﻿PROCEEDINGS 
  OF 
  THE 
  FOURTH 
  ENTOMOLOGICAL 
  MEETING 
  

  

  141 
  

  

  varies 
  from 
  1 
  and 
  even 
  less 
  to 
  as 
  high 
  as 
  50 
  to 
  75 
  ; 
  the 
  latter 
  was 
  often 
  

   noticeable 
  specially 
  in 
  thick 
  canes. 
  

  

  From 
  the 
  specimens 
  of 
  borers 
  reared 
  I 
  found 
  that 
  there 
  are 
  five 
  

   different 
  species, 
  viz., 
  Diatrcea 
  auricilia, 
  Emmalocera 
  (Papua) 
  depres- 
  

   sella, 
  Scirpophaga 
  xantJiogastrella 
  {auriflua), 
  Sesamia 
  uniformis 
  and 
  

   Sesamia 
  inferens, 
  while 
  Chilo 
  simplex, 
  the 
  long-known 
  moth-borer 
  of 
  

   sugarcane, 
  was 
  not 
  found 
  occurring 
  at 
  all. 
  These 
  different 
  species 
  of 
  

   borers 
  were 
  found 
  attacking 
  any 
  variety 
  of 
  cane 
  and 
  therefore 
  I 
  could 
  

   not 
  fix 
  upon 
  any 
  particular 
  variety 
  of 
  cane 
  as 
  being 
  a 
  favourite 
  food 
  

   of 
  any 
  particular 
  species 
  of 
  borer. 
  I 
  have 
  pointed 
  out 
  above 
  that 
  I 
  

   got 
  samples 
  from 
  forty 
  different 
  places 
  ; 
  these 
  however 
  do 
  not 
  represent 
  

   the 
  sugarcane 
  growing 
  tract 
  to 
  a 
  very 
  wide 
  extent, 
  but 
  can 
  be 
  considered 
  

   to 
  be 
  a 
  fairly 
  representative 
  collection. 
  In 
  the 
  table 
  below 
  I 
  have 
  

   shown 
  the 
  distribution 
  of 
  the 
  species 
  of 
  borers 
  and 
  in 
  the 
  next 
  following 
  

   damage, 
  time 
  of 
  planting 
  and 
  variety 
  of 
  cane. 
  

  

  I 
  may 
  here 
  remark 
  that 
  the 
  work 
  on 
  cane-borers 
  done 
  during 
  the 
  

   past 
  years 
  has 
  not 
  been 
  very 
  systematic 
  and 
  entirely 
  satisfactory, 
  but 
  

   this 
  is 
  all 
  that 
  could 
  be 
  done 
  by 
  the 
  very 
  inadequately 
  staffed 
  section 
  

   in 
  this 
  Province. 
  The 
  problem 
  of 
  cane-borer 
  is 
  worth 
  tackling 
  on 
  more 
  

   systematic 
  lines, 
  particularly 
  as 
  the 
  Agricultural 
  Department 
  is 
  trying 
  

   to 
  spread 
  cane 
  cultivation. 
  

  

  shows 
  presence, 
  and 
  X 
  shows 
  absence. 
  

  

  