﻿14 
  

  

  like 
  that 
  made 
  in 
  tlie 
  street 
  paving 
  for 
  a 
  coal-plate. 
  In 
  this 
  I 
  place 
  a 
  basin 
  holding 
  

   a 
  little 
  water 
  (beer 
  would 
  perha]'s 
  be 
  better), 
  and 
  into 
  this 
  the 
  creatures 
  foil 
  by 
  whole- 
  

   sale 
  until 
  they 
  are 
  nearly 
  exterminated. 
  During 
  the 
  day 
  an 
  iron 
  plate 
  covers 
  the 
  hole. 
  

  

  " 
  I 
  am, 
  Sir, 
  

  

  " 
  Your 
  obedient 
  Servant, 
  

   " 
  J. 
  O. 
  Westwood, 
  Esq." 
  " 
  Alfred 
  Aingek." 
  

  

  Mr. 
  Douglas 
  read 
  the 
  following 
  note, 
  translated 
  and 
  condensed 
  from 
  the 
  ' 
  Ento- 
  

   mologische 
  Zeilung' 
  for 
  April 
  : 
  — 
  

  

  " 
  On 
  Lithosia 
  depressa 
  and 
  L. 
  helveola 
  ; 
  by 
  Herr 
  Schreiner, 
  Weimar. 
  

  

  " 
  If 
  we 
  compare 
  these 
  two 
  insects, 
  and 
  read 
  the 
  descriptions 
  of 
  the 
  larvae 
  by 
  

   Treitschke 
  (Band 
  x. 
  pp. 
  164-5), 
  we 
  should 
  feel 
  quite 
  convinced 
  that 
  they 
  were 
  dis- 
  

   tinct 
  species 
  ; 
  but 
  by 
  observing 
  them 
  in 
  nature, 
  both 
  in 
  the 
  larva 
  and 
  perfect 
  states, 
  

   we 
  may 
  be 
  quite 
  certain 
  that 
  depressa 
  is 
  by 
  no 
  means 
  distinct, 
  but 
  only 
  the 
  female 
  of 
  

   helveola. 
  

  

  " 
  I 
  would 
  not 
  lay 
  much 
  stress 
  upon 
  the 
  fact 
  that 
  during 
  many 
  years' 
  experience 
  of 
  

   myself 
  and 
  others 
  in 
  this 
  and 
  other 
  localities, 
  not 
  one 
  male 
  of 
  depressa 
  has 
  occurred, 
  

   and 
  just 
  as 
  little 
  a 
  female 
  of 
  helveola, 
  although 
  this 
  is 
  curious 
  enough 
  ; 
  but 
  I 
  would 
  

   further 
  mention 
  that 
  although 
  I 
  yearly 
  rear 
  a 
  great 
  many 
  of 
  both 
  kinds 
  from 
  larvae, 
  

   which 
  are 
  not 
  scarce 
  in 
  this 
  neighbourhood, 
  mingled 
  together 
  among 
  the 
  lichens 
  upon 
  

   the 
  common 
  pine 
  {Pinus 
  picea), 
  the 
  result 
  is 
  the 
  same. 
  I 
  believe, 
  therefore, 
  that 
  I 
  

   am 
  correct 
  in 
  putting 
  depressa, 
  hitherto 
  accounted 
  to 
  be 
  a 
  distinct 
  species, 
  as 
  the 
  fe- 
  

   male 
  of 
  helveola 
  ; 
  and 
  the 
  following 
  considerations 
  bear 
  out 
  my 
  view: 
  — 
  

  

  " 
  1. 
  The 
  antennae 
  of 
  helveola 
  are 
  distinctly 
  ciliated, 
  in 
  depressa, 
  on 
  the 
  contrary, 
  

   they 
  are 
  setiform, 
  and 
  only 
  when 
  greatly 
  magnified 
  can 
  a 
  few 
  very 
  fine 
  hairs 
  be 
  

   observed. 
  

  

  " 
  2. 
  The 
  larvEe 
  appear 
  at 
  the 
  same 
  time 
  and 
  on 
  the 
  same 
  food, 
  and 
  mostly 
  together. 
  

  

  " 
  3. 
  They 
  show 
  no 
  striking 
  difference 
  in 
  form, 
  colour, 
  or 
  marking, 
  in 
  these 
  respects 
  

   not 
  varying 
  more 
  than 
  the 
  caterpillars 
  of 
  most 
  other 
  species. 
  

  

  " 
  4. 
  The 
  habit 
  and 
  pupation 
  are 
  the 
  same. 
  

  

  " 
  5. 
  The 
  period 
  of 
  development 
  is 
  exactly 
  alike. 
  

  

  " 
  I 
  must 
  further 
  remark 
  that 
  I 
  indeed 
  have 
  not 
  yet 
  witnessed 
  the 
  coupling, 
  because 
  

   it 
  would 
  seem 
  to 
  be 
  very 
  brief, 
  and 
  only 
  to 
  take 
  place 
  at 
  night 
  : 
  however, 
  I 
  have 
  often 
  

   obtained 
  the 
  eggs 
  of 
  depressa, 
  but 
  never 
  those 
  of 
  helveola. 
  Also, 
  on 
  opening 
  the 
  bo- 
  

   dies 
  of 
  a 
  number 
  of 
  helveola, 
  I 
  could 
  not 
  discover 
  a 
  trace 
  of 
  eggs, 
  whereas 
  the 
  bodies 
  

   of 
  depressa 
  generally 
  contained 
  a 
  great 
  quantity. 
  Unfortunately, 
  I 
  have 
  not 
  yet 
  been 
  

   able 
  to 
  rear 
  any 
  larvas 
  from 
  the 
  eggs. 
  

  

  " 
  It 
  is 
  inexplicable 
  to 
  me 
  how 
  these 
  prominent 
  circumstances 
  in 
  the 
  history 
  of 
  these 
  

   not 
  uncommon 
  insects 
  should 
  have 
  escaped 
  even 
  our 
  latest 
  and 
  best 
  authors 
  ; 
  and 
  I 
  

   feel 
  myself 
  so 
  much 
  the 
  more 
  compelled 
  to 
  incite 
  a 
  more 
  exact 
  examination 
  and 
  in- 
  

   quiry 
  into 
  this 
  and 
  the 
  other 
  species 
  of 
  Lithosia." 
  

  

  Mr. 
  Douglas 
  also 
  read 
  the 
  following 
  extract 
  from 
  Mr. 
  Fortune's 
  ' 
  Journey 
  to 
  the 
  

   Tea 
  Countries 
  of 
  China 
  : 
  ' 
  — 
  

  

  " 
  In 
  the 
  evening 
  we 
  stopped, 
  with 
  some 
  other 
  boats 
  like 
  our 
  own, 
  near 
  a 
  small 
  vil- 
  

   lage, 
  where 
  we 
  proposed 
  to 
  pass 
  the 
  night. 
  The 
  day 
  had 
  been 
  very 
  warm, 
  and 
  the 
  

  

  