﻿58 
  

  

  seems 
  likely 
  that 
  the 
  characteristie 
  bacterial 
  parasites 
  of 
  tht-se 
  in- 
  

   sects 
  always 
  found 
  infesting 
  the 
  alimentary 
  cceca 
  in 
  adults 
  and 
  in 
  

   active 
  young, 
  are 
  ac(i[uired 
  after 
  hatching, 
  and 
  perhaps 
  after 
  the 
  bug 
  

   has 
  begun 
  to 
  feed. 
  

  

  In 
  other 
  dead 
  specimens 
  examined 
  at 
  this 
  time 
  vast 
  numbers 
  of 
  

   oval 
  protoplasmic 
  particles 
  — 
  evidently 
  cells 
  of 
  indefinite 
  shape 
  and 
  

   apparently 
  in 
  normal 
  condition 
  — 
  were 
  found 
  covering 
  the 
  muscle 
  

   fibers, 
  fatty 
  bodies, 
  etc.. 
  and 
  occurring 
  in 
  small 
  masses 
  elsewhere. 
  

   These 
  were 
  jDossibly 
  Sporozoa. 
  No 
  trace 
  of 
  fungous 
  affection 
  in 
  four 
  

   pupa^ 
  examined. 
  

  

  As 
  materials 
  for 
  a 
  study 
  of 
  causes 
  of 
  death 
  a 
  large 
  collection 
  of 
  

   living 
  chinch-bugs 
  was 
  brought 
  in 
  J 
  alij 
  IS 
  from 
  Tamaroa 
  and 
  placed 
  

   under 
  normal 
  conditions, 
  five 
  or 
  six 
  hundred 
  of 
  them 
  being 
  kej^t 
  in 
  

   an 
  open 
  box 
  and 
  supplied 
  with 
  green 
  corn 
  stalks 
  daily. 
  These 
  bugs 
  

   were 
  ver}' 
  nearly 
  all 
  adults 
  and 
  man}' 
  of 
  them 
  were 
  /// 
  copula, 
  and 
  

   many 
  eggs 
  had 
  been 
  laid 
  in 
  transit. 
  

  

  July 
  14. 
  Ten 
  dead 
  bugs 
  i*emoved 
  to 
  dam]) 
  sand 
  in 
  covered 
  glass 
  

   dish. 
  July 
  If), 
  18, 
  and 
  lU, 
  no 
  noticeable 
  dianire: 
  J\dy 
  20. 
  observa- 
  

   tion 
  discontinued: 
  

  

  July 
  15. 
  Eleven 
  removed 
  to 
  damp 
  sand. 
  July 
  Ki, 
  two 
  covered 
  

   with 
  Eniomophthovd 
  (ipJiidii!. 
  July 
  18. 
  no 
  further 
  development 
  of 
  

   fungus; 
  several 
  bugs 
  undergoing 
  bacterial 
  decomposition. 
  July 
  19, 
  

   no 
  change; 
  July 
  20. 
  discontinued. 
  

  

  July 
  16. 
  Fifteen 
  dead 
  specimens 
  removed. 
  July 
  10. 
  p. 
  m., 
  two 
  

   exhibited 
  Entomophthora: 
  July 
  18, 
  one 
  case 
  of 
  Sporotrichum, 
  sev- 
  

   eral 
  cases 
  of 
  l)acterial 
  decay. 
  July 
  20, 
  no 
  change: 
  Sporotrichum 
  

   fruiting. 
  July 
  23, 
  25, 
  27, 
  no 
  change. 
  July 
  29, 
  discontinued. 
  

  

  July 
  17. 
  Eighteen 
  specimens 
  removed. 
  July 
  18, 
  four 
  with 
  Ento- 
  

   mophthora; 
  July 
  19, 
  no 
  change. 
  July 
  20. 
  Entomophthora 
  deliques- 
  

   cent: 
  one 
  bug 
  completely 
  imbedded 
  in 
  Sporotrichum: 
  several 
  ex- 
  

   amples 
  of 
  bacterial 
  decay. 
  July 
  2o. 
  25. 
  27. 
  no 
  change. 
  July 
  29, 
  dis- 
  

   continued. 
  

  

  July 
  18. 
  Eight 
  specimens 
  removed. 
  July 
  19. 
  one 
  with 
  Ento- 
  

   mophthora: 
  July 
  20, 
  a 
  second 
  with 
  Entomophthora 
  and 
  three 
  with 
  

   Sporotrichum. 
  July 
  23. 
  25, 
  and 
  27, 
  no 
  change. 
  

  

  July 
  20. 
  Twenty-four 
  specimens 
  removed. 
  July 
  23. 
  tive 
  with 
  

   Sporotrichum 
  (three 
  covered 
  with 
  well-developed 
  fungus 
  and 
  two 
  

   with 
  immature): 
  several 
  specimens 
  undergoing 
  bacterial 
  decay. 
  

   July 
  25, 
  immature 
  Sporotrichum 
  developed. 
  July 
  27, 
  no 
  change: 
  

   July 
  29, 
  discontinued. 
  

  

  July 
  21. 
  Twt>lve 
  specimi-ns 
  removed. 
  July 
  23, 
  one 
  case 
  of 
  Sporo- 
  

   trichum. 
  July 
  25, 
  bacterial 
  decay 
  in 
  a 
  few 
  examples. 
  .luly 
  27, 
  no 
  

   change. 
  

  

  July 
  22. 
  Six 
  specimens 
  removed. 
  July 
  23. 
  two 
  cases 
  of 
  Sporo- 
  

   trichum. 
  Julv 
  27. 
  no 
  chanare: 
  Julv 
  29. 
  discontinued. 
  

  

  