﻿[77] 
  Notes 
  on 
  Notodonta 
  dictjsa. 
  189 
  

  

  ground, 
  when, 
  much 
  to 
  my 
  surprise, 
  notwithstanding 
  its 
  weak 
  

   condition, 
  it 
  speedily 
  buried 
  itself 
  beneath 
  the 
  surface 
  for 
  

   pupation. 
  

  

  The 
  moth 
  was 
  not 
  obtained 
  from 
  it. 
  

  

  On 
  Sept. 
  14, 
  1869, 
  a 
  second 
  larva 
  was 
  found 
  at 
  Bethlehem, 
  

   Albany 
  county, 
  feeding 
  on 
  the 
  aspen 
  (Populus 
  tremuloides), 
  

   in 
  an 
  earlier 
  stage 
  of 
  its 
  growth, 
  and 
  just 
  after 
  a 
  molting, 
  

   judging 
  from 
  the 
  comparative 
  size 
  of 
  its 
  head, 
  which 
  was 
  

   twice 
  the 
  breadth 
  of 
  its 
  body. 
  Its 
  length 
  was 
  .56 
  inch, 
  and 
  

   diameter 
  .05 
  inch. 
  

  

  It 
  was 
  fed 
  on 
  aspen 
  leaves, 
  and 
  on 
  the 
  19th 
  it 
  again 
  molted. 
  

   The 
  following 
  day 
  it 
  resumed 
  its 
  feeding, 
  and 
  the 
  day 
  there- 
  

   after 
  its 
  dimensions 
  were, 
  length 
  — 
  , 
  diameter 
  .08 
  inch, 
  diam- 
  

   eter 
  of 
  head 
  .12 
  inch. 
  It 
  was 
  of 
  a 
  yellow-brown 
  color 
  dors- 
  

   ally, 
  with 
  transverse 
  slate 
  colored 
  markings 
  centrally 
  on 
  the 
  

   segments. 
  (No 
  further 
  record 
  of 
  the 
  larva 
  : 
  it 
  probably 
  died 
  

   before 
  its 
  maturity). 
  

  

  On 
  Sept. 
  5, 
  1872, 
  another 
  larva, 
  1.65 
  inch 
  long, 
  was 
  taken 
  

   on 
  poplar. 
  Body 
  greenish- 
  white 
  dor 
  sally, 
  shading 
  on 
  the 
  side 
  

   into 
  green 
  ; 
  substigmatal 
  stripe 
  bright 
  yellow, 
  interrupted 
  

   below 
  the 
  stigmata 
  by 
  the 
  extension 
  of 
  the 
  oval 
  white 
  spot 
  

   encircling 
  the 
  stigma. 
  Caudal 
  horn 
  black. 
  Caudal 
  shield 
  

   broadly 
  crescentic, 
  granulated, 
  with 
  a 
  glassy 
  tubercle 
  cen- 
  

   trally 
  and 
  margined 
  with 
  brownish-red. 
  Legs 
  and 
  prolegs 
  

   having 
  the 
  portions 
  of 
  the 
  body 
  above 
  them 
  of 
  a 
  violet 
  color 
  

   — 
  the 
  prolegs 
  with 
  an 
  acutely 
  elliptical 
  ferruginous 
  spot 
  upon 
  

   them 
  outwardly, 
  .crossed 
  on 
  their 
  anterior 
  part 
  by 
  a 
  quadri- 
  

   lateral 
  black 
  spot. 
  

  

  Sept. 
  14, 
  187-, 
  larva 
  feeding 
  on 
  Populus 
  tremuloides, 
  at 
  

   Bethlehem. 
  Length 
  at 
  rest, 
  1.3 
  inch 
  ; 
  diameter 
  .18 
  inch 
  ; 
  the 
  

   head 
  and 
  first 
  pair 
  of 
  legs 
  extended 
  in 
  line 
  with 
  the 
  body. 
  

   Head 
  of 
  the 
  diameter 
  of 
  the 
  thoracic 
  segments, 
  subquadran- 
  

   gular, 
  deeply 
  impressed 
  medially, 
  smooth, 
  of 
  a 
  bluish-gray 
  

   color, 
  showing 
  reticulations 
  under 
  a 
  magnifier 
  ; 
  man- 
  

   dibles 
  and 
  a 
  crescentiform 
  spot 
  bearing 
  the 
  eyes 
  dull 
  

   yellow. 
  Body 
  with 
  a 
  marked 
  degree 
  of 
  transparency 
  in 
  its 
  

   lower 
  portion, 
  shining, 
  without 
  the 
  usual 
  annulations 
  of 
  the 
  

   segments, 
  nearly 
  cylindrical 
  to 
  the 
  tenth 
  segment, 
  the 
  elev- 
  

   enth 
  broad, 
  elevated 
  in 
  a 
  prominent 
  cone 
  ; 
  the 
  thoracic 
  seg- 
  

   ments 
  contracted 
  when 
  at 
  rest, 
  forming 
  each 
  three 
  distinct 
  

   wrinkles, 
  making 
  these 
  segments 
  broader 
  than 
  the 
  succeeding 
  

   ones 
  ; 
  incisures 
  deep 
  ; 
  color 
  bluish-gray, 
  a 
  yellow 
  ventral 
  line, 
  

  

  