﻿238 
  Mr. 
  E. 
  Strand 
  on 
  new 
  

  

  not 
  only 
  in 
  ihe 
  colour, 
  as 
  pointed 
  out 
  by 
  previous 
  authors, 
  

   but 
  also 
  in 
  the 
  shape, 
  the 
  network, 
  &c. 
  

  

  In 
  the 
  ancient 
  collection 
  of 
  the 
  Museum 
  is 
  one 
  cocoon 
  from 
  

   Caracas 
  [Gollmer 
  leg.) 
  and 
  one 
  from 
  Cuba 
  {Gundlach 
  leg.), 
  

   both, 
  I 
  am 
  sorry 
  to 
  say, 
  without 
  the 
  insects. 
  The 
  former 
  is 
  

   15 
  mm. 
  long 
  - 
  and 
  8 
  mm. 
  broad, 
  the 
  supporting 
  thread 
  is 
  only 
  

   7 
  mm. 
  long, 
  but 
  has 
  probably 
  been 
  torn 
  off; 
  the 
  colour 
  black. 
  

   The 
  latter 
  cocoon 
  is 
  12x6 
  mm., 
  the 
  thread 
  ca. 
  50 
  mm., 
  the 
  

   colour 
  white. 
  In 
  the 
  JStaudinger 
  Collection 
  are 
  three 
  bright 
  

   salmon-red 
  or 
  orange-coloured 
  cocoons 
  from 
  the 
  Upper 
  

   Amazons 
  — 
  Fonteboa, 
  S. 
  Paulo, 
  and 
  Pebas, 
  the 
  first 
  two 
  with 
  

   the 
  insects 
  bred 
  from 
  them 
  ( 
  Trichostibas 
  funteboce 
  sp. 
  n., 
  and 
  

   sancti-paulensis 
  sp. 
  n.) 
  — 
  and 
  a 
  white 
  one 
  from 
  Merida. 
  The 
  

   latter 
  differs 
  from 
  the 
  one 
  from 
  Cuba 
  inasmuch 
  as 
  the 
  

   network 
  is 
  more 
  fine-meshed 
  ; 
  the 
  supporting 
  thread 
  is 
  only 
  

   4 
  mm. 
  long 
  and 
  at 
  the 
  end 
  strongly 
  enlarged 
  in 
  the 
  form 
  of 
  

   a 
  plate, 
  which 
  is 
  2*5 
  mm. 
  wide; 
  I 
  am 
  not 
  sure, 
  however, 
  if 
  

   this 
  thread 
  is 
  entire. 
  The 
  species 
  described 
  below 
  as 
  Tricho- 
  

   stibas 
  merida 
  sp. 
  n. 
  belongs 
  probably 
  -to 
  this 
  cocoon. 
  The 
  

   supporting 
  thread 
  of 
  the 
  orange-coloured 
  cocoons 
  bears 
  fine, 
  

   perpendicularly 
  offstanding 
  fibrils, 
  which 
  are 
  hardly 
  to 
  be 
  

   seen 
  with 
  the 
  naked 
  eye, 
  and 
  are 
  as 
  long 
  as 
  the 
  diameter 
  of 
  

   the 
  thread. 
  Owing 
  to 
  these 
  fibrils 
  the 
  thread 
  has 
  a 
  rough 
  

   appearance 
  and 
  easily 
  clings 
  tc 
  other 
  objects. 
  The 
  thread 
  of 
  

   the 
  cocoon 
  from 
  Pebas 
  bears, 
  moreover, 
  long, 
  fine, 
  woolly- 
  

   looking 
  fibres, 
  which 
  are 
  mostly 
  parallelly 
  directed. 
  The 
  

   white 
  cocoon 
  from 
  Merida 
  and 
  the 
  black 
  one 
  from 
  Caracas 
  

   have 
  no 
  such 
  perpendicular 
  fibrils 
  at 
  all; 
  the 
  orange 
  ones, 
  on 
  

   the 
  contrary, 
  bear 
  such 
  ones 
  also 
  on 
  the 
  heavier 
  parallel 
  

   threads 
  of 
  the 
  network, 
  but 
  none 
  on 
  the 
  thinner 
  cross-threads 
  ; 
  

   woolly-looking 
  fibres 
  are 
  never 
  to 
  be 
  seen 
  on 
  the 
  cocoons 
  

   themselves. 
  The 
  supporting 
  thread 
  is 
  never 
  fastened 
  on 
  the 
  

   inner 
  side 
  of 
  the 
  wall 
  of 
  the 
  cocoon, 
  but 
  often 
  distinctly 
  on 
  

   the 
  outer 
  side. 
  The 
  cocoon 
  from 
  S. 
  Paulo 
  is 
  especially 
  

   interesting, 
  owing 
  to 
  the 
  fact 
  that 
  the 
  meshes 
  are 
  filled 
  up 
  

   with 
  a 
  tissue 
  of 
  fine 
  fibres, 
  so 
  that 
  now 
  but 
  little 
  of 
  the 
  

   original 
  network 
  is 
  to 
  be 
  seen 
  ; 
  this 
  cocoon 
  is 
  also 
  more 
  

   cylindrifonn 
  than 
  the 
  others, 
  25 
  by 
  11 
  mm., 
  the 
  thread 
  ca. 
  

   160 
  mm. 
  long, 
  while 
  the 
  thread 
  of 
  the 
  cocoon 
  from 
  Fonteboa 
  

   is 
  only 
  65 
  mm. 
  The 
  meshes 
  form 
  mostly 
  an 
  elongate 
  

   parallelogram, 
  but 
  those 
  of 
  the 
  black 
  cocoon 
  from 
  Caracas 
  

   are 
  pentagonal 
  or 
  hexagonal 
  ; 
  it 
  measures 
  15 
  by 
  9 
  mm. 
  

   The 
  opening 
  at 
  the 
  upper 
  ei.d 
  of 
  the 
  cocoon 
  is 
  apparently 
  

   made, 
  or 
  at 
  least 
  widened, 
  when 
  the 
  moth 
  issues 
  ; 
  the 
  net- 
  

   work 
  around 
  the 
  opening 
  is 
  often 
  denser 
  than 
  in 
  the 
  middle 
  

   of 
  the 
  cocoon. 
  Blanchard 
  says 
  (/. 
  c.) 
  that 
  the 
  cocoons 
  may 
  

  

  