﻿Bajulavia. 
  This 
  covering 
  is, 
  however, 
  very 
  difl'erent 
  from 
  the 
  cases 
  of 
  the 
  Psychidae. 
  

   The 
  larvffi 
  enlarge 
  these 
  coverings 
  according 
  to 
  their 
  requirements, 
  and 
  as 
  they 
  hyber- 
  

   nate 
  in 
  them 
  when 
  very 
  small, 
  it 
  is 
  not 
  easy 
  to 
  rear 
  them 
  from 
  that 
  state. 
  The 
  warmth 
  

   of 
  spring 
  entices 
  them 
  out 
  to 
  the 
  plant 
  on 
  which 
  they 
  feed— 
  the 
  milfoil 
  {Achillea 
  Mil- 
  

   lefolium) 
  ; 
  when 
  reared 
  in 
  confinement, 
  however, 
  they 
  will 
  feed 
  upon 
  Poterium 
  San- 
  

   guisorba. 
  The 
  head 
  of 
  the 
  larva 
  is 
  small, 
  and 
  the 
  fore 
  part 
  of 
  the 
  body 
  is 
  also 
  slender 
  ; 
  

   the 
  hinder 
  part 
  is 
  crossed 
  all 
  over 
  with 
  deep 
  wrinkles 
  and 
  corresponding 
  elevations. 
  

   Beyond 
  the 
  first 
  segment, 
  the 
  body 
  is 
  flattened 
  on 
  each 
  side; 
  on 
  the 
  back 
  stand 
  four 
  

   elevations 
  or 
  humps, 
  each 
  terminated 
  by 
  a 
  sickle-shaped 
  hair 
  ; 
  a 
  smaller 
  hump 
  stands 
  

   on 
  each 
  side 
  of 
  the 
  large 
  black 
  spiracle 
  : 
  these 
  six 
  humps, 
  each 
  on 
  a 
  distinct 
  segment, 
  

   are 
  separated 
  by 
  long 
  furrows, 
  the 
  remaining 
  space 
  is 
  covered 
  with 
  innumerable 
  little 
  

   warts, 
  which 
  make 
  the 
  larva 
  feel 
  rough 
  to 
  the 
  touch 
  ; 
  viewed 
  with 
  a 
  lens, 
  these 
  look 
  

   like 
  the 
  deep-cleft 
  bark 
  of 
  oak 
  trees. 
  All 
  the 
  remaining 
  segments 
  are 
  covered 
  with 
  

   these 
  elevations, 
  points, 
  humps 
  and 
  furrows, 
  to 
  which, 
  as 
  may 
  very 
  easily 
  be 
  observed, 
  the 
  

   little 
  bits 
  of 
  plants 
  are 
  fastened 
  in 
  layers 
  of 
  small 
  bundles. 
  The 
  larva 
  is 
  earth-brown, 
  

   a 
  long 
  darker 
  line 
  is 
  on 
  the 
  middle 
  of 
  the 
  back, 
  and 
  three, 
  more 
  or 
  less 
  clear, 
  long 
  

   streaks 
  on 
  each 
  side. 
  It 
  attains 
  eventually 
  the 
  length 
  of 
  a 
  Paris 
  inch, 
  but 
  sits 
  always 
  

   in 
  a 
  contracted 
  position, 
  and 
  this, 
  added 
  to 
  the 
  unyielding 
  nature 
  of 
  its 
  case, 
  gives 
  it 
  

   a 
  most 
  deceptive 
  resemblance 
  to 
  a 
  hard 
  seed-capsule 
  or 
  a 
  little 
  mass 
  of 
  flowers. 
  

