz 
  (falcataria 
  cf 
  x 
  curvatula 
  ? 
  ). 
  

   Anthrocerides 
  . 
  

   Anthrocera, 
  Scop. 
  

  

  hybr. 
  escheri, 
  Stdfss. 
  (trifolii 
  cf 
  x 
  filipendulee 
  ? 
  ). 
  

  

  hybr. 
  intermedia, 
  Tutt 
  (filipendulee 
  cf 
  x 
  lonieeras 
  ? 
  ). 
  

  

  hybr. 
  inversa, 
  Tutt 
  (lonicerse 
  cf 
  x 
  filipendulas 
  ? 
  ). 
  

  

  hybr. 
  fletcheri, 
  Tutt 
  (trifolii 
  cf 
  x 
  lonicera 
  ? 
  ). 
  

  

  hybr. 
  worthingi, 
  Tutt 
  (lonieeras 
  cf 
  x 
  trifolii 
  ? 
  ). 
  

  

  hybr. 
  secunda, 
  Tutt 
  (lonieeras 
  <f 
  x 
  fletcheri 
  ? 
  ). 
  

  

  hybr. 
  complexa, 
  Tutt 
  (worthingi 
  cf 
  x 
  fletcheri 
  ? 
  ). 
  

  

  hybr. 
  confusa, 
  Tutt 
  (complexa 
  cf 
  x 
  trifolii 
  ? 
  ). 
  

  

  hybr. 
  complicata, 
  Tutt 
  (lonieeras 
  cf 
  x 
  complexa 
  ? 
  ). 
  

  

  hybr. 
  angloitalica, 
  Tutt 
  (filipendulas 
  <f 
  x 
  ochsenheimeri 
  ? 
  ). 
  

  

  hybr. 
  italoanglica, 
  Tutt 
  (ochsenheimeri 
  <f 
  x 
  filipendulas 
  ? 
  ). 
  

   Psychides. 
  

   Fumea, 
  Stphs. 
  

  

  hybr. 
  piingeleri, 
  Tutt 
  (casta 
  cf 
  x 
  affinis 
  ? 
  ). 
  

  

  hybr. 
  inversa, 
  Tutt 
  (affinis 
  cf 
  x 
  casta 
  ? 
  ). 
  

  

  CHAPTEE 
  II. 
  

  

  MONGKELISATION 
  IN 
  LEPIDOPTERA. 
  

  

  It 
  is 
  often 
  assumed, 
  as 
  a 
  biological 
  fact, 
  that 
  the 
  crossing 
  of 
  indi- 
  

   viduals 
  of 
  the 
  same 
  species 
  that 
  have 
  been 
  subjected 
  to 
  somewhat 
  

   different 
  conditions 
  of 
  environment 
  usually 
  results 
  in 
  the 
  production 
  

   of 
  progeny 
  that 
  are 
  more 
  vigorous 
  and 
  fertile, 
  and 
  it 
  is 
  generally 
  

   considered 
  that, 
  so 
  long 
  as 
  we 
  keep 
  strictly 
  within 
  the 
  specific 
  limit, 
  

   this 
  law 
  holds 
  good, 
  even 
  when 
  the 
  forms 
  crossed 
  constitute 
  distinct 
  

   local 
  races 
  of 
  special 
  form 
  or 
  colour. 
  Little 
  is 
  really 
  known 
  of 
  the 
  

   limitations 
  of 
  this 
  generalisation, 
  and 
  it 
  is 
  obvious 
  that, 
  if 
  local 
  races 
  

   of 
  special 
  form, 
  colour, 
  or 
  habit, 
  engendered 
  by 
  different 
  conditions 
  of 
  

   environment, 
  are 
  the 
  primary 
  steps 
  in 
  the 
  development 
  of 
  species, 
  

   exceptions 
  may 
  possibly 
  be 
  found, 
  for, 
  coupled 
  with 
  this 
  change 
  of 
  

   external 
  characters, 
  there 
  may 
  be 
  changes 
  in 
  the 
  tissues, 
  in 
  the 
  

   functional 
  details 
  of 
  the 
  organism, 
  etc., 
  superimposed 
  by 
  the 
  changed 
  

  

  