﻿264 
  PROCEEDINGS 
  OF 
  THE 
  CALIFORNIA 
  

  

  The 
  following 
  paper 
  by 
  Mr. 
  Henry 
  Edwards 
  was 
  presented: 
  

  

  Pacific 
  Coast 
  Lepidoptera.— 
  No. 
  4. 
  Descriptions 
  of 
  some 
  New 
  

   Genera 
  and 
  Species 
  of 
  Heterocera.* 
  

  

  BY 
  HKNKY 
  EDWARDS. 
  

  

  Family 
  ARCTIID^. 
  H. 
  S. 
  

  

  Spilosoma 
  {Diaphora, 
  St.) 
  pteridis, 
  n. 
  sp. 
  

  

  Caterpillar. 
  Head 
  very 
  shining, 
  bright 
  chestnut 
  brown. 
  Body 
  dirty 
  white, 
  

   mottled 
  with 
  black 
  patches, 
  giving 
  a 
  slate 
  colored 
  tinge 
  to 
  the 
  surface, 
  with 
  

   three 
  indistinct 
  lines 
  of 
  yellowish-white, 
  two 
  lateral, 
  and 
  one 
  dorsal. 
  Hairs 
  

   springing 
  from 
  small 
  tubercles, 
  orange-brown, 
  inclining 
  to 
  chestnut, 
  entirely 
  

   hiding 
  the 
  ground 
  color 
  of 
  the 
  body. 
  Feet 
  and 
  prologs 
  pale 
  chestnut. 
  

  

  Length, 
  full 
  grown, 
  1.80 
  inch. 
  

  

  Food 
  plant, 
  Pteris 
  aquilina. 
  

  

  Changed 
  to 
  chrysalis, 
  August, 
  September. 
  Imago 
  appeared, 
  February. 
  

  

  Chrysalis. 
  Formed 
  usually 
  at 
  the 
  base 
  of 
  the 
  fern 
  fronds, 
  a 
  few 
  leaflets 
  be- 
  

   ing 
  loosely 
  drawn 
  together, 
  and 
  connected 
  by 
  a 
  rather 
  stout 
  web, 
  through 
  

   which 
  the 
  chrysalis 
  is 
  indistinctly 
  seen. 
  Chrysalis 
  short, 
  rounded 
  in 
  front, 
  

   blackish-brown, 
  with 
  a 
  few 
  pale 
  brown 
  hairs 
  about 
  the 
  posterior 
  segments. 
  

  

  Imago. 
  ^. 
  Head, 
  thorax, 
  and 
  abdomen 
  fawn 
  drab, 
  covered 
  with 
  long 
  hairs. 
  

   Antennae 
  bright 
  fawn 
  color 
  above, 
  with 
  black 
  pectinations, 
  wholly 
  black 
  be- 
  

   neath. 
  Palpi 
  brownish-black. 
  Wings 
  with 
  the 
  whole 
  upper 
  surface 
  dull 
  smoky- 
  

   brown, 
  a 
  little 
  darker 
  towards 
  the 
  margins, 
  and 
  with 
  a 
  black 
  discal 
  spot 
  on 
  each. 
  

   Primaries 
  slightly 
  waved 
  in 
  front 
  on 
  the 
  posterior 
  margin. 
  On 
  the 
  interior 
  

   margin 
  of 
  the 
  secondaries 
  is 
  a 
  row 
  of 
  hairs 
  of 
  the 
  same 
  color 
  as 
  the 
  abdomen. 
  

   Feet 
  and 
  legs 
  fawn 
  drab. 
  Fringes 
  blackish. 
  

  

  Under 
  side, 
  wholly 
  fawn 
  drab, 
  reddish 
  along 
  the 
  costal 
  margins, 
  with 
  the 
  

   discal 
  spot 
  very 
  distinctly 
  shown. 
  

  

  P 
  Head 
  and 
  thorax 
  red 
  brown, 
  the 
  former 
  almost 
  scarlet 
  in 
  front. 
  Antennae 
  

   and 
  palpi 
  orange 
  red. 
  Abdomen 
  yellowish 
  fawn-color. 
  Feet 
  and 
  legs 
  chest- 
  

   nut 
  brown, 
  with 
  bright 
  red 
  scales 
  above, 
  especially 
  on 
  the 
  middle 
  pair. 
  Fore 
  

   wings 
  slightly 
  hyaline, 
  reddish 
  chestnut, 
  immaculate, 
  with 
  the 
  nervures 
  very 
  dis- 
  

   tinctly 
  marked. 
  Costa 
  more 
  decidedly 
  reddish. 
  Fringe 
  chestnut, 
  marked 
  with 
  

   blackish 
  atoms. 
  Lower 
  wings 
  smoky, 
  with 
  black 
  spot 
  beyond 
  the 
  disc. 
  Fringes 
  

   pale 
  chestnut, 
  marked 
  with 
  blackish 
  streaks. 
  Under 
  side, 
  wholly 
  dull 
  buff. 
  

   Costa 
  reddish 
  chesnut. 
  On 
  the 
  disc 
  of 
  each 
  wing 
  is 
  a 
  black 
  lunate 
  mark. 
  The 
  

   P 
  of 
  this 
  species 
  bears 
  a 
  remarkable 
  resemblance 
  to 
  many 
  specimens 
  of 
  the 
  

   European 
  Pkragmatobia 
  fuliginosa, 
  as 
  well 
  as 
  to 
  the 
  same 
  sex 
  of 
  the 
  Cali- 
  

   fornia 
  Antardia 
  punctata. 
  It 
  may, 
  however, 
  be 
  readily 
  distinguished 
  by 
  its 
  more 
  

   delicate 
  form, 
  by 
  the 
  absence 
  of 
  spots 
  or 
  other 
  markings, 
  and 
  by 
  the 
  paler 
  

   color 
  of 
  the 
  under 
  side. 
  

  

  Length 
  of 
  body, 
  0.50 
  inch. 
  Expanse 
  of 
  wings, 
  1.05 
  inch. 
  

  

  Vancouver 
  Island. 
  (Coll. 
  Hy. 
  Edw.) 
  

  

  ♦Printed 
  in 
  advance, 
  February 
  19th, 
  1874. 
  

  

  