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  observed 
  to 
  be 
  alive 
  were 
  believed 
  to 
  have 
  come 
  from 
  adjoining 
  

   unsprayed 
  plants. 
  In 
  a 
  few 
  days 
  the 
  plants 
  began 
  to 
  take 
  on 
  a 
  new 
  

   appearance, 
  putting 
  out 
  a 
  second 
  growth 
  of 
  leaves. 
  Three 
  weeks 
  

   afterwards, 
  however, 
  another 
  lot 
  of 
  larvae 
  attacked 
  the 
  same 
  plants. 
  

   When 
  discovered 
  they 
  were 
  full-grown 
  and 
  about 
  to 
  inflict 
  considerable 
  

   injury. 
  The 
  same 
  solution 
  was 
  applied 
  again 
  ; 
  all 
  the 
  insects 
  were 
  

   eradicated, 
  and 
  the 
  abutilon 
  plants 
  throve 
  free 
  from 
  any 
  pest 
  up 
  to 
  

   the 
  end 
  of 
  the 
  season. 
  It 
  is 
  believed 
  that 
  some 
  of 
  the 
  insects 
  were 
  in 
  

   the 
  egg 
  stage 
  when 
  the 
  first 
  spraying 
  was 
  carried 
  out 
  and 
  that 
  they 
  

   are 
  not 
  affected 
  when 
  in 
  this 
  condition. 
  None 
  of 
  the 
  insects 
  made 
  their 
  

   appearance 
  in 
  the 
  Department 
  grounds 
  during 
  1913, 
  showing 
  either 
  

   the 
  absolute 
  thoroughness 
  of 
  the 
  application, 
  or 
  possibly 
  that 
  they 
  

   never 
  returned 
  to 
  this 
  particular 
  locality. 
  A 
  bibliography 
  of 
  the 
  

   principal 
  literature 
  concludes 
  the 
  paper. 
  

  

  Patterson 
  (W. 
  H.). 
  Report 
  of 
  the 
  Entomologist. 
  — 
  Government 
  of 
  the 
  

   Gold 
  Coast, 
  Report 
  Agric. 
  Dept.for 
  1912, 
  Accra, 
  1913, 
  pp. 
  22-25. 
  

  

  The 
  slate-grey 
  leaf 
  beetle 
  {Adoretus 
  hirtellus, 
  Castn.) 
  has 
  damaged 
  

   cacao 
  foliage 
  at 
  Aburi 
  and 
  Assuantsi 
  and 
  in 
  cases 
  of 
  severe 
  attack 
  the 
  

   leaves 
  are 
  skeletonized. 
  Nothing 
  is 
  known 
  of 
  this 
  insect's 
  life- 
  

   history. 
  A 
  solution 
  of 
  lead 
  arsenate, 
  2 
  lb. 
  in 
  50 
  gals, 
  water, 
  forms 
  an 
  

   efficient 
  spray, 
  but 
  as 
  this 
  is 
  too 
  costty 
  it 
  is 
  proposed 
  to 
  try 
  lead 
  chromate 
  

   as 
  an 
  insecticide 
  for 
  insects 
  on 
  cacao. 
  The 
  grey 
  moth 
  pod-borer 
  

   {Chara£oma 
  stictigrapta, 
  Hmp.) 
  does 
  not 
  cause 
  primary 
  damage 
  of 
  

   importance, 
  as 
  usually 
  the 
  outer 
  wall 
  of 
  the 
  pod 
  alone 
  is 
  eaten, 
  but 
  

   there 
  is 
  always 
  a 
  risk 
  that 
  the 
  injured 
  area 
  may 
  give 
  saprophytic 
  and 
  

   parasitic 
  fungi 
  a 
  hold. 
  No 
  instances 
  have 
  been 
  reported 
  as 
  yet, 
  but 
  

   as 
  the 
  larvae 
  are 
  on 
  the 
  increase 
  it 
  would 
  be 
  well 
  to 
  destroy 
  them 
  when 
  

   the 
  pods 
  are 
  harvested. 
  " 
  Sankonuabe," 
  " 
  Akate," 
  cacao 
  bark-sapper, 
  

   and 
  bark-louse 
  are 
  various 
  popular 
  names 
  which 
  are 
  given 
  indis- 
  

   criminately 
  to 
  two 
  distinct 
  species 
  of 
  Capsid 
  bugs, 
  viz., 
  SaJilbergella 
  

   theohroma, 
  Dist., 
  and 
  S. 
  singularis, 
  Hagl., 
  which 
  are 
  both 
  serious 
  pests 
  

   of 
  cacao. 
  Besides 
  puncturing 
  the 
  bark 
  and 
  causing 
  it 
  to 
  split 
  open 
  

   and 
  die, 
  these 
  insects 
  also 
  pierce 
  the 
  developing 
  fruits, 
  thus 
  producing 
  

   " 
  scabby 
  " 
  pods. 
  In 
  addition 
  to 
  this 
  direct 
  damage, 
  there 
  is 
  also 
  

   grave 
  danger 
  of 
  fungoid 
  infection. 
  The 
  red 
  tree 
  ants 
  of 
  the 
  genus 
  

   Oecophylla 
  are 
  stated 
  to 
  destroy 
  these 
  pests 
  and 
  the 
  author 
  is 
  informed 
  

   that 
  the 
  native 
  farmers 
  are 
  placing 
  the 
  carton 
  nests 
  in 
  infested 
  trees 
  

   with 
  favourable 
  results. 
  Thrips 
  have 
  been 
  found 
  in 
  places 
  damaging 
  

   leaves 
  and 
  pods 
  of 
  cacao. 
  Bag-worms 
  or 
  case-worms 
  are 
  found 
  

   eating 
  cacao 
  foliage 
  or 
  branches. 
  When 
  these 
  Psychid 
  caterpillars 
  

   are 
  present 
  in 
  numbers 
  sufficient 
  to 
  cause 
  damage 
  of 
  economic 
  

   importance 
  the 
  cases 
  can 
  generally 
  be 
  collected 
  by 
  hand 
  and 
  destroyed. 
  

   The 
  Longicorn 
  stem-borers, 
  Arynatosterna 
  biiquetiana, 
  White, 
  and 
  

   Glenea 
  sp., 
  are 
  rather 
  scarce 
  at 
  present. 
  White 
  ants 
  are 
  reported 
  to 
  

   give 
  much 
  trouble 
  on 
  some 
  farms. 
  

  

  The 
  Adoretus 
  beetle 
  attacks 
  kola 
  in 
  the 
  same 
  manner 
  as 
  cacao. 
  

   Some 
  of 
  the 
  damage 
  to 
  kola 
  seeds 
  formerly 
  attributed 
  to 
  a 
  weevil, 
  

   Balanogastris 
  kolae, 
  Desbr., 
  is 
  due 
  to 
  a 
  fruit 
  fly 
  (Ceratitis 
  sp.), 
  which 
  

   lays 
  its 
  eggs 
  in 
  the 
  half-developed 
  fruit, 
  generally 
  on 
  the 
  seed 
  testa, 
  on 
  

   which 
  the 
  larvae 
  feed 
  exclusively. 
  Though 
  comparatively 
  little 
  harm 
  

   is 
  done, 
  the 
  seeds 
  are 
  not 
  so 
  readily 
  marketable 
  owing 
  to 
  their 
  becoming 
  

  

  