﻿519 
  

  

  the 
  nymphs 
  remain 
  near 
  the 
  pockets 
  for 
  several 
  days, 
  clustering 
  

   together 
  at 
  night 
  and 
  on 
  cool 
  cloudy 
  days 
  ; 
  this 
  is 
  a 
  favourable 
  oppor- 
  

   tunity 
  to 
  burn 
  them 
  with 
  a 
  torch 
  or 
  prickly-pear 
  burner, 
  and 
  while 
  they 
  

   a,re 
  yet 
  feeding 
  near 
  the 
  ground 
  they 
  can 
  be 
  crushed 
  with 
  a 
  roller. 
  

   As 
  development 
  proceeds 
  and 
  food 
  becomes 
  scarce, 
  the 
  grasshoppers 
  

   migrate 
  in 
  search 
  of 
  food, 
  and 
  although 
  general 
  feeders, 
  they 
  prefer 
  

   cultivated 
  crops 
  such 
  as 
  maize, 
  cotton, 
  lucerne, 
  etc., 
  hiding 
  when 
  the 
  

   temperature 
  is 
  low 
  in 
  rubbish 
  and 
  weeds. 
  This 
  fact 
  suggests 
  placing 
  

   along 
  the 
  fences 
  bundles 
  of 
  straw^ 
  which 
  should 
  be 
  burnt 
  after 
  the 
  insects 
  

   have 
  collected 
  in 
  them. 
  When 
  migration 
  begins 
  they 
  often 
  travel 
  only 
  

   in 
  one 
  direction, 
  and 
  barriers 
  should 
  be 
  made, 
  formed 
  by 
  a 
  ditch 
  18 
  

   inches 
  deep 
  and 
  2 
  feet 
  wide, 
  with 
  the 
  side 
  next 
  to 
  the 
  threatened 
  

   field, 
  perpendicular 
  ; 
  post-holes 
  15 
  feet 
  apart 
  will 
  soon 
  be 
  filled 
  

   with 
  the 
  grasshoppers, 
  which 
  can 
  be 
  killed 
  with 
  hot 
  water 
  or 
  oil, 
  and 
  

   fresh 
  holes 
  should 
  be 
  dug 
  as 
  required. 
  Should 
  the 
  making 
  of 
  a 
  ditch 
  

   be 
  impracticable, 
  fences 
  of 
  tin 
  or 
  wood 
  can 
  be 
  put 
  up, 
  and 
  post- 
  holes 
  

   dug 
  outside 
  or 
  poison 
  baits 
  placed 
  outside 
  the 
  fence. 
  The 
  poison 
  acts 
  

   slowly 
  and 
  it 
  is 
  from 
  8 
  to 
  88 
  hours 
  before 
  the 
  grasshoppers 
  will 
  succumb, 
  

   though 
  they 
  do 
  not 
  usually 
  feed 
  after 
  taking 
  the 
  poisonous 
  mixture. 
  

   Two 
  baits 
  are 
  recommended. 
  The 
  first 
  consists 
  of 
  40 
  lb. 
  wheat 
  bran, 
  

   3-5 
  lb. 
  arsenic 
  or 
  Paris 
  green, 
  2 
  gallons 
  sorghum 
  molasses, 
  and 
  about 
  

   2 
  gallons 
  of 
  water 
  ; 
  the 
  dry 
  materials 
  to 
  be 
  well 
  mixed 
  together 
  and 
  

   the 
  molasses 
  and 
  water 
  added, 
  and 
  appKed 
  in 
  rows 
  across 
  the 
  line 
  

   of 
  advance, 
  near 
  the 
  fence 
  and 
  weeds 
  which 
  provide 
  cover. 
  For 
  

   bait 
  No. 
  2 
  (Griddle 
  mixture) 
  take 
  30-40 
  lb. 
  fresh 
  horse 
  manure, 
  2-3 
  lb. 
  

