﻿ACADEMY 
  OF 
  SCIENCES. 
  165 
  

  

  placed. 
  In 
  some 
  individuals, 
  the 
  ground 
  color 
  of 
  the 
  chrysalis 
  is 
  very 
  pale 
  

   green. 
  Larvae 
  found 
  in 
  August 
  changed 
  to 
  chrysalis 
  in 
  September, 
  and 
  the 
  

   perfect 
  insects 
  appeared 
  in 
  the 
  following 
  Spring, 
  one 
  specimen 
  emerging 
  as 
  

   early 
  as 
  the 
  23d 
  of 
  February. 
  

  

  Papilio 
  Rutuhis. 
  Bois. 
  

  

  I 
  regret 
  that 
  at 
  present 
  I 
  can 
  say 
  nothing 
  with 
  certainty 
  respecting 
  the 
  larva 
  

   of 
  this 
  very 
  common 
  species, 
  but 
  it 
  is 
  reasonable 
  to 
  expect 
  that 
  our 
  ignorance 
  

   of 
  its 
  transformations 
  cannot 
  long 
  continue. 
  

  

  Chrysalis. 
  Remarkably 
  like 
  that 
  of 
  Eurymedon. 
  The 
  markings 
  are, 
  how- 
  

   ever, 
  certainly 
  more 
  regularly 
  disposed, 
  and 
  assume 
  the 
  form 
  of 
  stripes 
  and 
  rows 
  

   of 
  spots 
  and 
  lines. 
  On 
  the 
  seventh, 
  eighth, 
  and 
  ninth 
  segments 
  also, 
  the 
  raised 
  

   black 
  dots 
  are 
  distinctly 
  larger, 
  and 
  a 
  double 
  row 
  of 
  them 
  is 
  invariably 
  plainly 
  

   visible. 
  I 
  remark 
  this 
  character 
  in 
  five 
  specimens 
  of 
  the 
  chrysalis 
  which 
  I 
  have 
  

   found, 
  all 
  of 
  which 
  have 
  produced 
  the 
  true 
  typical 
  P. 
  Ruhilus. 
  Beyond 
  the 
  

   more 
  regular 
  arrangement 
  of 
  the 
  markings, 
  and 
  the 
  presence 
  of 
  two 
  black, 
  

   raised 
  dots 
  on 
  the 
  segments 
  referred 
  to, 
  I 
  can 
  discern 
  no 
  difference 
  in 
  the 
  chrys- 
  

   alis 
  state 
  of 
  P. 
  Rutulus 
  and 
  P. 
  Eurymedon. 
  

  

  Neophasia 
  menapia. 
  Felder. 
  

  

  Larva, 
  ignota. 
  

  

  Chrysalis. 
  Very 
  long 
  and 
  tubular, 
  with 
  the 
  beak 
  sharply 
  pointed, 
  slightly 
  

   thickened 
  toward 
  base 
  of 
  abdomen. 
  A 
  small 
  ridge-like 
  protuberance 
  on 
  the 
  

   thorax, 
  and 
  a 
  smaller 
  one 
  near 
  the 
  head. 
  Color 
  immediately 
  after 
  change, 
  pale 
  

   yellowish 
  green, 
  with 
  three 
  narrow 
  dorsal 
  stripes, 
  silvery 
  white. 
  The 
  lateral 
  

   stripes 
  enclosing 
  the 
  stigmata, 
  are 
  a 
  little 
  broader, 
  and 
  bent 
  upward 
  anteriorly. 
  

   Stigmata 
  brownish. 
  The 
  neuration 
  of 
  the 
  wings 
  is 
  plainly 
  seen, 
  and 
  at 
  their 
  

   base 
  is 
  a 
  well-defined 
  black 
  spot. 
  Toward 
  the 
  period 
  of 
  emergence, 
  the 
  chrys- 
  

   alis 
  loses 
  its 
  bright 
  green 
  color, 
  and 
  becomes 
  of 
  a 
  dark 
  olive 
  hue, 
  almost 
  black 
  

   above, 
  the 
  silvery 
  tone 
  of 
  the 
  stripes 
  changing 
  to 
  dirty 
  white, 
  the 
  coloration 
  of 
  

   the 
  wings 
  and 
  various 
  organs 
  being 
  more 
  distinctly 
  seen. 
  The 
  chrysalis 
  is 
  at- 
  

   tached 
  to 
  the 
  trunks 
  of 
  pine 
  and 
  fir 
  trees, 
  with 
  the 
  head 
  invariably 
  directed 
  up- 
  

   ward, 
  and 
  to 
  the 
  fronds 
  of 
  Pteris, 
  with 
  the 
  head 
  always 
  toward 
  the 
  point 
  of 
  

   the 
  frond. 
  

  

  Length, 
  0.80 
  inch. 
  Width, 
  0.15 
  inch. 
  

  

  I 
  was 
  fortunate 
  enough 
  to 
  discover 
  the 
  chrysalis 
  of 
  this 
  highly 
  interesting 
  

   species 
  during 
  a 
  recent 
  trip 
  to 
  Vancouver 
  Island, 
  but 
  the 
  most 
  diligent 
  search 
  

   did 
  not 
  reward 
  me 
  with 
  the 
  caterpillar. 
  It 
  doubtless 
  feeds 
  upon 
  the 
  Douglas 
  

   spruce 
  fir 
  [Abies 
  Douglassii), 
  and 
  should 
  be 
  sought 
  for 
  in 
  the 
  early 
  part 
  of 
  

   July. 
  

  

  Colias 
  eurytheme. 
  Bois. 
  

  

  With 
  reference 
  to 
  this 
  species, 
  I 
  extract 
  the 
  following 
  from 
  Mr. 
  W. 
  H. 
  Ed- 
  

   wards' 
  " 
  Butterflies 
  of 
  North 
  America." 
  

  

  