﻿Ixviii 
  

  

  of 
  heat 
  in 
  enlarging 
  or 
  even 
  producing 
  tlie 
  small 
  white 
  dis- 
  

   coidal 
  spot. 
  The 
  spot 
  is 
  as 
  a 
  rule 
  very 
  minute 
  or 
  absent 
  in 
  

   British 
  specimens 
  under 
  normal 
  conditions. 
  A 
  series 
  of 
  bred 
  

   specimens 
  from 
  Byfleet 
  was 
  shown 
  which 
  had 
  been 
  reared 
  

   normally, 
  and 
  a 
  smaller 
  series 
  from 
  the 
  same 
  place, 
  but 
  bred 
  

   another 
  year, 
  which 
  had 
  been 
  subjected 
  to 
  considerable 
  sun- 
  

   heat 
  in 
  a 
  greenhouse, 
  but 
  with 
  no 
  artificial 
  heat. 
  These 
  latter 
  

   showed 
  a 
  small 
  white 
  disco 
  idal 
  spot 
  in 
  all 
  the 
  specimens, 
  one 
  of 
  

   which 
  showed 
  it 
  quite 
  large 
  and 
  distinct, 
  while 
  another 
  was 
  

   only 
  a 
  little 
  less 
  distinct. 
  These 
  two 
  were 
  out 
  of 
  but 
  seven 
  

   examples 
  thus 
  reared. 
  A 
  small 
  series 
  of 
  specimens 
  from 
  Ger- 
  

   many 
  and 
  Greece 
  scarcely 
  showed 
  the 
  spot 
  more 
  than 
  ordinary 
  

   British 
  specimens. 
  A 
  small 
  series 
  from 
  Yokohama, 
  Japan, 
  

   of 
  the 
  race 
  lewisi, 
  showed 
  the 
  spot 
  distinctly 
  in 
  at 
  least 
  two 
  

   cases 
  and 
  slightly 
  in 
  all 
  ; 
  while 
  three 
  specimens 
  from 
  N. 
  India 
  

   of 
  the 
  race 
  macromera 
  showed 
  the 
  usual 
  well-marked 
  spot 
  as 
  

   well 
  as 
  the 
  characteristics 
  of 
  this 
  race. 
  It 
  appeared 
  possible 
  

   that 
  the 
  stimulus 
  of 
  strong 
  sun-heat 
  tended 
  to 
  develop 
  this 
  

   discoidal 
  dot, 
  for 
  the 
  Indian 
  examples 
  probably 
  experience 
  

   most 
  heat, 
  while 
  Japanese 
  examples 
  would 
  most 
  likely 
  have 
  

   less 
  than 
  the 
  Indian, 
  but 
  more 
  than 
  our 
  own. 
  . 
  

  

  A 
  Thomisid 
  Spider 
  apparently 
  protected 
  from 
  the 
  

   ATTACK 
  OF 
  AN 
  Attid 
  Spider. 
  — 
  Prof. 
  PouLTON 
  said 
  that 
  on 
  

   September 
  9th, 
  1919, 
  at 
  St. 
  Helens, 
  Isle 
  of 
  Wight, 
  he 
  observed 
  

   a 
  Thomisid 
  spider 
  slowly 
  walking 
  up 
  a 
  lamp-post 
  followed 
  by 
  

   an 
  Attid, 
  probably 
  the 
  common 
  Epiblemum 
  scenicum, 
  CI. 
  

   When 
  he 
  first 
  saw 
  them 
  the 
  Attid 
  was 
  about 
  an 
  inch 
  behind 
  

   but 
  it 
  soon 
  overtook 
  the 
  other 
  and 
  leapt 
  upon 
  it, 
  and 
  then, 
  

   as 
  quickly, 
  jumped 
  off 
  again 
  and 
  walked 
  away. 
  It 
  seemed 
  

   probable 
  that 
  the 
  Attid 
  had 
  instantly 
  recognised 
  some 
  effective 
  

   powers 
  of 
  defence 
  or 
  some 
  unpleasant 
  or 
  unpalatable 
  quality 
  

   in 
  the 
  Thomisid. 
  The 
  observations 
  of 
  Dr. 
  and 
  Mrs. 
  Peckham 
  

   on 
  the 
  elaborate 
  courtship 
  of 
  the 
  Attidae 
  and 
  immense 
  risks 
  

   run 
  by 
  the 
  male 
  rendered 
  it 
  improbable 
  that 
  the 
  behaviour 
  was 
  

   due 
  to 
  a 
  mistaken 
  sexual 
  impulse. 
  

  

  A 
  Queen 
  Wasp 
  capturing 
  prey 
  before 
  hibernation. 
  — 
  

   Prof. 
  PouLTON 
  said 
  that 
  on 
  September 
  20th 
  last, 
  at 
  Oxford, 
  

   he 
  saw 
  a 
  large 
  wasp 
  carrying 
  a 
  burden 
  and 
  flying 
  very 
  heavily. 
  

   It 
  came 
  down 
  in 
  the 
  middle 
  of 
  the 
  Banbury 
  Road 
  and 
  he 
  was 
  

  

  