﻿307 
  

  

  The 
  American 
  robin 
  {Planesticus 
  migratorius) 
  probably 
  appears 
  

   earliest 
  in 
  the 
  year 
  ; 
  its 
  food 
  consists 
  largely 
  of 
  cutworms. 
  The 
  blue 
  

   bird 
  {Sialia 
  sialis) 
  is 
  not 
  so 
  common 
  in 
  the 
  Ottawa 
  district 
  ; 
  insects, 
  

   such 
  as 
  grasshoppers, 
  beetles, 
  and 
  caterpillars, 
  constitute 
  about 
  68 
  

   per 
  cent, 
  of 
  its 
  food. 
  Wrens, 
  such 
  as 
  the 
  house 
  wren 
  (Troglodytes 
  

   aedon), 
  chicadees 
  (Penthestes 
  atricapillus 
  and 
  others), 
  martins 
  (Progne 
  

   suhis 
  and 
  others), 
  the 
  tree 
  swallow 
  (Iridoproche 
  bicolor), 
  two 
  of 
  the 
  

   woodpeckers 
  (Colaptes 
  auratus 
  and 
  Dryohates 
  pubescens), 
  etc., 
  are 
  

   readily 
  attracted 
  by 
  nesting 
  boxes, 
  of 
  which 
  various 
  forms 
  are 
  des- 
  

   cribed. 
  Such 
  boxes 
  are 
  not 
  costly, 
  and 
  experience 
  has 
  shown 
  that 
  they 
  

   help 
  to 
  solve 
  the 
  problem 
  of 
  destroying 
  various 
  pests. 
  

  

  Greene 
  (C. 
  T.). 
  The 
  Cambium 
  Miner 
  in 
  River 
  Birch. 
  — 
  JL 
  Agric. 
  

   Research, 
  Washington, 
  i, 
  no. 
  6, 
  March 
  1914, 
  pp. 
  471-474, 
  2 
  pi. 
  

  

  The 
  fly 
  Agromyza 
  pruinosa 
  belongs 
  to 
  a 
  family 
  of 
  leaf 
  and 
  stem 
  

   miners, 
  but 
  is 
  remarkable 
  in 
  that 
  it 
  mines 
  in 
  the 
  cambium 
  ; 
  the 
  mine 
  

   leaves 
  a 
  scar 
  known 
  as 
  the 
  " 
  pith-ray 
  fleck," 
  and 
  on 
  birch 
  trees 
  in 
  

   Europe 
  it 
  is 
  the 
  work 
  of 
  A. 
  carbonaria. 
  A. 
  pruinosa 
  has 
  been 
  reared 
  

   from 
  birch 
  trees 
  in 
  America, 
  and 
  similar, 
  if 
  not 
  identical, 
  species 
  have 
  

   been 
  found 
  on 
  red 
  maple 
  (Acer 
  rubrmn) 
  and 
  wild 
  cherry. 
  The 
  trees 
  

   attacked 
  are 
  outwardly 
  healthy, 
  and 
  the 
  damage 
  can 
  only 
  be 
  seen 
  on 
  

   exposing 
  the 
  cambium, 
  which 
  shows 
  the 
  galleries 
  made 
  by 
  the 
  insect. 
  

   Larvae, 
  kept 
  in 
  jars 
  containing 
  earth 
  and 
  sand, 
  emerged 
  as 
  adults 
  at 
  

   the 
  end 
  of 
  April 
  and 
  the 
  beginning 
  of 
  May. 
  The 
  larvae 
  emerge 
  from 
  

   the 
  roots 
  and 
  pupate 
  in 
  the 
  earth. 
  A 
  hymenopterous 
  parasite 
  of 
  the 
  

   miner 
  has 
  been 
  reared 
  ; 
  this 
  parasite, 
  Sympha 
  agromyzae, 
  lays 
  its 
  egg 
  

   in 
  the 
  egg 
  of 
  the 
  host 
  ; 
  no 
  sign 
  that 
  the 
  host 
  is 
  parasitised 
  is 
  recog- 
  

   nisable 
  until 
  after 
  pupation, 
  when 
  the 
  parasite 
  emerges 
  from 
  the 
  pupal 
  

   case 
  of 
  the 
  dipteron. 
  

  

  Knab 
  (F.). 
  On 
  the 
  Genus 
  Cryptochaetum. 
  — 
  Insec. 
  Inscit. 
  Mensiruiis, 
  

   Washington, 
  ii, 
  no. 
  3, 
  March 
  1914, 
  pp. 
  33-36 
  

  

  The 
  author 
  revises 
  the 
  Cecidomyid 
  genus 
  Cryptochoetum, 
  which 
  is 
  

   important 
  in 
  that 
  it 
  contains 
  species 
  which 
  are 
  parasitic 
  on 
  scale- 
  

   insects 
  and 
  have 
  been 
  used 
  in 
  America 
  for 
  their 
  control. 
  The 
  species 
  

   referred 
  to 
  and 
  described 
  are 
  Cryptochoetum 
  iceryae, 
  WilHston, 
  and 
  

   C 
  monophlebi, 
  Skuse, 
  both 
  formerly 
  placed 
  in 
  the 
  genus 
  Lestophonus 
  

   and 
  parasitic 
  on 
  Icerya 
  purchasi, 
  and 
  C. 
  curtipenne, 
  sp. 
  n., 
  bred 
  from 
  

   the 
  scale-insect 
  Walkeriuna 
  (?) 
  kandyense 
  in 
  Ceylon. 
  

  

  Crawford 
  (J. 
  C). 
  Three 
  New 
  Hymenoptera 
  (Chalcidoidea). 
  — 
  Insec. 
  

   Inscit. 
  Menstruus, 
  Washington, 
  ii, 
  no. 
  3, 
  March 
  1914, 
  pp. 
  36-38. 
  

  

  Three 
  new 
  species 
  of 
  Chalcid 
  parasites 
  are 
  described 
  : 
  Pachyneuron 
  

   hammari, 
  bred 
  from 
  codhng 
  moth 
  at 
  Kosewell, 
  New 
  Mexico 
  ; 
  Cyrto- 
  

   gaster 
  glasgowi, 
  reared 
  from 
  puparia 
  of 
  Brachydeutera 
  argentata 
  at 
  

   Urbana, 
  Ilhnois 
  ; 
  and 
  Pleurotropis 
  testaceipes, 
  from 
  a 
  leaf-miner 
  on 
  

   an 
  imdetermined 
  plant 
  at 
  Batesburg, 
  S. 
  Carolina. 
  

  

  (C30) 
  c2 
  

  

  