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  xxi 
  ) 
  

  

  Eeginald 
  E.V.Hanson, 
  B.A., 
  of 
  Tun 
  bridge 
  Wells, 
  Kent; 
  and 
  

   Mr. 
  R. 
  C. 
  Wroughton, 
  of 
  Poona, 
  India, 
  were 
  elected 
  Fellows 
  

   of 
  the 
  Society. 
  

  

  Exhibitions, 
  d-c. 
  

  

  Mr. 
  G. 
  F. 
  Scott-Elliot 
  exhibited 
  a 
  series 
  of 
  various 
  species 
  

   of 
  Diptera 
  collected 
  on 
  Rammculacece, 
  PapaveracecB, 
  and 
  Cruci- 
  

   fercB. 
  He 
  said 
  that 
  during 
  the 
  past 
  summer 
  he 
  had 
  studied 
  

   about 
  forty 
  species 
  of 
  plants 
  belonging 
  to 
  the 
  orders 
  named, 
  

   and 
  that 
  they 
  had 
  all 
  been 
  visited 
  by 
  insects 
  which 
  were 
  

   probably 
  necessary 
  for 
  nectariferous 
  flowers. 
  The 
  majority 
  

   of 
  the 
  Diptera 
  caught 
  were 
  not 
  confined 
  to 
  one 
  species 
  or 
  

   even 
  genus, 
  but 
  in 
  view 
  of 
  the 
  unmodified 
  character 
  of 
  the 
  

   flower 
  in 
  the 
  orders 
  named 
  this 
  was 
  only 
  to 
  be 
  expected. 
  

   This, 
  however, 
  does 
  not 
  apply 
  to 
  Fumaria, 
  to 
  whose 
  scanty 
  

   list 
  of 
  clients 
  Pieris 
  must 
  be 
  added, 
  nor 
  to 
  Corydalis, 
  of 
  which 
  

   the 
  species 
  claviculata 
  and 
  lutea 
  are 
  abundantly 
  visited 
  by 
  

   humble-bees. 
  The 
  low 
  character 
  of 
  these 
  orders 
  explains 
  also 
  

   the 
  absence 
  of 
  any 
  specially 
  interesting 
  adaptations 
  ; 
  a 
  twisting 
  

   outwards 
  of 
  the 
  filaments 
  in 
  some 
  of 
  the 
  CrucifercB, 
  however, 
  

   has 
  the 
  effect 
  of 
  surrounding 
  the 
  honey-canal 
  by 
  three 
  

   dehiscing 
  anthers, 
  and 
  in 
  Crambe 
  this 
  has 
  resulted 
  in 
  a 
  

   grooving 
  of 
  the 
  filament 
  and 
  formation 
  of 
  a 
  peculiar 
  hook 
  

   adapted 
  to 
  this 
  end. 
  Mr. 
  Verrall 
  observed 
  that 
  certain 
  

   insects 
  affected 
  certain 
  plants, 
  but 
  that 
  the 
  Geraniacece 
  were 
  

   seldom 
  visited 
  except 
  by 
  EmpidcB. 
  The 
  discussion 
  was 
  con- 
  

   tinned 
  by 
  Mr, 
  M'Lachlan, 
  Mr. 
  Kirby, 
  and 
  others. 
  

  

  Mr. 
  W. 
  L. 
  Distant 
  exhibited 
  a 
  specimen 
  of 
  the 
  orthopterous 
  

   insect 
  Hemisaga 
  hastata, 
  de 
  Sauss, 
  which, 
  in 
  the 
  Transvaal, 
  

   he 
  observed 
  to 
  attack 
  and 
  feed 
  on 
  Danais 
  chrysippus, 
  a 
  butter- 
  

   fly 
  well 
  known 
  from 
  its 
  protective 
  character 
  and 
  distasteful 
  

   qualities 
  to 
  have 
  a 
  complete 
  immunity 
  from 
  the 
  usual 
  

   lepidopteral 
  enemies. 
  The 
  Hendscuja 
  lurked 
  amongst 
  the 
  

   tops 
  of 
  tall 
  flowering 
  grasses, 
  being 
  consequently 
  disguised 
  

   by 
  its 
  i^rotective 
  resemblance 
  to 
  the 
  same, 
  and 
  seized 
  the 
  

   Danais 
  as 
  it 
  settled 
  on 
  the 
  bloom. 
  From 
  close 
  watching 
  and 
  

   observation 
  Mr. 
  Distant 
  could 
  discover 
  no 
  other 
  danger 
  to 
  

   the 
  life 
  of 
  this 
  well-known 
  and 
  highly 
  protected 
  butterfly. 
  

  

  