﻿167 
  

  

  In 
  carefully 
  exa.mining 
  these 
  moths, 
  it 
  could 
  be 
  seen 
  that 
  there 
  

   was 
  quite 
  a 
  little 
  difference 
  between 
  the 
  lightest 
  and 
  the 
  darkest 
  

   colored 
  of 
  each 
  sex, 
  and 
  a 
  close 
  series 
  in 
  between. 
  The 
  males 
  

   normally 
  are 
  lighter 
  colored 
  than 
  the 
  females. 
  

  

  From 
  this 
  lot 
  of 
  moths, 
  pairs 
  were 
  selected 
  for 
  breeding. 
  In 
  

   each 
  case, 
  copulation 
  took 
  place 
  and 
  eggs 
  were 
  produced 
  in 
  one 
  to 
  

   five 
  days. 
  These 
  hatched, 
  and 
  tlie 
  moths 
  were 
  reared 
  in 
  the 
  

   usual 
  period 
  of 
  time. 
  

  

  Lot 
  A. 
  — 
  A 
  light-colored 
  male 
  and 
  female. 
  Only 
  a 
  few 
  moths 
  

   matured. 
  There 
  was 
  nothing 
  particularly 
  striking 
  about 
  them, 
  

   being 
  about 
  the 
  average 
  coloration. 
  An 
  attempt 
  to 
  breed 
  a 
  second 
  

   generation 
  was 
  not 
  successful. 
  

  

  Lot 
  B. 
  — 
  This 
  pair 
  was 
  a 
  dark-colored 
  female, 
  and 
  a 
  light- 
  

   colored 
  male. 
  25 
  adult 
  moths 
  were 
  reared. 
  They 
  were 
  about 
  

   normal 
  as 
  regards 
  variation 
  in 
  color 
  — 
  both 
  light 
  forms 
  and 
  dark 
  

   forms. 
  From 
  these 
  a 
  dark 
  female 
  and 
  a 
  normal 
  male 
  were 
  

   selected 
  for 
  breeding. 
  36 
  males 
  and 
  25 
  females 
  were 
  reared. 
  

   The 
  males 
  were 
  about 
  normal 
  color, 
  but 
  several 
  were 
  darker; 
  the 
  

   females 
  were 
  predominatingly 
  of 
  the 
  darker 
  form. 
  

  

  Lot 
  C. 
  — 
  A 
  pair 
  of 
  dark 
  moths. 
  From 
  these, 
  22 
  adult 
  moths 
  

   were 
  reared. 
  Both 
  sexes 
  were 
  predominatingly 
  darker 
  than 
  the 
  

   average 
  normal. 
  A 
  pair 
  of 
  the 
  darkest 
  were 
  mated, 
  but 
  with 
  

   little 
  success, 
  only 
  two 
  females 
  of 
  their 
  progeny 
  were 
  reared. 
  

   These 
  were 
  very 
  dark. 
  

  

  Lot 
  D. 
  — 
  This 
  was 
  a 
  very 
  light-colored 
  pair. 
  From 
  them 
  15 
  

   moths 
  were 
  reared. 
  These 
  moths 
  were 
  very 
  light-colored 
  com- 
  

   pared 
  with 
  the 
  average 
  normal 
  coloration. 
  A 
  pair 
  were 
  mated 
  

   for 
  further 
  breeding. 
  Only 
  2 
  adults 
  were 
  reared, 
  and 
  they 
  were 
  

   very 
  light. 
  

  

  These 
  experiments 
  were 
  necessarily 
  interrupted, 
  so 
  that 
  no 
  

   more 
  than 
  two 
  generations 
  were 
  reared; 
  but 
  the 
  results 
  from 
  

   these 
  indicate 
  that 
  after 
  several 
  generations 
  of 
  selected 
  pairs 
  of 
  

   extreme 
  coloration, 
  one 
  w^ould 
  arrive 
  at 
  widely 
  different 
  strains 
  

   or 
  varieties. 
  

  

  Some 
  Coccidae 
  From 
  Singapore 
  Collected 
  by 
  F. 
  Muir. 
  

  

  BY 
  JACOB 
  KOTINSKY. 
  

  

  By 
  courtesy 
  of 
  the 
  Entomological 
  Division 
  of 
  the 
  H. 
  S. 
  P. 
  A. 
  

   I 
  was 
  privileged 
  to 
  examine 
  the 
  Coccidae 
  sent 
  by 
  Mr. 
  Muir 
  from 
  

  

  