﻿XXXI 
  

  

  and 
  ofiered 
  a 
  big 
  rewards 
  So 
  I 
  got 
  3 
  pairings 
  of 
  the 
  cenea 
  inter 
  se 
  

   and 
  a 
  few 
  pupae 
  from 
  each, 
  to 
  try 
  again 
  later 
  (= 
  Families 
  1, 
  

   2 
  and 
  3). 
  These 
  started 
  emerging 
  on 
  Jan. 
  24, 
  and 
  between 
  

   some 
  of 
  the 
  ?? 
  and 
  local 
  (^<^, 
  now 
  present, 
  I 
  secured 
  pairings. 
  

   The 
  evidence 
  already 
  suggested 
  strongly 
  that 
  in 
  Fam. 
  1 
  a 
  pure 
  

   cenea 
  strain 
  had 
  been 
  secured. 
  Fam. 
  3 
  showed 
  the 
  hippocoon 
  

   element 
  again. 
  It 
  was 
  from 
  5 
  $? 
  of 
  these 
  two 
  families 
  that 
  I 
  

   secured 
  further 
  eggs, 
  now 
  pupae 
  and 
  emerging. 
  The 
  emer- 
  

   gences 
  so 
  far 
  are 
  most 
  interesting, 
  and 
  if 
  those 
  yet 
  to 
  come 
  

   don't 
  upset 
  things, 
  they 
  seem 
  already 
  to 
  amount 
  to 
  a 
  proof 
  

   of 
  Mendelian 
  inheritance. 
  

  

  " 
  Here 
  is 
  a 
  summary 
  of 
  the 
  whole 
  experiment 
  so 
  far. 
  

  

  " 
  P 
  = 
  cenea 
  $? 
  and 
  (^cJ 
  ex 
  Piatt's 
  pupae. 
  

  

  " 
  C 
  = 
  subsequent 
  complete 
  cenea 
  $? 
  (defined 
  below). 
  

  

  " 
  C'= 
  „ 
  incomplete 
  ,, 
  „ 
  „ 
  ,, 
  

  

  " 
  h 
  = 
  hippocoon 
  $ 
  ?, 
  [h] 
  = 
  captured 
  (^cj 
  (presumably 
  

   hippocoon) 
  

  

  " 
  The 
  figures 
  are 
  brought 
  up 
  to 
  April 
  19. 
  

  

  P? 
  XPc5 
  ('1') 
  P? 
  xPc^ 
  ('3') 
  

  

  0'5'x<5 
  0'y'x[li]'5' 
  C'e'x[li]'-1' 
  h'a'x[h]'4' 
  C 
  ' 
  /3 
  ' 
  X 
  [h] 
  ' 
  4 
  ' 
  

  

  None 
  yet 
  10 
  + 
  C, 
  1 
  ,J 
  10' 
  + 
  2 
  (J 
  6h 
  3h, 
  2C',3c} 
  

  

  (April 
  la) 
  

  

  So 
  that 
  from- 
  

  

  complete 
  cenea 
  X 
  hippocoon 
  I 
  have 
  in 
  F. 
  1 
  cenea 
  only 
  

  

  (incomplete 
  and 
  other), 
  

   cewea-mothered 
  hippocoon 
  X 
  hippocoon 
  I 
  have 
  in 
  F. 
  1 
  

  

  hippocoon 
  only. 
  

   cenea 
  out 
  of 
  a 
  mixed 
  family 
  X 
  hippocoon 
  I 
  have 
  in 
  F. 
  1 
  

  

  hippocoon 
  and 
  cenea. 
  

  

  " 
  So 
  far 
  as 
  I 
  have 
  gone 
  (and 
  it 
  was 
  the 
  same 
  in 
  my 
  1915 
  

   experiments 
  which 
  got 
  no 
  farther 
  than 
  F. 
  1) 
  I 
  am 
  able, 
  I 
  think, 
  

   to 
  recognise 
  complete 
  cenea 
  by 
  the 
  presence 
  of 
  dark 
  shading 
  

   at 
  the 
  base 
  of 
  the 
  h.-w. 
  under-surface 
  ; 
  incomplete 
  cenea 
  by 
  the 
  

   absence, 
  complete 
  or 
  nearly, 
  of 
  this 
  shading 
  and 
  by 
  the 
  presence, 
  

   usually, 
  of 
  pale 
  scales 
  (whitish 
  or 
  yellow) 
  below 
  the 
  main 
  f 
  .-w. 
  

   spot 
  — 
  corresponding, 
  that 
  is, 
  to 
  the 
  extension 
  in 
  hippocoon 
  of 
  the 
  

   big 
  h.-w. 
  patch 
  into 
  the 
  f.-w. 
  The 
  underside 
  difference 
  is 
  the 
  

  

  