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  HAROLD 
  H. 
  KING. 
  — 
  NOTES 
  ON 
  THE 
  BIONOMICS 
  OF 
  TAB 
  ANUS. 
  

  

  The 
  act 
  of 
  oviposition 
  was 
  not 
  witnessed. 
  The 
  time 
  occupied 
  from 
  the 
  hatching 
  

   of 
  the 
  egg 
  to 
  the 
  emergence 
  of 
  the 
  adult 
  varied 
  considerably. 
  From 
  an 
  egg-mass 
  

   which 
  hatched 
  on 
  24th 
  June 
  the 
  first 
  adult 
  was 
  obtained 
  on 
  2nd 
  November 
  ; 
  while 
  

   from 
  another 
  egg-mass 
  which 
  hatched 
  on 
  25th 
  July 
  an 
  adult 
  was 
  obtained 
  on 
  

   11th 
  September. 
  . 
  ; 
  

  

  Of 
  the 
  egg-masses 
  collected 
  at 
  Khor 
  Barboy 
  many 
  were 
  parasitised 
  by 
  an 
  

   undetermined 
  species 
  of 
  hymenopteron 
  — 
  probably 
  a 
  Telenomus. 
  

  

  Egg. 
  — 
  Length 
  about 
  1*25 
  mm., 
  of 
  the 
  typical 
  Tabanid 
  shape. 
  As 
  the 
  embryo 
  

   develops 
  the 
  ends 
  of 
  the 
  egg 
  darken, 
  giving 
  the 
  egg-mass 
  when 
  viewed 
  from 
  a 
  

   distance 
  a 
  general 
  dark 
  appearance. 
  

  

  