  

  " 
  When 
  about 
  to 
  go 
  into 
  the 
  pupa 
  state, 
  it 
  seeks 
  a 
  hard 
  flower-stalk, 
  on 
  the 
  top 
  of 
  

   which, 
  or 
  sometimes 
  only 
  high 
  up 
  thereon, 
  it 
  makes 
  fast 
  fragments 
  of 
  flowers 
  in 
  the 
  

   form 
  of 
  an 
  open-work 
  case, 
  in 
  which, 
  in 
  about 
  a 
  day, 
  it 
  changes 
  to 
  a 
  pupa, 
  and 
  within 
  

   three 
  (seldom 
  four) 
  weeks, 
  it 
  appears 
  in 
  the 
  perfect 
  state. 
  

  

  " 
  Light 
  places 
  in 
  woods, 
  plains, 
  and 
  dry 
  ditches 
  in 
  woods, 
  where 
  the 
  plants 
  grow 
  

   on 
  which 
  they 
  feed, 
  are 
  the 
  favourite 
  localities 
  of 
  these 
  caterpillars. 
  When 
  once 
  one 
  

   is 
  discovered, 
  several 
  more 
  may 
  certainly 
  be 
  found 
  in 
  that 
  neighbourhood. 
  The 
  best 
  

   season 
  to 
  seek 
  them 
  is 
  from 
  the 
  beginning 
  to 
  the 
  middle 
  of 
  June, 
  when 
  they 
  have 
  be- 
  

   come 
  full 
  fed, 
  and 
  are 
  approaching 
  their 
  transformation. 
  For 
  this 
  purpose 
  it 
  is 
  not 
  

   necessary 
  to 
  use 
  much 
  apparatus, 
  for 
  if 
  care 
  be 
  not 
  taken, 
  they 
  are 
  very 
  easily 
  deprived 
  

   of 
  their 
  artistic 
  coverings.'' 
  

  

  April 
  5, 
  1852. 
  

  

  J. 
  0. 
  Westwood, 
  Esq., 
  President, 
  in 
  the 
  chair. 
  

  

  The 
  following 
  donations 
  were 
  announced, 
  and 
  thanks 
  ordered 
  to 
  be 
  given 
  to 
  the 
  

   donors: 
  — 
  ' 
  The 
  Zoologist 
  ' 
  for 
  April 
  ; 
  by 
  the 
  Editor. 
  ' 
  The 
  Athena;ura' 
  for 
  Febru- 
  

   ary 
  and 
  March 
  ; 
  by 
  the 
  Editor. 
  ' 
  The 
  Literary 
  Gazette 
  ' 
  for 
  March 
  ; 
  by 
  the 
  Publish- 
  

   ers. 
  ' 
  Entomologische 
  Zeitung 
  ' 
  for 
  February 
  and 
  March, 
  and 
  ' 
  Linnrea 
  Entomolo- 
  

   gica,' 
  Scchster 
  Band 
  ; 
  by 
  the 
  Entomological 
  Society 
  of 
  Stettin. 
  ' 
  Revue 
  ct 
  Magasin 
  

   de 
  Zoologie,' 
  1851, 
  Nos. 
  11 
  and 
  12, 
  1852, 
  Nos. 
  1 
  and 
  2; 
  by 
  M. 
  Guerin 
  Monevillc. 
  

   ' 
  Descrizione 
  di 
  alcune 
  specie 
  d'lnsetli 
  Fossili,' 
  and 
  ' 
  Catalogo 
  dei 
  Crostacei 
  Italiani 
  

   e 
  di 
  molti 
  altri 
  del 
  Mediterraneo 
  : 
  ' 
  both 
  by 
  the 
  Rev. 
  F. 
  W. 
  Hope, 
  and 
  presented 
  by 
  

   the 
  Author. 
  ' 
  Nature's 
  Teaching,' 
  a 
  Lecture 
  read 
  at 
  the 
  Annual 
  Meeting 
  of 
  the 
  Wor- 
  

   cestershire 
  Natural 
  History 
  Society, 
  October 
  8, 
  1851 
  ; 
  by 
  the 
  Rev. 
  D. 
  Melville: 
  pre- 
  

  

  