﻿l86 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  incisures 
  characteristic 
  of 
  the 
  adult 
  form. 
  On 
  the 
  6th 
  a 
  larva 
  took 
  

   position 
  for 
  its 
  molt, 
  on 
  the 
  yth 
  two 
  others, 
  and 
  ten 
  on 
  the 
  8th. 
  At 
  this 
  

   time 
  they 
  measure 
  0.9 
  inch 
  in 
  length. 
  

  

  November 
  8th. 
  Fifth 
  molt 
  commenced 
  — 
  one 
  larva 
  molted; 
  ten 
  more 
  

   were 
  found 
  to 
  have 
  molted 
  on 
  the 
  morning 
  of 
  the 
  loth; 
  the 
  last 
  molted 
  

   on 
  the 
  15th 
  — 
  the 
  molting 
  of 
  this 
  stage 
  extending 
  over 
  seven 
  days. 
  At 
  

   the 
  end 
  of 
  this 
  stage 
  they 
  average 
  in 
  length 
  1.6 
  in. 
  at 
  rest 
  and 
  2 
  in. 
  when 
  

   in 
  motion. 
  All 
  the 
  spines 
  are 
  black, 
  except 
  some 
  lateral 
  ones 
  iii 
  a 
  few- 
  

   individuals, 
  which 
  are 
  brownish 
  ; 
  they 
  are 
  minutely 
  barbed 
  to 
  the 
  naked 
  

   eye 
  and 
  distincdy 
  so 
  under 
  a 
  magnifier 
  (PI. 
  iv, 
  fig. 
  i). 
  The 
  segments 
  are 
  

   black 
  dorsally, 
  except 
  the 
  thoracic 
  and 
  the 
  last 
  two 
  which 
  are 
  a 
  reddish- 
  

   brown, 
  as 
  are 
  the 
  sides 
  below 
  the 
  spiracles. 
  The 
  red 
  incisural 
  bands 
  

   commence 
  behind 
  the 
  4th 
  segment 
  and 
  continue 
  until 
  after 
  the 
  loth, 
  

   being 
  seven 
  in 
  number; 
  the 
  central 
  ones 
  being 
  about 
  one-third 
  as 
  long 
  

   as 
  the 
  black 
  portion 
  of 
  the 
  segment. 
  

  

  November 
  17. 
  Sixth 
  molt 
  commenced 
  — 
  all 
  the 
  larvae 
  remaining 
  upon 
  

   the 
  leaves. 
  The 
  molting 
  terminated 
  on 
  the 
  23d 
  — 
  continuing 
  six 
  days. 
  

   In 
  every 
  instance 
  in 
  this 
  molt, 
  the 
  head-case 
  remained 
  attached 
  to 
  the 
  

   skin. 
  The 
  exuvia 
  shows 
  distinctly 
  a 
  central 
  lateral 
  patch 
  of 
  dusky 
  scales. 
  

   Fewer 
  of 
  the 
  exuviae 
  were 
  eaten 
  (26 
  per 
  cent 
  only), 
  owing 
  doubtless 
  to 
  

   the 
  stronger 
  and 
  more 
  rigid 
  spines. 
  All 
  the 
  spines 
  are 
  black 
  and 
  all 
  the 
  

   segments 
  are 
  black 
  dorsally.* 
  

  

  November 
  25. 
  Seventh 
  molt 
  commenced 
  — 
  terminated 
  on 
  December 
  

   4th, 
  — 
  continuing 
  nine 
  days. 
  Length 
  2.4 
  inches, 
  at 
  rest; 
  when 
  extended 
  

   in 
  feeding, 
  3 
  inches. 
  

  

  December 
  i. 
  A 
  caterpillar 
  commenced 
  spinning 
  its 
  cocoon 
  on 
  the 
  

   side 
  of 
  its 
  feeding 
  cage 
  and 
  the 
  glass 
  cover; 
  for 
  convenience 
  it 
  was 
  trans- 
  

   ferred 
  to 
  another 
  box. 
  On 
  the 
  3d 
  inst. 
  a 
  second 
  one 
  had 
  commenced. 
  

  

  December 
  13. 
  The 
  first 
  pupa 
  was 
  observed, 
  from 
  the 
  caterpillar 
  that 
  

   had 
  commenced 
  to 
  spin 
  up 
  December 
  rst. 
  Two 
  more 
  molted 
  on 
  Decem- 
  

   ber 
  14th. 
  On 
  the 
  30th, 
  the 
  last 
  larva 
  was 
  transferred 
  to 
  a 
  box 
  for 
  

   pupation. 
  

  

  * 
  If 
  the 
  preceding 
  notes 
  are 
  compared 
  with 
  Dr. 
  Dyar's 
  description 
  of 
  the 
  early 
  stages 
  of 
  ihis 
  

   insect 
  (see 
  Canadian 
  Entomologist, 
  xxiii, 
  1891, 
  pp. 
  106-107), 
  sonae 
  differences 
  will 
  be 
  detected. 
  

   Most 
  of 
  these 
  can 
  undoubtedly 
  be 
  accounted 
  for 
  by 
  the 
  natural 
  variations 
  of 
  the 
  species 
  under 
  

   differing 
  conditions. 
  

  

  