﻿MONGRELISATION 
  IN 
  LEPIDOPTERA. 
  61 
  

  

  Those 
  that 
  were 
  not 
  conversaria 
  were 
  in 
  these 
  broods 
  very 
  typical 
  

   (Massey, 
  in 
  litt., 
  July 
  13th, 
  1905). 
  

  

  2. 
  Cidaria 
  suffumata 
  $ 
  x 
  porrittii 
  $ 
  . 
  — 
  Paired 
  April, 
  1891 
  (Ent., 
  

   xxiv., 
  p. 
  172). 
  Only 
  seven 
  imagines 
  bred, 
  all 
  ? 
  s 
  (five 
  typical, 
  2 
  

   porrittii) 
  (South). 
  [Two 
  broods 
  of 
  typical 
  $ 
  x 
  typical 
  2 
  are 
  noted 
  

   at 
  same 
  time. 
  From 
  one, 
  3 
  $ 
  and 
  4 
  J 
  typical 
  examples 
  were 
  

   bred, 
  and 
  from 
  the 
  other 
  two 
  typical 
  £ 
  s 
  only.] 
  

  

  V. 
  Crossing 
  of 
  dimorphic 
  forms 
  of 
  a 
  species 
  which 
  occur 
  together 
  

   and 
  rarely 
  appear 
  to 
  attempt 
  to 
  supplant 
  each 
  other. 
  

  

  Probably 
  the 
  experiments 
  here 
  described 
  as 
  carried 
  out 
  on 
  the 
  red- 
  

   banded 
  Coremia 
  ferrugata 
  and 
  its 
  black-banded 
  form 
  unidentaria 
  are 
  

   best 
  considered 
  under 
  a 
  separate 
  heading. 
  Those 
  of 
  Cidaria 
  truncata 
  

   are 
  very 
  unsatisfactory, 
  the 
  $ 
  not 
  being 
  known 
  for 
  certain 
  in 
  two 
  of 
  

   the 
  cases. 
  

  

  Coremia 
  ferrugata*. 
  — 
  Prout 
  observes 
  (Trans. 
  City 
  Lond. 
  Ent. 
  

   Soc, 
  1898, 
  pp. 
  27 
  et 
  seq.) 
  that 
  intermediate 
  colour 
  aberrations 
  are 
  very 
  

   rare, 
  suggesting 
  that, 
  in 
  this 
  species, 
  from 
  red 
  to 
  black 
  is 
  the 
  simplest 
  

   change, 
  only 
  1-| 
  per 
  cent, 
  of 
  a 
  large 
  number 
  bred 
  being 
  intermediate. 
  

   Many 
  others 
  partially 
  intermediate, 
  approach 
  most 
  to 
  red, 
  and 
  are 
  

   classed 
  as 
  red. 
  His 
  results 
  are 
  too 
  detailed 
  to 
  be 
  repeated 
  at 
  length. 
  

   We 
  note 
  the 
  following 
  : 
  — 
  

  

  1. 
  Coremia 
  unidentaria 
  (black-banded) 
  $ 
  x 
  ferrugata 
  (red- 
  

   banded) 
  $ 
  . 
  — 
  A 
  large 
  brood 
  resulted 
  in 
  39 
  per 
  cent, 
  red, 
  and 
  61 
  per 
  

   cent, 
  black, 
  forms. 
  

  

  2. 
  Coremia 
  ferrugata 
  $ 
  x 
  ferrugata 
  £ 
  . 
  — 
  Nine 
  broods 
  show 
  an 
  

   average 
  of 
  about 
  68*5 
  per 
  cent, 
  red, 
  and 
  30 
  per 
  cent, 
  black, 
  forms, 
  

   the 
  rest 
  intermediate 
  ; 
  red 
  $ 
  s 
  came 
  first 
  numerically, 
  then 
  red 
  ? 
  s, 
  

   then 
  black 
  $ 
  s, 
  and 
  lastly, 
  black 
  2 
  s. 
  

