﻿TENT 
  CATERPILLAR 
  SNODGRASS. 
  

  

  331 
  

  

  All 
  this 
  time 
  the 
  members 
  of 
  that 
  un- 
  

   fortunate 
  brood 
  we 
  noted 
  first 
  have 
  been 
  

   clinging 
  benumbed, 
  motionless, 
  and 
  help- 
  

   less 
  to 
  the 
  silk 
  network 
  on 
  the 
  covering 
  

   of 
  their 
  deserted 
  eggs. 
  The 
  cold 
  con- 
  

   tinues, 
  the 
  clouds 
  are 
  threatening, 
  and 
  

   during 
  the 
  afternoon 
  the 
  hapless 
  creatures 
  

   are 
  drenched 
  by 
  hard 
  and 
  chilling 
  rains. 
  

   Through 
  the 
  night 
  following 
  they 
  are 
  

   tossed 
  in 
  a 
  northwest 
  gale, 
  while 
  the 
  

   temperature 
  drops 
  below 
  freezing. 
  The 
  

   next 
  day 
  the 
  wind 
  continues, 
  and 
  frost 
  

   comes 
  again 
  at 
  night. 
  For 
  three 
  days 
  

   the 
  caterpillars 
  endure 
  the 
  hostility 
  of 
  the 
  

   elements, 
  without 
  food, 
  without 
  shelter. 
  

   But 
  already 
  the 
  buds 
  on 
  the 
  cherry 
  tree 
  

   are 
  sending 
  out 
  long 
  green 
  points, 
  and 
  when 
  

   the 
  temperature 
  moderates 
  on 
  the 
  fourth 
  day 
  

   and 
  the 
  sun 
  shines 
  again 
  for 
  a 
  brief 
  period 
  the 
  

   revived 
  outcasts 
  are 
  able 
  to 
  find 
  a 
  few 
  fresh 
  

   tips 
  on 
  which 
  to 
  nibble. 
  In 
  another 
  day 
  the 
  

   young 
  leaves 
  are 
  unfolding, 
  offering 
  an 
  abun- 
  

   dance 
  of 
  tender 
  forage, 
  and 
  the 
  season 
  of 
  ad- 
  

   versity 
  for 
  these 
  infant 
  caterpillars 
  is 
  over. 
  

   This 
  family 
  lived 
  in 
  Kock 
  Creek 
  Park, 
  near 
  

   Washington, 
  D. 
  C, 
  in 
  1919, 
  where 
  it 
  was 
  

   hatched 
  the 
  25th 
  of 
  March. 
  

  

  The 
  newly 
  hatched 
  caterpillars 
  are 
  about 
  

   one-tenth 
  of 
  an 
  inch 
  in 
  length. 
  The 
  body 
  is 
  

   widest 
  through 
  the 
  first 
  segment 
  and 
  tapers 
  

   somewhat 
  towards 
  the 
  other 
  end. 
  The 
  general 
  

   color 
  is 
  blackish, 
  but 
  there 
  is 
  a 
  pale 
  gray 
  collar 
  

   on 
  the 
  first 
  segment 
  back 
  of 
  the 
  head 
  and 
  a 
  

  

  Fig. 
  2. 
  — 
  Eggs 
  and 
  young 
  

   caterpillars. 
  A, 
  Egg 
  

   masses 
  on 
  twigs 
  (nat- 
  

   ural 
  size) 
  ; 
  B, 
  eggs 
  

   exposed 
  beneath 
  the 
  

   covering 
  ; 
  C, 
  several 
  

   eggs 
  more 
  enlarged, 
  

   three 
  with 
  holes 
  in 
  

   tops 
  from 
  which 
  cat- 
  

   erpillars 
  emerged; 
  D. 
  

   newly 
  hatched 
  cater- 
  

   pillars 
  (enlarged 
  10 
  

   times) 
  . 
  

  

  