﻿460 
  

  

  fields, 
  and 
  in 
  December, 
  spraying 
  with 
  Bordeaux 
  mixture 
  to 
  which 
  was 
  

   added 
  1 
  per 
  cent, 
  of 
  Lysol. 
  In 
  the 
  north, 
  successful 
  spraying 
  expei- 
  

   ments 
  against 
  cacao 
  beetles 
  were 
  carried 
  out 
  with 
  arsenate 
  of 
  lead, 
  

   and 
  systematic 
  cutting 
  out 
  of 
  larvae 
  and 
  trapping 
  of 
  beetles 
  yielded 
  

   good 
  results. 
  The 
  best 
  formula 
  for 
  general 
  use 
  was 
  found 
  to 
  be 
  4 
  lb. 
  

   arsenate 
  of 
  lead 
  (paste) 
  and 
  4 
  lb. 
  temper 
  lime 
  to 
  50 
  gallons 
  of 
  water. 
  

   AA^hen 
  Bordeaux 
  mixture 
  is 
  used, 
  4 
  lb. 
  of 
  arsenate 
  of 
  lead 
  should 
  be 
  

   added 
  to 
  every 
  50 
  gallons 
  of 
  the 
  mixture. 
  Twig-girdlers 
  occurred 
  in 
  

   fair 
  numbers 
  in 
  November 
  and 
  December, 
  and 
  care 
  should 
  be 
  taken 
  to 
  

   collect 
  and 
  burn 
  all 
  twigs 
  in 
  which 
  they 
  exist. 
  On 
  the 
  sugar-canes, 
  

   the 
  froghoppers 
  have 
  not 
  been 
  so 
  numerous 
  as 
  in 
  1912, 
  owing 
  to 
  the 
  

   unusually 
  damp 
  season. 
  The 
  froghopper 
  egg-parasite, 
  Oligosila 
  

   girauUi, 
  was 
  numerous 
  in 
  November 
  and 
  December, 
  especially 
  in 
  »rass 
  

   jfields, 
  and 
  was 
  colonised 
  in 
  a 
  field 
  of 
  22 
  acres 
  in 
  July. 
  The 
  SyrphicI 
  , 
  

   Salpingogaster 
  nigut, 
  was 
  less 
  numerous 
  than 
  in 
  1912, 
  seeming 
  to 
  

   thrive 
  best 
  in 
  damp 
  weather. 
  Mexican 
  bugs 
  are 
  still 
  being 
  reared 
  in 
  

   the 
  laboratory 
  and 
  liberated 
  on 
  sugar 
  estates 
  in 
  the 
  adult 
  stage 
  ; 
  so 
  

   far 
  they 
  have 
  not 
  been 
  established 
  permanently. 
  No 
  serious 
  out- 
  

   break 
  of 
  small 
  moth-borers 
  {Diatrea), 
  striped 
  loopers, 
  or 
  caterpillars 
  

   was 
  observed 
  during 
  the 
  year, 
  no 
  doubt 
  owing 
  to 
  the 
  efficiency 
  of 
  para- 
  

   sites. 
  The 
  giant 
  moth 
  borer, 
  Castnia 
  licus, 
  still 
  continues 
  to 
  occur 
  

   in 
  some 
  localities, 
  but 
  on 
  estates 
  on 
  which 
  the 
  moths 
  are 
  caught 
  regu- 
  

   larly 
  this 
  pest 
  seems 
  to 
  be 
  diminishing. 
  

  

  No 
  serious 
  outbreak 
  of 
  any 
  coconut 
  pest 
  was 
  reported 
  during 
  the 
  

   year, 
  though 
  sporadic 
  cases 
  of 
  severe 
  infestation 
  by 
  the 
  coconut 
  scale, 
  

   Aspidiotus 
  destructor, 
  occurred, 
  but 
  w^ere 
  controlled 
  by 
  spraying 
  with 
  

   lime-sulphur 
  wash. 
  It 
  was 
  found 
  that 
  destroying 
  the 
  Balata 
  ants 
  and 
  

   their 
  nests 
  on 
  the 
  coconut 
  trees 
  assisted 
  considerably 
  the 
  control 
  of 
  

   the 
  scale-insects 
  by 
  their 
  natural 
  enemies. 
  

  

  Sasscer 
  (E. 
  R.). 
  Notes 
  on 
  Entomological 
  Inspection 
  in 
  the 
  District 
  

   of 
  Columbia. 
  — 
  JL 
  Econ. 
  Entom., 
  Concord, 
  vii, 
  no. 
  2, 
  April 
  1914, 
  

   pp. 
  240-244. 
  

  

  There 
  are 
  two 
  classes 
  of 
  inspection 
  in 
  the 
  District 
  of 
  Columbia, 
  

   commercial 
  and 
  departmental. 
  The 
  former 
  consists 
  in 
  the 
  inspection 
  

   of 
  all 
  imports 
  for 
  florists, 
  department 
  stores 
  and 
  private 
  individuals, 
  

   and 
  includes 
  such 
  plants 
  as 
  boxwood, 
  azaleas, 
  rhododendrons, 
  roses, 
  

   orchids, 
  etc. 
  Departmental 
  inspection 
  includes 
  the 
  examination 
  of 
  

   all 
  plants 
  and 
  plant 
  products 
  introduced 
  and 
  distributed 
  by 
  the 
  

   office 
  of 
  the 
  Foreign 
  Seed 
  and 
  Plant 
  Introduction, 
  as 
  well 
  as 
  other 
  

   offices 
  of 
  the 
  Bureau 
  of 
  Plant 
  Industry. 
  Examples 
  are 
  given 
  of 
  the 
  

   finding 
  of 
  pests 
  in 
  shipments 
  of 
  produce 
  which, 
  but 
  for 
  inspection, 
  

   might 
  have 
  become 
  acclimatised 
  pests. 
  One 
  consignment 
  . 
  of 
  mango 
  

   plants 
  from 
  Java 
  was 
  found 
  to 
  contain 
  the 
  following 
  scale-insects 
  : 
  

   Leucaspis 
  indica, 
  Marl., 
  Fiorinia 
  theae, 
  Pseudaonidia 
  clavigera, 
  

   P. 
  trilobitiformis, 
  Chrysomphalus 
  (Aspidiotus) 
  dictyospermi, 
  Aspidiotus 
  

   palmae, 
  A. 
  lataniae, 
  A. 
  hederae, 
  Parlatoria 
  pseudaspidiotus, 
  Lind., 
  

   Vinsonia 
  sieUifera, 
  Lecanium 
  sp., 
  Pseudococcus 
  sp., 
  Ceroplastes 
  sp., 
  

   and 
  in 
  addition 
  several 
  gall 
  insects. 
  Potatoes 
  from 
  Peru, 
  

   Bolivia, 
  and 
  Ancud 
  or 
  San 
  Carlos 
  and 
  Castro 
  Islands, 
  Chile, 
  were 
  infested 
  

   with 
  the 
  potato 
  weevil, 
  Rhigopsidius 
  iucumanus 
  ; 
  potatoes 
  from 
  Peru 
  

   were 
  also 
  infested 
  with 
  two 
  new 
  species 
  of 
  Aveevil. 
  Red 
  mangroves, 
  

   Heriteria 
  littorrdis. 
  were 
  found 
  to 
  contain 
  a 
  number 
  of 
  Cryptorhynchid 
  

  

  