﻿ACADEMY 
  OF 
  SCIENCES. 
  169 
  

  

  The 
  above 
  description 
  was 
  taken 
  by 
  Mr. 
  Stretch 
  from 
  some 
  specimens 
  found 
  

   by 
  me 
  at 
  Congress 
  Springs, 
  Santa 
  Clara 
  County, 
  in 
  June, 
  1871. 
  I 
  only 
  raised 
  

   one 
  specimen 
  out 
  of 
  three 
  ; 
  but 
  the 
  following 
  year 
  I 
  was 
  fortunate 
  enough 
  to 
  

   perfect 
  three 
  other 
  specimens, 
  and 
  recently, 
  in 
  Vancouver 
  Island, 
  four 
  others, 
  

   the 
  markings 
  of 
  the 
  larva 
  state 
  being 
  remarkably 
  constant 
  in 
  every 
  instance. 
  

  

  Chrijaalis, 
  fawn-color, 
  with 
  a 
  few 
  darker 
  markings 
  irregularly 
  placed. 
  On 
  

   each 
  side 
  of 
  the 
  abdomen, 
  near 
  its 
  base, 
  are 
  three 
  small 
  semi-oblong 
  silver 
  spots, 
  

   the 
  posterior 
  one 
  with 
  a 
  trace 
  of 
  gold 
  upon 
  it. 
  Thoracic 
  protuberance 
  large. 
  

   Beak 
  produced 
  into 
  a 
  sharp 
  point. 
  

  

  Changed 
  to 
  chrysalis, 
  June 
  20th-26th. 
  

  

  Imago 
  appeared 
  July 
  4th-18th. 
  

  

  Grapta 
  zephyr 
  us. 
  Edw. 
  

  

  Larva 
  : 
  Body 
  furnished 
  with 
  six 
  rows 
  of 
  many-branching 
  spines 
  ; 
  the 
  seg- 
  

   ments, 
  from 
  second 
  to 
  eighth 
  inclusive, 
  bright 
  buff 
  inclining 
  to 
  orange, 
  remaining 
  

   segments 
  pure 
  white. 
  Along 
  the 
  sides 
  are 
  two 
  waved 
  orange 
  lines, 
  uniting 
  

   irregularly 
  ; 
  the 
  interspaces, 
  which 
  are 
  bufl" 
  or 
  white 
  according 
  as 
  they 
  are 
  ante- 
  

   rior 
  or 
  posterior, 
  are 
  marked 
  with 
  black 
  dots 
  ; 
  above 
  the 
  orange 
  lines 
  are 
  some 
  

   faint 
  black 
  lines, 
  and 
  some 
  black 
  patches 
  are 
  discernible 
  at 
  the 
  base 
  of 
  lateral 
  

   spines. 
  Spiracles 
  black, 
  broadly 
  bordered 
  with 
  white. 
  Head 
  black, 
  with 
  short 
  

   black 
  spines 
  at 
  vertices. 
  Under 
  side 
  of 
  body 
  dull 
  flesh-color. 
  Feet 
  and 
  prolegs 
  

   with 
  pinkish 
  tinge. 
  Length, 
  1.05 
  inch. 
  

  

  Food-plant, 
  Azalea 
  occidenialis. 
  

  

  Chrysalis, 
  pale 
  brown, 
  the 
  general 
  shape 
  as 
  in 
  Comma, 
  but 
  the 
  mesonotal 
  

   process 
  more 
  prominent 
  and 
  rounded, 
  the 
  palpi 
  cases 
  more 
  produced 
  and 
  com- 
  

   pressed 
  at 
  the 
  base, 
  the 
  upper 
  tubercles 
  silvered. 
  

  

  The 
  larva 
  from 
  which 
  the 
  above 
  description 
  was 
  taken 
  was 
  found 
  by 
  me 
  in 
  

   the 
  Yosemite 
  Valley, 
  July 
  3d, 
  1871. 
  Changed 
  to 
  chrysalis 
  July 
  29th, 
  the 
  per- 
  

   fect 
  insect 
  emerging 
  on 
  the 
  1.5th 
  of 
  August. 
  The 
  species 
  is 
  very 
  common 
  near 
  

   Virginia 
  City, 
  Nevada, 
  and 
  in 
  many 
  of 
  the 
  warm 
  valleys 
  of 
  the 
  Sierra. 
  

  

  Vanessa 
  antiopa. 
  Linn. 
  

  

  Larva, 
  velvety 
  black, 
  entire 
  surface 
  covered 
  with 
  white 
  irrorations. 
  A 
  deep 
  

   black 
  dorsal 
  line 
  ; 
  each 
  segment 
  provided 
  with 
  four 
  spines, 
  the 
  inner 
  ones 
  being 
  

   branched, 
  the 
  outer 
  ones 
  simple 
  ; 
  the 
  second 
  segment 
  is, 
  however, 
  destitute 
  of 
  

   spines. 
  At 
  the 
  base 
  of 
  the 
  seven 
  middle 
  bundles 
  of 
  spines 
  is 
  a 
  reddish- 
  chestnut 
  

   tubercular 
  patch. 
  Head 
  black 
  ; 
  prolegs 
  black 
  ; 
  feet 
  chestnut, 
  fleshy 
  beneath. 
  

  

  Length, 
  2 
  inches. 
  

  

  Food-plants, 
  various 
  species 
  of 
  willows, 
  and 
  occasionally 
  on 
  rose-bushes. 
  

  

  Chrysalis, 
  brownish 
  gray, 
  with 
  some 
  darker 
  markings. 
  Palpi 
  cases 
  produced 
  

   into 
  a 
  sharp 
  spine. 
  Thorax 
  with 
  three 
  spines 
  on 
  its 
  dorsum, 
  the 
  middle 
  one 
  

   large 
  and 
  slightly 
  recurved, 
  two 
  minute 
  ones 
  near 
  its 
  base. 
  The 
  sides 
  of 
  the 
  

   thorax 
  are 
  produced 
  into 
  a 
  ridge, 
  armed 
  with 
  two 
  spines. 
  Wing-cases 
  also 
  with 
  

   a 
  small 
  spine 
  toward 
  their 
  extremities. 
  The 
  third 
  and 
  fourth 
  segments 
  are 
  pro- 
  

  

  