﻿36 
  REPORT 
  UNITED 
  STATES 
  ENTOMOLOGICAL 
  COMMISSION. 
  

  

  quits 
  feeding 
  and 
  becomes 
  dejected 
  and 
  drowsy, 
  creeps 
  to 
  some 
  sheltered 
  

   nook 
  and 
  there 
  lingers 
  for 
  a 
  time, 
  when 
  the 
  skin 
  of 
  its 
  head 
  and 
  thorax 
  

   cracks 
  and 
  it 
  wriggles 
  itself 
  out 
  a 
  soft 
  and 
  tender 
  looking 
  'hopper. 
  Soou^ 
  

   however, 
  the 
  tender 
  limbs 
  and 
  hodj 
  become 
  dry 
  and 
  rigid, 
  and 
  the 
  

   *'new" 
  locust 
  is 
  again 
  in 
  trim 
  for 
  its 
  raids 
  with 
  thousands 
  of 
  comrades 
  

   that 
  have 
  also 
  just 
  undergone 
  a 
  like 
  transformation. 
  Its 
  skin 
  is 
  now- 
  

   loose 
  and 
  flabby, 
  and 
  its 
  appetite 
  keen 
  from 
  its 
  late 
  fast. 
  The 
  time 
  re- 
  

   quired 
  for 
  this 
  transformation 
  or 
  rather 
  molting 
  of 
  the 
  skin 
  varies 
  from 
  

   one-half 
  to 
  more 
  than 
  one 
  hour, 
  according 
  to 
  the 
  state 
  of 
  the 
  weather 
  and 
  

   strength 
  of 
  the 
  locust 
  ; 
  warm, 
  sunshiny 
  mornings, 
  immediately 
  after 
  

   a 
  gentle 
  shower, 
  being 
  the 
  most 
  favorable 
  j 
  at 
  least 
  this 
  is 
  my 
  experi- 
  

   ence 
  in 
  reference 
  to 
  the 
  last 
  or 
  pupal 
  molt. 
  

  

  The 
  habits 
  of 
  the 
  young 
  are 
  quite 
  similar 
  to 
  those 
  of 
  the 
  mature 
  insect 
  

   in 
  many 
  respects, 
  while 
  in 
  others 
  they 
  differ 
  to 
  some 
  extent. 
  As 
  just 
  

   mentioned 
  they 
  are 
  migratory 
  by 
  nature 
  and 
  commence 
  traveling 
  soon 
  

   after 
  hatching, 
  not 
  entirely 
  in 
  search 
  of 
  food, 
  but 
  also 
  for 
  the 
  purpose 
  of 
  

   satisfying 
  that 
  inherited 
  longing 
  for 
  travel 
  with 
  which 
  all 
  little 
  C. 
  spretus 
  

   come 
  into 
  the 
  world. 
  They 
  all 
  move 
  in 
  the 
  same 
  general 
  direction 
  in 
  

   which 
  their 
  parent 
  swarms 
  did 
  as 
  they 
  came 
  into 
  the 
  district 
  where 
  the 
  

   eggs 
  were 
  deposited. 
  On 
  warm 
  sunshiny 
  days 
  the 
  little 
  fellows 
  become 
  

   somewhat 
  scattered 
  as 
  they 
  hop 
  about 
  in 
  search 
  of 
  food 
  ; 
  but 
  on 
  the 
  

   approach 
  of 
  night 
  or 
  lowering 
  weather 
  they 
  huddle 
  together 
  in 
  sheltered 
  

   localities, 
  especially 
  in 
  old 
  grass, 
  straw 
  piles, 
  under 
  clumps 
  of 
  dirt, 
  &c.,, 
  

   where 
  they 
  seem 
  to 
  be 
  contented. 
  As 
  they 
  grow 
  older 
  their 
  numbers 
  

   diminish 
  from 
  the 
  loss 
  of 
  companions 
  by 
  birds, 
  insects, 
  disease, 
  and 
  the 
  

   hardships 
  of 
  cold 
  and 
  wet 
  ; 
  but 
  their 
  desire 
  to 
  move 
  has 
  also 
  increased^ 
  

   They 
  have 
  left 
  their 
  hatching 
  places 
  and 
  gone 
  to 
  the 
  neighboring 
  fields 
  

   if 
  in 
  a 
  settled 
  district, 
  or 
  to 
  the 
  green 
  valleys 
  where 
  tender 
  herbs 
  and 
  

   grasses 
  abound 
  if 
  in 
  wild 
  and 
  unsettled 
  districts. 
  The 
  pupal 
  or 
  inter- 
  

   mediate 
  stage 
  differs 
  but 
  little 
  froni 
  that 
  of 
  the 
  larval 
  save 
  that 
  in 
  tiiis- 
  

   stage 
  of 
  their 
  lives 
  they 
  are 
  more 
  slovenly 
  or 
  sluggish 
  and 
  less 
  ravenous* 
  

   although 
  not 
  altogether 
  dormant 
  like 
  the 
  corresponding 
  stage 
  of 
  some 
  

   other 
  insects. 
  

  

  During 
  storms 
  and 
  cool 
  days 
  in 
  spring 
  the 
  young 
  are 
  often 
  so 
  be- 
  

   numbed 
  that 
  they 
  are 
  unable 
  to 
  rally 
  with 
  the 
  succeeding 
  sunshine, 
  and 
  

   in 
  such 
  cases 
  die 
  of 
  sheer 
  exhaustion. 
  

  

  Having 
  mentioned 
  a 
  few 
  characteristics 
  pertaining 
  to 
  the 
  natural 
  

   history 
  of 
  the 
  young, 
  it 
  will 
  now 
  be 
  in 
  place 
  to 
  mention 
  a 
  few 
  additional 
  

   traits 
  belonging 
  to 
  the 
  old 
  or 
  winged 
  insects. 
  

  

  As 
  soon 
  as 
  circumstances 
  will 
  permit 
  after 
  the 
  advent 
  of 
  its 
  change 
  

   from 
  a 
  wingless 
  insect 
  to 
  that 
  of 
  one 
  possessing 
  wan 
  gs, 
  it 
  leaps 
  into 
  the 
  

   air, 
  unfolds 
  its 
  new 
  and 
  hitherto 
  untried 
  members 
  and 
  takes 
  a 
  short 
  

   flight. 
  As 
  soon 
  as 
  everything 
  is 
  favorable, 
  which 
  is 
  on 
  the 
  first 
  tine 
  

   morning 
  with 
  a 
  pretty 
  brisk 
  breeze, 
  with 
  one 
  accord 
  numbers 
  spring 
  

   into 
  the 
  air, 
  and 
  begin 
  rising 
  in 
  a 
  circling 
  manner 
  until 
  they 
  have 
  at- 
  

   tained 
  a 
  sufficient 
  altitude, 
  when 
  they 
  permit 
  the 
  wind 
  to 
  carry 
  them 
  

  

  