﻿252 
  

  

  mate 
  and 
  the 
  female 
  deposits 
  a 
  single 
  winter 
  egg 
  in 
  the 
  crevices 
  of 
  

   Cottonwood 
  bark 
  ; 
  the 
  following 
  spring 
  the 
  young 
  louse 
  hatching 
  

   from 
  the 
  egg 
  ascends 
  the 
  tree 
  and 
  forms 
  a 
  gall, 
  in 
  which 
  a 
  single 
  

   generation 
  of 
  lice 
  is 
  produced, 
  all 
  of 
  which 
  are 
  winged 
  and 
  become 
  

   the 
  summer 
  migrants 
  ; 
  these 
  migrants 
  fly 
  to 
  beets, 
  weeds 
  and 
  

   grasses 
  and 
  upon 
  the 
  leaves 
  of 
  these 
  plants 
  give 
  birth 
  to 
  young 
  which 
  

   descend 
  to 
  the 
  roots 
  and 
  start 
  new 
  colonies 
  of 
  wingless 
  viviparous 
  

   females. 
  

  

  Matheson 
  (R.). 
  The 
  San 
  Jos6 
  Scale 
  in 
  Nova 
  Scotia. 
  — 
  Jl 
  Econ. 
  Entom., 
  

   Concord., 
  vii, 
  no. 
  1, 
  Feb. 
  1914, 
  pp. 
  141-147, 
  1 
  fig. 
  

  

  In 
  that 
  part 
  of 
  Nova 
  Scotia 
  extending 
  from 
  Windsor 
  to 
  Digby, 
  

   known 
  as 
  the 
  " 
  fruit 
  belt," 
  the 
  San 
  Jose 
  scale 
  (Aspidiotus 
  perniciosus) 
  

   appeared 
  for 
  the 
  first 
  time 
  in 
  1911. 
  In 
  spite 
  of 
  the 
  severity 
  of 
  the 
  

   climate 
  compared 
  with 
  that 
  of 
  the 
  more 
  southern 
  areas 
  infested 
  by 
  

   this 
  insect, 
  it 
  has 
  survived 
  through 
  two 
  winters 
  and 
  in 
  1913 
  gave 
  rise 
  

   to 
  two 
  complete 
  generations, 
  a 
  third 
  being 
  expected. 
  In 
  the 
  spring 
  

   of 
  1913 
  a 
  thorough 
  inspection 
  was 
  inaugurated, 
  the 
  object 
  of 
  which 
  

   was 
  to 
  find 
  out 
  the 
  number 
  of 
  trees 
  destroyed 
  by 
  the 
  scale 
  on 
  various 
  

   properties 
  under 
  different 
  conditions 
  of 
  cultivation, 
  size, 
  spraying 
  

   methods, 
  etc. 
  The 
  details 
  of 
  these 
  conditions 
  are 
  not 
  cited, 
  but 
  tables 
  

   are 
  given 
  which 
  show 
  that 
  the 
  number 
  of 
  trees 
  destroyed 
  in 
  1913 
  after 
  

   control 
  methods 
  had 
  been 
  adopted 
  was 
  greatly 
  reduced 
  from 
  the 
  

   number 
  destroyed 
  in 
  1912, 
  before 
  such 
  control 
  had 
  been 
  begun. 
  The 
  

   author 
  believes 
  that 
  it 
  is 
  possible 
  to 
  eradicate 
  this 
  pest, 
  or 
  to 
  keep 
  it 
  

   in 
  check 
  so 
  that 
  there 
  will 
  be 
  no 
  danger 
  of 
  the 
  old 
  orchards 
  becoming 
  

   infested, 
  provided 
  that 
  the 
  regulations 
  governing 
  the 
  admission 
  of 
  

   nursery 
  stock 
  into 
  the 
  province 
  be 
  properly 
  enforced. 
  

  

  Newell 
  (W.). 
  A 
  natural 
  enemy 
  of 
  the 
  Argentine 
  Ant.— 
  JZ. 
  Econ. 
  

   Entom., 
  Concord., 
  vii, 
  no. 
  1, 
  Feb. 
  1914, 
  p. 
  147. 
  

  

  The 
  abundance 
  of 
  the 
  Argentine 
  Ant 
  (Iridomyrmex 
  humilis) 
  in 
  the 
  

   southern 
  part 
  of 
  Louisiana 
  and 
  Mississippi 
  is 
  probably 
  due 
  to 
  the 
  

   absence 
  of 
  both 
  parasites 
  and 
  predaceous 
  enemies. 
  In 
  September 
  

   1913 
  ants, 
  identified 
  as 
  Eciton 
  (Acamatus) 
  schmitti, 
  Emery, 
  were 
  found 
  

   raiding 
  the 
  colonies 
  of 
  I. 
  humilis, 
  destroying 
  adults 
  and 
  carrying 
  off 
  

   the 
  larvae 
  and 
  pupae 
  ; 
  the 
  Ecitons 
  appear 
  to 
  be 
  very 
  effective 
  in 
  their 
  

   predatory 
  work, 
  destroying 
  practically 
  all 
  the 
  individuals 
  of 
  /. 
  humilis 
  

   in 
  the 
  territory 
  which 
  they 
  raid, 
  and 
  in 
  some 
  of 
  the 
  orange 
  groves 
  

   which 
  were 
  formerly 
  threatened 
  with 
  complete 
  destruction, 
  on 
  account 
  

   of 
  the 
  great 
  abundance 
  and 
  activities 
  of 
  /. 
  humilis, 
  hardly 
  a 
  specimen 
  

   of 
  that 
  species 
  can 
  be 
  found 
  since 
  the 
  visit 
  of 
  the 
  Ecitons. 
  The 
  terri- 
  

   tory 
  where 
  the 
  Ecitons 
  have 
  been 
  found 
  is 
  on 
  the 
  west 
  bank 
  of 
  the 
  

   Mississippi, 
  below 
  New 
  Orleans 
  ; 
  this 
  territory 
  is 
  almost 
  completely 
  

   surrounded 
  by 
  water, 
  so 
  that 
  it 
  is 
  improbable 
  that 
  the 
  Ecitons 
  will 
  be 
  

   able 
  to 
  leave 
  it 
  ; 
  the 
  species 
  has 
  probably 
  been 
  established 
  there 
  for 
  

   many 
  years 
  past. 
  This 
  ant, 
  which 
  is 
  the 
  first 
  important 
  enemy 
  of 
  the 
  

   Argentine 
  ant 
  to 
  be 
  discovered, 
  belongs 
  to 
  the 
  same 
  family 
  as 
  that 
  

   species 
  itself. 
  

  

  