﻿m 
  

  

  90 
  

  

  underground 
  portion 
  of 
  the 
  root 
  is 
  attacked. 
  At 
  the 
  end 
  of 
  September 
  

   many 
  larvae 
  are 
  still 
  present 
  in 
  the 
  roots, 
  but 
  pupae 
  and 
  some 
  adults 
  

   also 
  are 
  to 
  be 
  found. 
  The 
  latter 
  either 
  remain 
  in 
  the 
  pupal 
  chamber 
  

   or 
  emerge 
  into 
  the 
  open. 
  On 
  warm 
  sunny 
  days 
  they 
  may 
  be 
  seen 
  

   feeding 
  on 
  the 
  leaves. 
  Collectors 
  consider 
  T. 
  mendicus 
  to 
  be 
  rare, 
  but 
  it 
  

   fairly 
  overruns 
  the 
  beet-fields 
  of 
  the 
  Agricultural 
  School 
  at 
  Montpellier 
  

   in 
  Herault. 
  In 
  1913 
  all 
  the 
  roots 
  there 
  had 
  been 
  attacked. 
  The 
  

   necessity 
  for 
  a 
  mild 
  climate 
  and 
  compact 
  clay 
  soil. 
  limits 
  its 
  spread, 
  for 
  

   beetroot 
  can 
  only 
  be 
  successfully 
  grown 
  in 
  a 
  loose 
  deep 
  soil. 
  Wherever 
  

   Temnorrhinus 
  finds 
  its 
  favourite 
  plant 
  under 
  the 
  above 
  conditions, 
  it 
  

   speedily 
  develops 
  into 
  a 
  terrible 
  pest. 
  In 
  Russia 
  and 
  Hungary 
  

   B. 
  punctiventris 
  and 
  B. 
  betavorus, 
  Chev., 
  are 
  only 
  too 
  well 
  known. 
  

   The 
  former 
  is 
  also 
  a 
  southern 
  species, 
  but 
  is 
  rare 
  in 
  Herault, 
  as 
  it 
  

   requires 
  a 
  sandy 
  soil. 
  Many 
  Cleonids 
  living 
  on 
  Salsolaceae 
  will 
  attack 
  

   beetroot. 
  Thus 
  Temnorrhinus 
  brevirostris, 
  Gyl., 
  is 
  a 
  species 
  found 
  

   on 
  the 
  Mediterranean 
  coast 
  on 
  Kelp 
  (Salsola) 
  and 
  on 
  Atriplex. 
  So 
  far 
  

   it 
  has 
  not 
  been 
  found 
  on 
  beetroot, 
  but 
  Chromoderus 
  fasciatus, 
  Miill., 
  

   (albidus, 
  F.), 
  which 
  is 
  common 
  on 
  Atriplex, 
  Chenopodiiim, 
  Salsola, 
  etc., 
  

   has 
  been 
  reported 
  as 
  a 
  beet 
  pest 
  in 
  Central 
  Europe. 
  Though 
  very 
  

   abundant 
  in 
  Herault, 
  the 
  author 
  has 
  not 
  observed 
  it 
  in 
  the 
  beet-fields 
  

   there. 
  As 
  regards 
  Cleonus 
  piger, 
  Scop, 
  {sulciwstris, 
  L.) 
  most 
  writers 
  

   notice 
  it 
  as 
  a 
  beet 
  pest, 
  but 
  one 
  of 
  little 
  importance. 
  Indeed 
  the 
  

   author 
  believes 
  it 
  not 
  to 
  be 
  such. 
  Temnorrhinus 
  has 
  few 
  enemies 
  ; 
  no 
  

   Hymenopterous 
  parasite 
  is 
  known, 
  but 
  Sphegids 
  of 
  the 
  genus 
  Cerceris 
  

   prey 
  on 
  it, 
  though 
  not 
  to 
  any 
  great 
  extent. 
  In 
  pursuing 
  his 
  

   investigations 
  on 
  Cocobacilli 
  as 
  insect 
  parasites 
  the 
  author 
  found 
  one 
  

   of 
  these 
  bacteria 
  in 
  the 
  larvae 
  of 
  T. 
  mendicus, 
  which 
  he 
  provisionally 
  

   named 
  Bacillus 
  cleoni. 
  It 
  remains 
  to 
  be 
  seen 
  whether 
  it 
  differs 
  

   specifically 
  from 
  Bacillus 
  cajae 
  discovered 
  in 
  Arctia 
  caja 
  by 
  G. 
  R. 
  Blanc 
  

   and 
  the 
  author. 
  

  

  When 
  the 
  larvae 
  have 
  penetrated 
  into 
  the 
  root 
  the 
  damage 
  is 
  past 
  

   remedy. 
  The 
  adults 
  must 
  be 
  destroyed 
  when 
  feeding, 
  prior 
  to 
  

   oviposition. 
  Valery 
  Mayet 
  recommended 
  arsenicals, 
  and 
  especially 
  

   a 
  solution 
  of 
  5 
  oz. 
  sodium 
  arsenite 
  in 
  20 
  gals, 
  of 
  water, 
  to 
  which 
  2 
  lb. 
  

   of 
  flour 
  had 
  been 
  added 
  to 
  make 
  it 
  adhere. 
  The 
  ordinary 
  arsenate 
  of 
  

   lead 
  sprays 
  may 
  be 
  used 
  also. 
  Spraying 
  must 
  be 
  done 
  before 
  

   oviposition 
  takes 
  place, 
  and 
  beetroot 
  sprayed 
  in 
  April 
  can 
  be 
  fed 
  to 
  

   cattle 
  in 
  October 
  without 
  any 
  danger 
  whatever. 
  

  

  Lixus 
  scabricollis, 
  Boh., 
  is 
  practically 
  of 
  no 
  economic 
  importance. 
  

   It 
  is 
  parasitised 
  by 
  a 
  Braconid 
  of 
  a 
  species 
  as 
  yet 
  unknown, 
  but 
  which 
  

   the 
  author 
  will 
  describe 
  shortly. 
  L. 
  ascanii, 
  L., 
  and 
  L. 
  junci, 
  Dahl., 
  

   have 
  long 
  been 
  known 
  as 
  beet-feeders, 
  but 
  they 
  also 
  seem 
  of 
  little 
  

   importance. 
  They 
  are 
  sometimes 
  found 
  on 
  spinach. 
  

  

  Feytaud 
  (J.). 
  Les 
  H6m§robes 
  ou 
  Chrysopes 
  [Chrysopa.] 
  — 
  Bull. 
  Soc. 
  

   d^ 
  Etude 
  et 
  de 
  Vulgarisation 
  Zool. 
  Agric, 
  Bordeaux, 
  xii, 
  no. 
  5, 
  Oct. 
  

   1913, 
  pp. 
  138-148, 
  3 
  figs. 
  

  

  The 
  Chrysopa 
  most 
  common 
  in 
  France 
  are 
  C. 
  vulgaris, 
  Schn., 
  C. 
  perla, 
  

   L., 
  C. 
  septempunctata, 
  Wesm., 
  and 
  C. 
  aspersa, 
  Wesm. 
  C. 
  vulgaris, 
  

   which 
  may 
  be 
  taken 
  as 
  a 
  type, 
  is 
  pre-eminently 
  carnivorous. 
  Already 
  

   known 
  as 
  a 
  destroyer 
  of 
  Aphids, 
  the 
  perfect 
  insect 
  has 
  been 
  also 
  

   observed 
  killing 
  the 
  caterpillars 
  of 
  Polychrosis 
  botrana. 
  The 
  egg 
  is 
  

  

  