﻿463 
  

  

  has 
  but 
  few 
  insect 
  enemies 
  and 
  it 
  is 
  necessary 
  for 
  them 
  to 
  appear 
  in 
  very 
  

   large 
  numbers 
  to 
  produce 
  any 
  effect 
  upon 
  the 
  crop. 
  The 
  most 
  for- 
  

   midable 
  are 
  the 
  ants 
  which 
  cut 
  the 
  leaves 
  into 
  small 
  pieces 
  and 
  carry 
  

   them 
  of? 
  to 
  form 
  their 
  nests. 
  Bisulphide 
  of 
  carbon 
  is 
  recommended 
  

   as 
  a 
  remedy, 
  the 
  use 
  of 
  poison 
  sprays 
  on 
  the 
  trees 
  being 
  excluded 
  on 
  

   account 
  of 
  the 
  use 
  to 
  which 
  the 
  leaves 
  are 
  put. 
  A 
  large 
  Bombycid 
  

   moth 
  has 
  been 
  occasionally 
  observed 
  in 
  the 
  plantations, 
  but 
  it 
  is 
  not 
  

   known 
  whether 
  the 
  larvae 
  do 
  any 
  damage. 
  

  

  Borodin 
  (Dm.). 
  Bopb6a 
  CT> 
  BpeflmejiflMM 
  h 
  6ojit3HflMii 
  caflOBij 
  B-b 
  

  

  Ma'k. 
  [The 
  fight 
  against 
  insect 
  pests 
  and 
  diseases 
  of 
  orchards 
  in 
  

   Mav.] 
  — 
  « 
  XyTOpflHMH"b.» 
  [Chutorianin], 
  Poltava, 
  no. 
  19, 
  21st 
  

   May 
  1914, 
  pp. 
  554-558, 
  3 
  figs. 
  

  

  The 
  author 
  deals 
  vdth 
  various 
  insects, 
  describes 
  the 
  stage 
  in 
  which 
  

   they 
  are 
  found 
  in 
  May, 
  and 
  gives 
  the 
  usual 
  remedies 
  against 
  them. 
  

   The 
  following 
  insects 
  are 
  mentioned 
  in 
  the 
  article. 
  The 
  imagines 
  of 
  

   Melohntha 
  melolontha, 
  against 
  which 
  he 
  recommends 
  shaking, 
  spraying 
  

   with 
  Schweinfurt 
  green 
  and 
  the 
  protection 
  of 
  starlings 
  ; 
  the 
  larvae 
  

   of 
  Anthonomus 
  jpomorum, 
  Aporia 
  crataegi 
  (which 
  pupate 
  in 
  May), 
  

   Euproctis 
  cJirt/sorrhoea, 
  Lymantria 
  dispar, 
  Malacosoma 
  neustria, 
  Cydvi 
  

   pomoneUa, 
  Hyponomeuta 
  malineUus, 
  and 
  H. 
  variabilis; 
  Aiph.ids,Psy1la 
  

   mali, 
  and 
  P. 
  pyri. 
  

  

  GuppY 
  (P. 
  L.). 
  Report 
  of 
  Entomologist 
  in 
  charge 
  of 
  Froghopper 
  

   Investigation 
  in 
  Trinidad 
  for 
  the 
  month 
  of 
  April 
  1914. 
  — 
  Enclosure 
  

   in 
  despatch 
  to 
  Colonial 
  Office, 
  25th 
  May 
  1914. 
  

  

  This 
  report 
  is 
  largely 
  occupied 
  with 
  the 
  technical 
  difficulties 
  of 
  

   breeding 
  Syrphid 
  parasites 
  of 
  froghoppers 
  in 
  specially 
  constructed 
  

   cages. 
  These 
  difficulties 
  are 
  of 
  two 
  kinds, 
  viz 
  : 
  — 
  the 
  failure 
  of 
  the 
  

   supply 
  of 
  the 
  froghopper 
  nymphs 
  for 
  the 
  food 
  of 
  the 
  Syrphids 
  and 
  

   the 
  destruction 
  of 
  the 
  flies 
  in 
  the 
  cages 
  by 
  a 
  number 
  of 
  spiders, 
  which 
  

   it 
  was 
  found 
  to 
  be 
  almost 
  impossible 
  to 
  control. 
  

  

  The 
  author 
  has 
  now 
  discovered 
  that 
  the 
  female 
  Syrphids 
  will 
  live 
  

   for 
  more 
  than 
  three 
  weeks 
  in 
  a 
  lamp 
  chimney 
  (9 
  inches 
  by 
  4 
  inches) 
  

   if 
  properly 
  treated. 
  Instead 
  of 
  using 
  the 
  large 
  cage 
  originally 
  con- 
  

   structed, 
  a 
  similar 
  one 
  has 
  been 
  arranged 
  to 
  contain 
  a 
  number 
  of 
  these 
  

   chimneys. 
  Each 
  fertilised 
  female 
  is 
  removed 
  to 
  glass 
  chimne3^s 
  with 
  

   a 
  supply 
  of 
  froghopper 
  nymphs, 
  and 
  every 
  other 
  day 
  the 
  froth 
  

   containing 
  Syrphid 
  eggs 
  is 
  removed 
  and 
  placed 
  in 
  some 
  suitable 
  

   locality. 
  In 
  this 
  way 
  it 
  is 
  hoped 
  to 
  be 
  able 
  to 
  regulate 
  supplies 
  of 
  

   Syrphids 
  according 
  to 
  supplies 
  of 
  froghopper 
  nymphs 
  obtainable. 
  

  

  The 
  scheme 
  of 
  distributing 
  eggs 
  or 
  recently 
  hatched 
  larvae 
  could 
  

   be 
  carried 
  out, 
  and 
  seems 
  to 
  be 
  more 
  likely 
  to 
  be 
  successful 
  in 
  estab- 
  

   lishing 
  the 
  Syrphid 
  in 
  suitable 
  places 
  than 
  one 
  which 
  aims 
  at 
  liberating 
  

   adults 
  for 
  the 
  same 
  purpose. 
  

  

  The 
  author 
  describes 
  his 
  attempts 
  to 
  fmd 
  Syrphids 
  in 
  their 
  usual 
  

   haunts 
  and 
  his 
  failure 
  in 
  consequence 
  of 
  the 
  weather 
  being 
  too 
  hot 
  and 
  

   dry. 
  He 
  thinks 
  that 
  small 
  scattered 
  broods 
  of 
  adults 
  remain 
  in 
  a 
  

   sort 
  of 
  dormant 
  condition 
  in 
  very 
  dry 
  weather, 
  probably 
  in 
  shady 
  

   moist 
  situations 
  on 
  the 
  borders 
  of 
  woods. 
  Observations 
  on 
  this 
  

   point 
  are 
  in 
  progress. 
  

  

  