﻿( 
  XV 
  ) 
  

  

  Junes, 
  1891. 
  

  

  Frederick 
  DuCane 
  Godman, 
  Esq., 
  M.A., 
  F.E.S., 
  President, 
  

   in 
  the 
  chair. 
  

  

  Donations 
  to 
  the 
  Library 
  were 
  announced 
  and 
  thanks 
  

   voted 
  to 
  the 
  respective 
  donors. 
  

  

  Election 
  of 
  Fellows. 
  

   Mr. 
  J, 
  M. 
  Adye, 
  of 
  Somerford 
  Grange, 
  Christchurch, 
  

   Hants 
  ; 
  and 
  the 
  Eev. 
  John 
  Seymour 
  St. 
  John, 
  B.A., 
  of 
  42, 
  

   Castlewood 
  Eoad, 
  Stamford 
  Hill, 
  N., 
  were 
  elected 
  Fellows 
  

   of 
  the 
  Society. 
  

  

  Kxliihitions, 
  dc. 
  

  

  Mr. 
  E. 
  B. 
  Poulton 
  exhibited 
  the 
  young 
  larvae 
  of 
  Enclromis 
  

   versicolora 
  in 
  the 
  second 
  stage. 
  At 
  this 
  period 
  the 
  larvfe 
  arrange 
  

   themselves 
  in 
  small 
  groups 
  upon 
  the 
  leaves 
  and 
  leaf-stalks 
  

   of 
  the 
  birch, 
  and 
  when 
  disturbed 
  they 
  raise 
  the 
  anterior 
  part, 
  

   bending 
  the 
  head 
  over 
  the 
  dorsal 
  surface 
  of 
  the 
  posterior 
  part 
  

   of 
  the 
  body. 
  In 
  this 
  attitude 
  they 
  strongly 
  remind 
  the 
  

   observer 
  of 
  those 
  Tenthredo 
  larv«, 
  which, 
  when 
  irritated, 
  

   bend 
  the 
  tail 
  forwards 
  over 
  the 
  anterior 
  part 
  of 
  the 
  body. 
  

   The 
  fact 
  that 
  the 
  head 
  is 
  raised 
  in 
  the 
  one, 
  and 
  the 
  tail 
  in 
  the 
  

   other, 
  does 
  not 
  cause 
  any 
  conspicuous 
  difference 
  when 
  the 
  

   larvEB 
  are 
  seen 
  from 
  a 
  little 
  distance. 
  The 
  common 
  Tenthredo 
  

   larva, 
  Crcesus 
  septentrionalis, 
  is 
  about 
  the 
  same 
  size 
  as 
  these 
  

   small 
  Lepidopterous 
  larv», 
  feeds 
  in 
  similar 
  small 
  groups 
  when 
  

   large 
  (when 
  small 
  the 
  groups 
  contain 
  far 
  more 
  individuals), 
  

   and 
  also 
  often 
  frequents 
  the 
  birch. 
  Experiments 
  have 
  shown 
  

   that 
  Tenthredo 
  larvae 
  are, 
  as 
  a 
  whole, 
  far 
  more 
  unpalatable 
  

   than 
  Lepidopterous 
  larva, 
  so 
  that 
  the 
  resemblance 
  would 
  be 
  

   of 
  advantage 
  to 
  the 
  Endromis 
  larvae. 
  

  

  Mr. 
  Poulton 
  also 
  showed 
  the 
  cocoons 
  of 
  Eriogaster 
  lanestris. 
  

   These 
  cocoons 
  are 
  generally 
  believed 
  to 
  be 
  formed 
  of 
  silk 
  so 
  

   tightly 
  woven 
  as 
  to 
  produce 
  the 
  compact 
  egg-shell 
  like 
  

   structure 
  which 
  gives 
  the 
  common 
  name 
  of 
  *' 
  Egger 
  " 
  to 
  the 
  

   moth. 
  Mr. 
  Poulton 
  had 
  found, 
  with 
  the 
  help 
  of 
  Professor 
  

   Meldola, 
  the 
  texture 
  is 
  due 
  to 
  the 
  fact 
  that 
  the 
  silken 
  walls 
  

   are 
  plastered 
  over 
  with 
  a 
  hardened 
  paste 
  of 
  calcium 
  oxalate. 
  

   The 
  silken 
  constituent 
  forms 
  but 
  a 
  small 
  part 
  of 
  the 
  whole 
  ; 
  

  

  PROC. 
  ENT. 
  SOC. 
  LOND., 
  HI., 
  1891. 
  D 
  

  

  