﻿3b» 
  PROCEEDINGS 
  OF 
  THE 
  CALIFORNIA 
  

  

  The 
  mature 
  form 
  of 
  the 
  larva 
  is 
  noticed 
  in 
  Stretch's 
  '• 
  ZygoenidEe 
  and 
  Bom- 
  

   bj'cidse 
  of 
  North 
  America," 
  but 
  I 
  subjoin 
  the 
  description 
  of 
  one 
  of 
  the 
  many 
  

   varieties 
  to 
  which 
  it 
  is 
  subject, 
  believing 
  that 
  all 
  information 
  with 
  reference 
  to 
  

   this 
  species 
  (the 
  position 
  of 
  which 
  in 
  classification 
  has 
  not 
  yet 
  been 
  settled 
  by 
  

   entomologists) 
  will 
  prove 
  to 
  be 
  of 
  value 
  : 
  

  

  Yellowish-white, 
  shining, 
  head 
  large, 
  round, 
  stone 
  color, 
  with 
  black 
  point 
  on 
  

   each 
  side 
  of 
  the 
  mouth, 
  a 
  median 
  stripe 
  of 
  reddish 
  brown, 
  and 
  a 
  narrow 
  one 
  

   of 
  same 
  color 
  on 
  each 
  side. 
  A 
  broad 
  black 
  stripe 
  extends 
  laterally 
  across 
  the 
  

   second 
  segment 
  at 
  base 
  of 
  the 
  head, 
  and 
  another 
  across 
  the 
  thirteenth 
  segment, 
  

   which 
  also 
  contains 
  a 
  broken 
  black 
  dorsal 
  line. 
  In 
  the 
  middle 
  of 
  the 
  black 
  

   lateral 
  stripes 
  is 
  a 
  waved 
  whitish 
  line, 
  enclosing 
  a 
  narrow 
  black 
  one. 
  At 
  the 
  

   base 
  of 
  the 
  abdominal 
  legs 
  is 
  a 
  waved 
  interrupted 
  yellow 
  line, 
  edged 
  narrowly 
  

   with 
  black. 
  

  

  Under 
  side 
  yellowish-white, 
  faintly 
  marked 
  with 
  broken 
  brown 
  waved 
  lines 
  ; 
  

   feet 
  pinkish, 
  striped 
  with 
  black 
  ; 
  abdominal 
  legs, 
  yellowish-white. 
  

  

  Fam. 
  BOMBYCID^E. 
  

  

  Clisiocntnpa 
  constricta. 
  Stretch, 
  n. 
  sp. 
  

  

  Head, 
  slate-gray, 
  with 
  black 
  spots; 
  mouth 
  parts, 
  black, 
  tipped 
  with 
  dull 
  

   yellow. 
  Body, 
  slate-gray, 
  covered 
  laterally 
  with 
  black 
  irrorations. 
  Along 
  the 
  

   middle 
  of 
  the 
  dorsal 
  region 
  is 
  an 
  irregular 
  black 
  stripe, 
  marked 
  on 
  its 
  sides 
  

   with 
  waved 
  orange 
  lines, 
  and 
  surmounted 
  at 
  the 
  union 
  of 
  the 
  segments 
  by 
  a 
  

   double 
  tuft 
  of 
  chestnut-brown 
  hairs. 
  On 
  the 
  second 
  and 
  third 
  segment, 
  in 
  the 
  

   middle 
  of 
  the 
  notched 
  black 
  line, 
  is 
  a 
  stripe 
  of 
  dull 
  white. 
  From 
  the 
  base 
  of 
  

   the 
  orange 
  brown-tufts 
  spring 
  a 
  few 
  scattered 
  black 
  hairs, 
  longest 
  anteriorly, 
  

   and 
  from 
  the 
  forepart 
  of 
  each 
  segment 
  arise 
  lateral 
  tufts 
  of 
  white 
  hairs. 
  The 
  

   stigmata 
  are 
  orange, 
  with 
  black 
  central 
  points. 
  Above 
  the 
  base 
  of 
  the 
  feet 
  is 
  a 
  

   black 
  interrupted 
  line, 
  out 
  of 
  which 
  spring 
  other 
  white 
  hairs, 
  irregularly 
  dis- 
  

   posed. 
  Under 
  side, 
  dull, 
  velvety 
  black, 
  with 
  the 
  anterior 
  portion 
  of 
  each 
  seg- 
  

   ment 
  whitish. 
  Feet 
  and 
  prolegs 
  black, 
  yellow 
  at 
  their 
  tips. 
  Length, 
  1.85 
  inch. 
  

   Food 
  plant, 
  Quercus 
  Sonomensis. 
  Benth. 
  

  

  The 
  larva 
  is 
  frequently 
  attacked 
  by 
  a 
  species 
  of 
  Ichneumon, 
  the 
  eggs 
  of 
  

   which 
  are 
  visible 
  on 
  the 
  head 
  and 
  anterior 
  segments. 
  

  

  Chrysalis. 
  Chestnut-brown, 
  with 
  few 
  hairs 
  along 
  the 
  base 
  of 
  each 
  segment. 
  

  

  Cocoon. 
  Ovo-lanceolate, 
  very 
  silky, 
  yellowish-white, 
  with 
  some 
  portions 
  

   glued 
  in 
  compact 
  mass, 
  and 
  whiter 
  than 
  the 
  remainder. 
  Chrysalis 
  only 
  im- 
  

   perfectly 
  seen 
  through 
  the 
  web. 
  

  

  Larva, 
  May 
  22d 
  ; 
  changed 
  to 
  chrysalis. 
  May 
  29th. 
  Imago, 
  June 
  16th. 
  

  

  LeucarcHa 
  acrea. 
  Drury. 
  

  

  Young 
  larva, 
  previous 
  to 
  last 
  moult. 
  Black, 
  with 
  yellow 
  patches, 
  ir- 
  

   regular 
  in 
  form, 
  along 
  the 
  sides 
  and 
  at 
  the 
  base 
  of 
  the 
  segments, 
  each 
  of 
  

   which 
  is 
  provided 
  with 
  seven 
  flesh-colored 
  tubercles, 
  from 
  which 
  spring 
  whitish 
  

   or 
  stone-colored 
  hairs, 
  sparsely 
  intermingled 
  with 
  black. 
  The 
  hairs 
  of 
  the 
  

  

  