  

  3. 
  Coremia 
  ferrugata 
  $ 
  x 
  unidentaria 
  $ 
  . 
  — 
  Four 
  broods 
  give 
  

   about 
  46-5 
  per 
  cent, 
  red, 
  51 
  per 
  cent, 
  black, 
  and 
  2-5 
  per 
  cent, 
  inter- 
  

   mediate, 
  forms. 
  Black 
  $ 
  s 
  were 
  most 
  numerous, 
  then 
  red 
  ? 
  s, 
  then 
  

   black 
  2 
  s, 
  and 
  lastly, 
  red 
  $■ 
  s. 
  

  

  4. 
  Coremia 
  unidentaria^ 
  x 
  unidentaria 
  5 
  . 
  — 
  Seven 
  broods 
  yielded 
  

   98-5 
  per 
  cent, 
  black, 
  none 
  red, 
  and 
  1-5 
  per 
  cent, 
  intermediate. 
  In 
  this 
  

   connection 
  it 
  should 
  be 
  noted 
  that 
  6 
  of 
  these 
  7 
  broods 
  had 
  red 
  £ 
  

   grandparent, 
  and 
  in 
  one 
  case 
  both 
  parents 
  were 
  the 
  offspring 
  of 
  a 
  red 
  

  

  $ 
  ; 
  yet 
  the 
  1-5 
  per 
  cent, 
  really 
  represents 
  only 
  a 
  single 
  intermediate 
  

   specimen. 
  None 
  of 
  the 
  broods 
  were 
  very 
  large, 
  but 
  two 
  of 
  them 
  

   contained 
  16 
  specimens 
  apiece 
  without 
  a 
  single 
  intermediate. 
  One 
  of 
  

   these 
  two 
  had 
  a 
  strong 
  reddish 
  tendency 
  in 
  the 
  £ 
  parentage, 
  and 
  was 
  

   also 
  predominantly 
  red 
  on 
  the 
  $ 
  side 
  ($ 
  was 
  one 
  of 
  a 
  brood 
  with 
  22 
  

   red 
  to 
  18 
  black.) 
  

  

  5. 
  Coremia 
  unidentaria 
  <? 
  x 
  intermedia 
  $ 
  . 
  — 
  Produced 
  (to 
  date 
  of 
  

   record) 
  three 
  black 
  specimens 
  only. 
  

  

  The 
  actual 
  numbers! 
  reared 
  of 
  14 
  of 
  the 
  broods 
  of 
  which 
  both 
  

   parents 
  (and 
  both 
  ? 
  grandparents) 
  were 
  known, 
  and 
  which 
  produced 
  

   328 
  specimens, 
  subdivided 
  into 
  — 
  

  

  (a) 
  One 
  brood, 
  red 
  ? 
  (red 
  ? 
  parent) 
  x 
  blaok 
  <J 
  (black 
  ? 
  parent)— 
  giving 
  17 
  

   S 
  s 
  and 
  10 
  ? 
  s 
  red, 
  31 
  <? 
  S 
  and 
  11 
  ? 
  S 
  black, 
  intermediate, 
  specimens. 
  

  

  (6) 
  Three 
  broods, 
  red 
  ? 
  s 
  (red 
  $ 
  parent) 
  x 
  red 
  <js(red 
  ? 
  parent) 
  — 
  giving 
  L3 
  js 
  

   and 
  14 
  $ 
  s 
  red, 
  10 
  (or 
  11) 
  s 
  s 
  and 
  11 
  (or 
  10) 
  ? 
  s 
  black, 
  intermediate. 
  

  

  * 
  The 
  allied 
  red-banded 
  species 
  is 
  known 
  as 
  ('. 
  spadicearia. 
  

   f 
  Incases 
  where 
  these 
  numbers 
  differ 
  from 
  those 
  published 
  in 
  the 
  original 
  paper. 
  

   the 
  figures 
  have 
  been 
  supplied 
  by 
  Mr. 
  Trout, 
  and 
  include 
  the 
  later 
  emergences. 
  

  

  