﻿-156- 
  

  

  •earth 
  within 
  which 
  it 
  changes 
  to 
  a 
  light-brown 
  pupa 
  with 
  a 
  tongue-sheath 
  

   like 
  the 
  handle 
  of 
  a 
  pitcher. 
  The 
  handsome 
  well-known 
  moth 
  from 
  

   this 
  pupa 
  is 
  commonly 
  called 
  the 
  white-lined 
  morning-sphinx. 
  It 
  is 
  one 
  

   of 
  the 
  twilight 
  species 
  which 
  when 
  flitting 
  about 
  flowers 
  in 
  the 
  dusk 
  is 
  

   ■most 
  likely 
  to 
  be 
  mistaken 
  for 
  a 
  hummingbird 
  by 
  those 
  ignorant 
  of 
  the 
  

  

  Fig. 
  S3. 
  Tlie 
  Purslane-sphinx, 
  Dcilcphila 
  liiieata, 
  adult. 
  (Lippincott 
  Co.) 
  

  

  liabits 
  of 
  that 
  species. 
  It 
  is 
  also 
  not 
  uncommon 
  at 
  the 
  electric 
  light. 
  

   This 
  sphinx-moth 
  is 
  two-brooded, 
  the 
  larva? 
  of 
  the 
  first 
  brood 
  being 
  

   most 
  abundant 
  in 
  July 
  and 
  August, 
  and 
  those 
  of 
  the 
  second 
  from 
  the 
  

   middle 
  of 
  September 
  through 
  October. 
  It 
  hibernates 
  in 
  the 
  pupa 
  stage. 
  

  

  The 
  Woolly 
  Bears 
  (Arciiidce). 
  

  

  The 
  Yellow 
  Bear 
  {Spilosotna 
  virginica 
  Fabr. 
  ). 
  

  

  The 
  Hedge 
  hog 
  Caterpillar 
  {^Pyrrharctia 
  Isabella 
  Abb.). 
  

  

  The 
  S^lt-Marsh 
  Caterpillar 
  {Leiicarctia 
  acrcca 
  Dru.). 
  

  

  The 
  larvae 
  of 
  these 
  three 
  related 
  species 
  are 
  one 
  and 
  a 
  half 
  to 
  one 
  

   and 
  three 
  fourths 
  inches 
  long, 
  and 
  thickly 
  coated 
  with 
  erect 
  hairs 
  — 
  from 
  

   which 
  fact 
  their 
  general 
  name 
  is 
  derived. 
  They 
  are 
  common 
  and 
  widely 
  

   distributed, 
  and 
  very 
  general 
  feeders, 
  devouring 
  leaves 
  of 
  garden 
  vege- 
  

   tables 
  (including 
  beets), 
  small 
  fruits, 
  vines, 
  and 
  young 
  trees. 
  The 
  yel- 
  

   low 
  bear 
  is 
  probably 
  the 
  commonest 
  and 
  the 
  salt-marsh 
  caterpillar 
  the 
  

   least 
  common 
  of 
  the 
  three 
  in 
  Illinois. 
  The 
  hedge-hog 
  caterpillar, 
  tawny 
  

   red 
  on 
  the 
  middle 
  half 
  or 
  two-thirds 
  of 
  the 
  body 
  and 
  black 
  at 
  each 
  end, 
  

   is 
  a 
  familiar 
  object 
  in 
  late 
  fall 
  and 
  early 
  spring, 
  often 
  noticed 
  as 
  it 
  hur- 
  

   ries 
  over 
  the 
  ground 
  in 
  search 
  of 
  hibernating 
  quarters, 
  for 
  it 
  passes 
  the 
  

   winter 
  in 
  the 
  larval 
  stage. 
  It 
  derives 
  its 
  popular 
  name 
  from 
  the 
  fact 
  

   that 
  it 
  rolls 
  itself 
  up 
  into 
  a 
  bristly 
  ball 
  when 
  frightened 
  or 
  disturbed. 
  In 
  

   the 
  other 
  two 
  species 
  the 
  coat 
  is 
  nearly 
  uniform 
  in 
  color 
  throughout, 
  but 
  

   differs 
  in 
  shade 
  from 
  very 
  light 
  to 
  very 
  dark. 
  The 
  head 
  of 
  the 
  yellow 
  

  

  