﻿668 
  

  

  generation 
  appear 
  to 
  be 
  similar 
  to 
  those 
  of 
  the 
  second. 
  The 
  author 
  

   gives 
  the 
  name 
  of 
  hemialatae 
  to 
  incompletely 
  alate 
  individuals 
  of 
  

   the 
  third 
  generation. 
  The 
  life 
  of 
  the 
  third 
  generation 
  depends 
  on 
  

   the 
  food 
  capacity 
  of 
  the 
  host-plant. 
  The 
  sexual 
  forms 
  appear 
  about 
  

   August 
  on 
  the 
  Igelsberg. 
  The 
  winter-eggs 
  are 
  destroyed 
  in 
  immense 
  

   quantities 
  during 
  the 
  winter 
  and 
  this 
  contributes 
  to 
  the 
  continuance 
  

   of 
  the 
  species, 
  otherwise 
  the 
  huge 
  numbers 
  would 
  destroy 
  the 
  

   host-plants. 
  The 
  prolific 
  nature 
  of 
  the 
  fundatrix 
  (100 
  to 
  200 
  eggs) 
  

   and 
  of 
  the 
  second 
  generation 
  (40 
  to 
  60 
  eggs) 
  is 
  quite 
  sufficient 
  to 
  

   balance 
  the 
  destruction 
  of 
  999 
  out 
  of 
  every 
  1,000 
  winter-eggs 
  laid. 
  

   Late 
  in 
  the 
  year, 
  the 
  author 
  has 
  often 
  noticed 
  newly 
  hatched 
  young 
  

   which 
  he 
  beheves 
  to 
  be 
  a 
  fourth 
  non-sexual 
  generation. 
  Possibly 
  they 
  

   belong 
  to 
  a 
  much 
  retarded 
  third 
  generation. 
  The 
  paper 
  closes 
  with 
  

   a 
  bibliography 
  of 
  49 
  works. 
  

  

  LtJSTNER 
  (G.). 
  Relation 
  between 
  the 
  Larvae 
  of 
  Vine 
  Moths 
  (Conchylis 
  

   ambiguella 
  and 
  Polychrosis 
  botrana) 
  and 
  the 
  Weeds 
  of 
  Vineyards 
  

   and 
  other 
  Plants. 
  — 
  Zeitschr. 
  f. 
  Weinhau 
  und 
  Weinbehandlung 
  

   Berlin, 
  i, 
  no. 
  1, 
  1914, 
  pp. 
  3-35. 
  

  

  The 
  author 
  has 
  experimented 
  with 
  92 
  species 
  of 
  plants, 
  mostly 
  

   vineyard 
  weeds, 
  as 
  food 
  for 
  the 
  larvae 
  of 
  Clysia 
  and 
  Polychrosis. 
  In 
  

   the 
  case 
  of 
  the 
  former 
  species 
  the 
  experiments 
  were 
  carried 
  out 
  from 
  

   the 
  beginning 
  of 
  September 
  to 
  the 
  middle 
  of 
  October 
  and 
  the 
  larvae 
  

   were 
  found 
  to 
  be 
  distinctly 
  polyphagous, 
  devouring 
  even 
  Euphor- 
  

   biaceous 
  plants. 
  It 
  is 
  therefore 
  concluded 
  that 
  the 
  mere 
  spreading 
  

   of 
  obnoxious 
  substances 
  over 
  the 
  buds 
  and 
  fruits 
  of 
  the 
  vine 
  will 
  be 
  

   of 
  Httle 
  use 
  against 
  these 
  larvae. 
  They 
  were 
  also 
  found 
  to 
  devour 
  the 
  

   tips 
  of 
  shoots 
  and 
  young 
  leaves, 
  which 
  are 
  not 
  generally 
  found 
  to 
  be 
  

   attacked. 
  It 
  is 
  concluded 
  that 
  these 
  pests 
  feed 
  on 
  the 
  shoots 
  of 
  the 
  

   vine, 
  or 
  failing 
  this 
  on 
  common 
  weeds, 
  so 
  that 
  measures 
  for 
  the 
  control 
  

   of 
  the 
  pest 
  by 
  the 
  immediate 
  removal 
  of 
  the 
  fruit 
  attacked 
  are 
  not 
  

   adequate 
  ; 
  enclosing 
  the 
  bunches 
  of 
  grapes 
  in 
  bags 
  serves 
  to 
  protect 
  

   the 
  fruit, 
  but 
  does 
  not 
  decrease 
  the 
  danger 
  of 
  the 
  spread 
  of 
  the 
  insects 
  ; 
  

   brushing 
  the 
  first 
  shoots 
  showing 
  signs 
  of 
  attack 
  is 
  not 
  effective 
  in 
  

   destroying 
  the 
  larvae, 
  since 
  they 
  find 
  shelter 
  elsewhere, 
  and 
  this 
  

   procedure 
  is 
  hable 
  to 
  cause 
  damage 
  to 
  the 
  shoots 
  themselves. 
  

  

  Vassiliev 
  (I. 
  v.). 
  fnaBHtMiiiifl 
  HactKOMbm, 
  Bpeflfliuiifl 
  JnouepHt. 
  

   HacTb 
  M. 
  JliouepHOBbm 
  gjiohmkii, 
  ero 
  onMcaHie, 
  o6pa3i> 
  >kii3HH 
  

   M 
  M^pbl 
  6opb6bl 
  Cb 
  HMMl). 
  [The 
  principal 
  insects 
  injurious 
  to 
  

   Lucerne. 
  Part 
  II. 
  Otiorrhynchus 
  {Cryjphij)horus) 
  ligustici, 
  L., 
  its 
  

   description, 
  life-habits, 
  and 
  methods 
  of 
  fighting 
  it.] 
  — 
  Second, 
  

   (enlarged) 
  edition. 
  — 
  «Tpyflbl 
  Biopo 
  no 
  SHTOMOnorJM 
  yHBHaro 
  

   KoMMTeTa 
  fJiaB. 
  Ynpas. 
  3. 
  H 
  3.» 
  [Memoirs 
  of 
  the 
  Bureau 
  of 
  

   Entomology 
  of 
  the 
  Scientific 
  Committee 
  of 
  the 
  Central 
  Board 
  of 
  Land 
  

   Administration 
  and 
  Agriculture,] 
  Petrograd, 
  1914, 
  39 
  pp. 
  15 
  figs. 
  

  

  This 
  paper 
  forms 
  the 
  second 
  part 
  of 
  the 
  author's 
  pubhcations 
  on 
  

   insect 
  pests 
  of 
  lucerne, 
  the 
  first 
  one 
  (Memoirs 
  of 
  the 
  Bureau 
  of 
  Ento- 
  

   mology, 
  vii 
  no. 
  4, 
  1908), 
  having 
  dealt 
  with 
  Adelphocoris 
  lineo- 
  

   latus. 
  The 
  necessity 
  for 
  a 
  closer 
  study 
  of 
  Otiorrhynchus 
  ligustici, 
  L., 
  

   arose 
  out 
  of 
  the 
  great 
  importance 
  of 
  this 
  pest 
  to 
  lucerne 
  crops 
  and 
  

  

  