﻿14 
  KEPORT 
  UNITED 
  STATES 
  ENTOMOLOGICAL 
  COMMISSION. 
  

  

  The 
  youDg 
  attain 
  tlieir 
  wings 
  during 
  July, 
  when 
  they 
  leave 
  either 
  to 
  

   the 
  southwest, 
  east, 
  or 
  north, 
  very 
  seldom 
  remaining 
  to 
  deposit 
  their 
  

  

  eggs. 
  

  

  During 
  the 
  summers 
  of 
  1874 
  and 
  1875, 
  as 
  well 
  as 
  1878, 
  the 
  locusts 
  

   were 
  so 
  numerous 
  at 
  Bozeman 
  that 
  they 
  entered 
  stores 
  and 
  eat 
  holes 
  in 
  

   the 
  various 
  kinds 
  of 
  goods. 
  They 
  came 
  from 
  the 
  northeast 
  to 
  east, 
  

   probably 
  from 
  the 
  Judith 
  and 
  Musselshell 
  basins, 
  and 
  north. 
  Some 
  

   were 
  hatched 
  on 
  the 
  Judith 
  in 
  1874 
  and 
  left 
  toward 
  the 
  west 
  and 
  south- 
  

   west 
  (Goodale). 
  Others 
  came 
  from 
  the 
  Milk 
  Eiver 
  and 
  north. 
  One 
  

   company 
  of 
  troops 
  going 
  through 
  this 
  section 
  mentions 
  the 
  appear- 
  

   ance 
  of 
  vast 
  swarms 
  of 
  locusts 
  coming 
  from 
  the 
  northeast 
  and 
  going 
  

   southwest. 
  They 
  were 
  coming 
  and 
  going 
  for 
  more 
  than 
  one 
  week. 
  

   This 
  was 
  in 
  August, 
  1878. 
  Some 
  of 
  the 
  men 
  with 
  whom 
  I 
  spoke 
  say 
  

   that 
  the 
  roar 
  of 
  their 
  wings 
  was 
  much 
  like 
  the 
  sound 
  of 
  a 
  tornado. 
  

  

  While 
  at 
  Fort 
  Keogh, 
  the 
  post 
  gardener 
  told 
  me 
  that 
  one 
  time 
  a 
  friend 
  

   of 
  his 
  was 
  up 
  in 
  the 
  Big 
  Horn 
  Mountains 
  and 
  saw 
  'Hhe 
  grasshoppers 
  

   piled 
  up 
  2 
  feet 
  deep 
  on 
  the 
  surface 
  of 
  snow-drifts" 
  j 
  but 
  he 
  could 
  give 
  no 
  

   dates 
  or 
  particulars 
  in 
  reference 
  to 
  size 
  or 
  species 
  of 
  locusts. 
  

  

  Au/just 
  10. 
  — 
  Between 
  Bozeman 
  and 
  Helena 
  the 
  country 
  is 
  mostly 
  high 
  

   and 
  dry, 
  with 
  many 
  rocks 
  scattered 
  about 
  over 
  the 
  surface. 
  The 
  val- 
  

   leys 
  are 
  small, 
  but 
  fertile. 
  This 
  year 
  there 
  are 
  but 
  few 
  migratory 
  locusts 
  

   in 
  this 
  section, 
  not 
  even 
  as 
  many 
  as 
  of 
  the 
  various 
  other 
  species. 
  Out- 
  

   side 
  of 
  the 
  genus 
  Oaloptenus, 
  the 
  natives 
  are 
  mostly 
  frequenters 
  of 
  high, 
  

   dry 
  soil, 
  where 
  they 
  can 
  do 
  no 
  particular 
  damage. 
  

  

  August 
  11. 
  — 
  Have 
  been 
  out 
  collecting 
  locusts, 
  but 
  succeeded 
  in 
  find- 
  

   ing 
  only 
  two 
  or 
  three 
  C. 
  spretus. 
  I 
  did, 
  however, 
  procure 
  about 
  twenty- 
  

   five 
  species 
  of 
  natives, 
  all 
  of 
  which 
  are 
  quite 
  abundant. 
  These 
  are 
  

   almost 
  all 
  mature, 
  but 
  I 
  noticed 
  a 
  few 
  that 
  had 
  just 
  hatched, 
  and 
  

   others 
  in 
  various 
  stages 
  of 
  growth 
  between 
  the 
  newly 
  hatched 
  and 
  ma- 
  

   ture 
  pupse. 
  I 
  also^ 
  found 
  a 
  few 
  of 
  the 
  migratory 
  crickets. 
  

  

  To-day 
  (August 
  12) 
  was 
  sx)ent 
  walking 
  about 
  among 
  the 
  farms 
  in 
  

   Prickly 
  Pear 
  Valley, 
  northeast 
  of 
  Helena. 
  No 
  G, 
  spretus 
  seen, 
  but 
  nu- 
  

   merous 
  natives 
  on 
  the 
  dry 
  grounds 
  bordering 
  the 
  valley. 
  Am 
  informed 
  

   that 
  these 
  never 
  venture 
  upon 
  or 
  do 
  damage 
  to 
  crops. 
  They 
  are 
  par- 
  

   tial 
  to 
  wild 
  land, 
  and 
  particularly 
  such 
  as 
  is 
  high 
  and 
  dry. 
  

  

  The 
  migratory 
  locust 
  has 
  been 
  an 
  almost 
  permanent 
  resident 
  of 
  this 
  

   valley 
  for 
  the 
  space 
  of 
  five 
  years, 
  or 
  from 
  1874 
  until 
  the 
  fall 
  of 
  1879 
  ; 
  

   and 
  it 
  has 
  been 
  claimed 
  by 
  some 
  that 
  early 
  this 
  spring 
  quite 
  a 
  large 
  

   area 
  of 
  country 
  was 
  occupied 
  by 
  young 
  just 
  southeast 
  of 
  Helena, 
  in 
  the 
  

   foot-hills. 
  This 
  I 
  hardly 
  think 
  true, 
  sitpce 
  I 
  visited 
  the 
  locality 
  and 
  

   found 
  only 
  natives 
  (a 
  few 
  C. 
  atJanis, 
  C. 
  femur 
  -ruhrum^ 
  C. 
  Mvittatus, 
  and 
  

   several 
  smaller 
  species). 
  These 
  were 
  confined 
  to 
  that 
  portion 
  of 
  the 
  

   foot-hills 
  just 
  below 
  timber 
  line. 
  

  

  The 
  migratory 
  locust 
  first 
  appeared 
  in 
  this 
  valley 
  in 
  July, 
  1874. 
  It 
  

   came 
  from 
  the 
  east 
  in 
  great 
  clouds, 
  left 
  eggs, 
  and 
  for 
  the 
  following 
  

   years 
  (1875, 
  1876, 
  1877, 
  1878, 
  and 
  1879) 
  was 
  a 
  permanent 
  resident 
  of 
  this 
  

  

  