   arsenic 
  or 
  Paris 
  green, 
  2 
  lb. 
  salt 
  and 
  water 
  to 
  moisten, 
  mix 
  well 
  and 
  

   apply 
  as 
  No. 
  1. 
  These 
  baits 
  should 
  be 
  put 
  out 
  in 
  the 
  afternoon, 
  so 
  that 
  

   they 
  do 
  not 
  dry 
  and 
  are 
  ready 
  w^hen 
  the 
  insects 
  are 
  hungry. 
  Thej^ 
  

   should 
  not 
  be 
  used 
  where 
  stock 
  or 
  poultry 
  have 
  access, 
  though 
  there 
  is 
  

   less 
  danger 
  of 
  poisoning 
  animals 
  with 
  bait 
  No. 
  2. 
  Grasshoppers 
  may 
  

   be 
  kept 
  from 
  fruit 
  trees 
  by 
  putting 
  a 
  6 
  inch 
  band 
  of 
  smooth 
  tin 
  around 
  

   the 
  trunk, 
  or 
  wrapping 
  it 
  with 
  cotton 
  or 
  paper 
  smeared 
  with 
  coal-tar 
  or 
  

   tanglefoot. 
  The 
  hopper-dozer 
  gives 
  good 
  results 
  in 
  grain 
  or 
  lucerne 
  

   fields 
  ; 
  the 
  borders 
  of 
  fields 
  adjacent 
  to 
  woodlands 
  and 
  meadows 
  

   should 
  be 
  kept 
  smooth, 
  so 
  that 
  the 
  hopper-dozer 
  can 
  be 
  used 
  when 
  

   the 
  infestation 
  occurs. 
  Egg-capsules 
  ploughed 
  under 
  to 
  a 
  depth 
  of 
  

   8 
  inches 
  may 
  hatch, 
  but 
  the 
  young 
  will 
  be 
  unable 
  to 
  reach 
  the 
  surface. 
  

   Autumn 
  ploughing, 
  followed 
  by 
  occasional 
  harrowing, 
  is 
  an 
  excellent 
  

   method 
  of 
  destroying 
  the 
  eggs 
  ; 
  where 
  there 
  is 
  irrigation, 
  flooding 
  is 
  

   valuable. 
  The 
  co-operation 
  of 
  all 
  farmers 
  in 
  the 
  destruction 
  of 
  these 
  

   insects 
  is 
  urged. 
  

  

  Bodkin 
  (G. 
  E.). 
  The 
  Grass 
  Moth, 
  Remigia 
  repanda. 
  — 
  Jl 
  Bd. 
  Agric, 
  

   Brit. 
  Guiana, 
  Georgetown, 
  vii, 
  no. 
  4, 
  April 
  1914, 
  pp. 
  171-177. 
  

  

  The 
  larvae 
  of 
  Remigia 
  repanda, 
  F., 
  feed 
  upon 
  sugar-cane, 
  rice. 
  Para 
  

   and 
  other 
  grasses 
  throughout 
  the 
  year, 
  appearing 
  in 
  great 
  numbers 
  

   after 
  rain, 
  following 
  a 
  long 
  drought. 
  They 
  occur 
  throughout 
  the 
  

   coast 
  lands 
  of 
  the 
  Colony 
  and 
  in 
  several 
  districts 
  of 
  the 
  interi 
  or,and 
  are 
  

   also 
  recorded 
  as 
  a 
  pest 
  in 
  Trinidad 
  and 
  Jamaica, 
  besides 
  over 
  a 
  wide 
  

   area 
  in 
  North 
  and 
  South 
  America. 
  Normally 
  the 
  grass-moth 
  is 
  easily 
  

   controlled 
  and 
  does 
  no 
  serious 
  damage, 
  but 
  fields 
  of 
  young 
  sugar-canes 
  

   between 
  two 
  and 
  four 
  months 
  old 
  are 
  sometimes 
  stripped 
  ; 
  the 
  larvae 
  

  

  