﻿43 
  

  

  Sapenia 
  tridentata, 
  that 
  the 
  death 
  rate 
  was 
  100% 
  ; 
  the 
  experiments 
  

   were 
  made 
  in 
  placing 
  Termites 
  in 
  soil 
  known 
  to 
  contain 
  Nematodes, 
  

   and 
  in 
  12 
  days 
  all 
  the 
  Termites 
  had 
  died, 
  due 
  to 
  this 
  artificially 
  

   induced 
  parasitism. 
  The 
  injection 
  of 
  cyanide 
  of 
  potassium, 
  into 
  

   the 
  tissues 
  of 
  plants 
  (Cnlens) 
  and 
  trees, 
  as 
  the 
  elm, 
  apple, 
  pear, 
  

   plum, 
  apricot, 
  willow 
  and 
  pine, 
  as 
  an 
  insecticide 
  against 
  borers 
  and 
  

   plant 
  parasites, 
  has 
  been 
  tried 
  in 
  Kansas 
  with 
  success, 
  and 
  the 
  trees 
  

   treated 
  with 
  cyanide, 
  seemed 
  to 
  have 
  a 
  darker, 
  healthier 
  foliage 
  than 
  

   their 
  neighbours. 
  

  

  The 
  larva 
  of 
  a 
  Coccid-feeding 
  moth, 
  Hulcocera 
  iceri/acella, 
  feed 
  on 
  

   [jecaniinu 
  persicd;, 
  Saisettia 
  oleae, 
  and 
  Aspideotits 
  ca)iielli(P. 
  

  

  In 
  the 
  May 
  number 
  of 
  the 
  " 
  Bulletin 
  of 
  Ent. 
  Research," 
  1918, 
  our 
  

   member, 
  Mr. 
  C. 
  B. 
  Williams, 
  details 
  the 
  injury 
  caused 
  by 
  the 
  Sugar- 
  

   cane 
  Froghopper 
  {Toniaspis 
  aaccharina. 
  Distant) 
  in 
  Grenada. 
  A 
  

   Trinidad 
  Syrphid 
  tiy 
  {Salpiiuiogaster 
  ni;ira), 
  might 
  be 
  a 
  control, 
  but 
  

   no 
  maggots 
  of 
  this 
  were 
  found 
  ; 
  if 
  present, 
  they 
  were 
  too 
  rare 
  

   to 
  be 
  of 
  any 
  value 
  as 
  a 
  control 
  ; 
  the 
  Green 
  Muscardine 
  Fungus 
  

   [Metarrhizum 
  anisophae) 
  was 
  also 
  too 
  rare 
  to 
  be 
  of 
  any 
  value. 
  Attid 
  

   spiders, 
  were 
  very 
  scarce 
  in 
  the 
  canes. 
  A 
  few 
  examples 
  of 
  the 
  

   predaceous 
  grasshopper, 
  XipJddinni 
  fasciatiini, 
  which 
  is 
  known 
  to 
  eat 
  

   froghoppers, 
  were 
  found 
  in 
  Grenada, 
  but 
  it 
  does 
  not 
  appear 
  to 
  enter 
  

   canes. 
  The 
  probable 
  native 
  natural 
  controls 
  seemed 
  to 
  him 
  

   inadequate. 
  He 
  took 
  with 
  him 
  to 
  Grenada 
  2 
  or 
  3 
  lbs. 
  of 
  artificially 
  

   prepared 
  spores 
  of 
  the 
  Green 
  Muscardine 
  Fungus, 
  mixed 
  with 
  rice 
  

   flour 
  ; 
  the 
  spores 
  were 
  distributed 
  over 
  the 
  canes, 
  and 
  although 
  he 
  was 
  

   unable 
  to 
  see 
  the 
  result 
  himself, 
  Mr. 
  Berkeley, 
  the 
  Manager, 
  reported 
  

   that 
  a 
  number 
  of 
  dead 
  infected 
  hoppers 
  were 
  found. 
  The 
  frog- 
  

   hoppers 
  appeared 
  in 
  1917, 
  but 
  not 
  to 
  the 
  same 
  extent 
  they 
  did 
  in 
  

   1916. 
  

  

  R. 
  S. 
  Bagnall, 
  in 
  the 
  same 
  " 
  Bulletin," 
  mentions 
  and 
  describes 
  

   two 
  species 
  of 
  PhysotJirips 
  [Thijmwtjttera) 
  injurious 
  to 
  tea 
  in 
  India, 
  

   and 
  also 
  a 
  Rubber 
  Thrips 
  [Phi/sothrips 
  fnntntuia', 
  Bagn.) 
  and 
  

   P. 
  Hiarshalli, 
  the 
  former 
  from 
  Uganda, 
  the 
  latter 
  from 
  the 
  Gold 
  

   Coast, 
  and 
  P. 
  kell>janHfi 
  from 
  N. 
  Queensland. 
  

  

  Captn. 
  Davidson, 
  D.Sc, 
  discusses 
  some 
  practical 
  methods 
  adopted 
  

   for 
  the 
  control 
  of 
  flies 
  in 
  the 
  Egyptian 
  Campaign. 
  Flies 
  are 
  

   present 
  in 
  Egypt 
  all 
  the 
  year 
  round, 
  although 
  during 
  the 
  height 
  of 
  

   the 
  hot 
  weather 
  and 
  again 
  about 
  December 
  they 
  are 
  not 
  so 
  

   numerous, 
  but 
  they 
  were 
  to 
  be 
  seen 
  in 
  hundreds 
  on 
  men's 
  backs 
  

   and 
  on 
  horses. 
  When 
  the 
  troops 
  arrive 
  at 
  a 
  new 
  camp 
  area 
  

   these 
  flies 
  soon 
  lay 
  eggs, 
  and 
  unless 
  strict 
  sanitary 
  precautions 
  are 
  

   taken, 
  a 
  fly 
  plague 
  results. 
  Special 
  treatment 
  of 
  breeding-places 
  

  

  