﻿ACADEMY 
  OF 
  SCIENCES. 
  345 
  

  

  The 
  cocoon 
  was 
  formed 
  of 
  rather 
  long 
  hairs, 
  pale 
  fawn 
  color, 
  sparsely 
  

   mingled 
  with 
  black, 
  which 
  appear 
  to 
  rest 
  on 
  each 
  other, 
  and 
  to 
  be 
  irregularly 
  

   placed. 
  The 
  upper 
  portion 
  was 
  drawn 
  up 
  into 
  a 
  pointed 
  ridge 
  and 
  gable- 
  

   shaped, 
  like 
  the 
  roof 
  of 
  a 
  house, 
  while 
  the 
  base 
  was 
  spread 
  out, 
  and 
  attached 
  

   very 
  loosely 
  to 
  the 
  trunk 
  of 
  the 
  tree, 
  compelling 
  me 
  to 
  cut 
  away 
  a 
  piece 
  of 
  the 
  

   bark 
  in 
  order 
  to 
  secure 
  the 
  cocoon. 
  The 
  structure 
  of 
  the 
  chrysalis 
  case 
  of 
  this 
  

   genus 
  appears 
  to 
  be 
  peculiar. 
  According 
  to 
  Dr. 
  A. 
  S. 
  Packard, 
  '• 
  it 
  is 
  formed 
  out 
  

   of 
  the 
  hairs 
  of 
  the 
  caterpillar, 
  without 
  any 
  silken 
  threads 
  being 
  employed, 
  as 
  far 
  as 
  

   could 
  be 
  observed 
  by 
  microscopical 
  examination. 
  The 
  hairs 
  of 
  these 
  insects 
  

   are 
  thickly 
  armed 
  with 
  minute 
  spinules, 
  so 
  that 
  by 
  being 
  placed 
  next 
  to 
  each 
  

   other, 
  they 
  readily 
  adhere 
  together, 
  no 
  silk 
  being 
  spun 
  throughout 
  the 
  entire 
  

   operation." 
  

  

  This 
  insect, 
  which 
  is 
  at 
  present 
  rare 
  in 
  collections, 
  is 
  found 
  in 
  its 
  perfect 
  

   state 
  among 
  reeds 
  in 
  rather 
  marshy 
  districts, 
  and 
  may 
  be 
  known 
  by 
  its 
  bright 
  

   bluish 
  black 
  color, 
  with 
  crimson 
  marks 
  on 
  the 
  head 
  and 
  thorax. 
  Unless 
  in 
  

   very 
  hot 
  sunshine, 
  it 
  is 
  a 
  remarkably 
  sluggish 
  insect, 
  and 
  feigns 
  death 
  when 
  

   captured. 
  

  

  A 
  still 
  scarcer, 
  but 
  closely 
  allied 
  species, 
  described 
  by 
  rae 
  in 
  these 
  Transactions 
  

   as 
  Ctenuclia 
  Wahinghamii, 
  was 
  taken 
  by 
  Lord 
  Walsinghara 
  some 
  three 
  years 
  

   since 
  in 
  Southern 
  Oregon. 
  I 
  have 
  now 
  to 
  record 
  the 
  capture 
  of 
  two 
  other 
  

   specimens 
  of 
  this 
  rare 
  insect 
  by 
  Mrs. 
  Howard 
  Ooit, 
  in 
  Napa 
  County, 
  and 
  by 
  her 
  

   kindly 
  added 
  to 
  my 
  collection. 
  This 
  indicates 
  rather 
  a 
  wider 
  range 
  than 
  be- 
  

   longs 
  to 
  most 
  members 
  of 
  the 
  genus, 
  as 
  they 
  appear 
  from 
  our 
  present 
  knowl- 
  

   edge 
  of 
  them 
  to 
  be 
  remarkably 
  local. 
  

  

  The 
  members 
  of 
  the 
  Academy 
  were 
  invited 
  by 
  Mr. 
  Stearns, 
  on 
  

   behalf 
  of 
  the 
  Board 
  of 
  Regents 
  of 
  the 
  University 
  of 
  CaUfornia, 
  to 
  

   attend 
  the 
  commencement 
  exercises 
  at 
  Berkeley. 
  A 
  vote 
  of 
  

   thanks 
  was 
  passed 
  to 
  the 
  Regents 
  for 
  their 
  courtesy. 
  

  

  Professor 
  Davidson 
  reported 
  that 
  the 
  trustees 
  had 
  held 
  a 
  number 
  

   of 
  meetings 
  with 
  regard 
  to 
  framing 
  a 
  new 
  constitution, 
  and 
  had 
  

   called 
  in 
  to 
  their 
  aid 
  Judge 
  Curry, 
  R. 
  C. 
  Harrison, 
  and 
  Samuel 
  

   Wilson. 
  They 
  hoped 
  to 
  present 
  to 
  the 
  Academy 
  at 
  the 
  next 
  meet- 
  

   ing 
  such 
  amendments 
  to 
  the 
  constitution 
  as 
  were 
  required 
  to 
  guard 
  

   against 
  mistakes 
  in 
  the 
  management 
  of 
  their 
  property. 
  

  

  