﻿234 
  THE 
  ZOOLOGIST. 
  

  

  EDITORIAL 
  GLEANINGS. 
  

  

  Mr. 
  Wm. 
  S. 
  Marshall 
  has 
  sent 
  us 
  the 
  following 
  most 
  interesting 
  

   account 
  of 
  the 
  processionary 
  habits 
  of 
  the 
  larvre 
  of 
  a 
  North 
  American 
  

   Moth 
  (Hemileuca 
  maia). 
  His 
  original 
  communication 
  appeared 
  in 
  the 
  

   'Biological 
  Bulletin 
  ' 
  of 
  the 
  Zoological 
  Laboratory, 
  University 
  of 
  Wis- 
  

   consin, 
  May, 
  1904. 
  

  

  " 
  In 
  the 
  autumn 
  of 
  1901, 
  while 
  collecting 
  along 
  the 
  marshy 
  shore 
  

   of 
  Lake 
  Wingra, 
  near 
  Madison, 
  I 
  noticed 
  many 
  specimens 
  of 
  the 
  

   Maia- 
  or 
  Buck-Moth 
  {Hemileuca 
  maia) 
  flying 
  low 
  over 
  the 
  marsh. 
  

   Both 
  males 
  and 
  females 
  were 
  present, 
  and 
  many 
  of 
  the 
  latter, 
  having 
  

   settled, 
  were 
  laying 
  their 
  eggs 
  on 
  the 
  grass. 
  These 
  were 
  placed 
  in 
  a 
  

   somewhat 
  irregular 
  set 
  of 
  spirals 
  closely 
  packed 
  together, 
  so 
  that 
  when 
  

   they 
  hardened 
  the 
  grass 
  could 
  often 
  be 
  pulled 
  away, 
  leaving 
  the 
  eggs 
  

   stuck 
  together, 
  and 
  forming 
  a 
  short 
  tube. 
  The 
  process 
  of 
  oviposition 
  

   and 
  the 
  arrangement 
  of 
  the 
  eggs 
  has 
  been 
  described 
  by 
  Riley,* 
  and 
  

   copied 
  by 
  Packard.! 
  

  

  "Without 
  having 
  any 
  definite 
  plans 
  in 
  view, 
  I 
  collected 
  a 
  great 
  

   many 
  of 
  the 
  eggs, 
  most 
  of 
  which 
  I 
  put 
  in 
  a 
  cold 
  place, 
  but 
  a 
  few 
  I 
  left 
  

   in 
  an 
  open 
  bottle 
  in 
  my 
  room. 
  Oue 
  morning 
  I 
  noticed 
  on 
  the 
  neck 
  of 
  

   this 
  bottle 
  a 
  black 
  mass, 
  which 
  was 
  found 
  to 
  be 
  a 
  group 
  of 
  young 
  

   caterpillars 
  ; 
  they 
  had 
  evidently 
  hatched 
  but 
  a 
  short 
  time 
  before. 
  

   Later 
  in 
  the 
  morning 
  I 
  again 
  looked 
  at 
  the 
  eggs, 
  and 
  found 
  that 
  more 
  

   had 
  hatched 
  ; 
  all 
  in 
  the 
  first 
  bunch, 
  having 
  in 
  the 
  meantime 
  left 
  the 
  

   bottle, 
  were 
  marching 
  in 
  a 
  line 
  on 
  the 
  table. 
  Again, 
  later 
  in 
  the 
  day 
  

   other 
  groups 
  were 
  seen, 
  and 
  in 
  nearly 
  every 
  instance 
  each 
  group 
  had 
  

   formed 
  a 
  line, 
  marching 
  in 
  a 
  regular 
  procession, 
  and 
  following 
  the 
  

   leader 
  whichever 
  way 
  he 
  turned. 
  I 
  placed 
  some 
  large 
  sheets 
  of 
  paper 
  

   on 
  the 
  table 
  ; 
  upon 
  these 
  the 
  different 
  groups 
  were 
  soon 
  marching, 
  

   and 
  could 
  be 
  much 
  more 
  easily 
  seen 
  than 
  when 
  upon 
  the 
  darker 
  table. 
  

   I 
  now, 
  with 
  a 
  pencil, 
  knocked 
  the 
  leader 
  away 
  from 
  one 
  line, 
  and 
  was 
  

   surprised 
  to 
  see 
  the 
  next 
  in 
  the 
  line, 
  now 
  the 
  leader, 
  stop 
  when 
  he 
  

   reached 
  the 
  place 
  occupied 
  by 
  the 
  first 
  leader 
  prior 
  to 
  his 
  removal. 
  

  

  * 
  Riley, 
  C. 
  V., 
  ' 
  Fifth 
  Missouri 
  Report,' 
  p. 
  128. 
  

  

  j 
  Packard, 
  A. 
  S., 
  ' 
  Insects 
  Injurious 
  to 
  Forest 
  and 
  Shade 
  Trees,' 
  Wash- 
  

   ington, 
  1890. 
  

  

  