﻿90 
  REPORT 
  UNITED 
  STATES 
  ENTOMOLOGICAL 
  COMMISSION. 
  

  

  respondenee, 
  is 
  not 
  yet 
  wholly 
  given 
  up. 
  We 
  find 
  it 
  frequently 
  stated 
  

   in 
  the 
  older 
  writers 
  that 
  these 
  kings 
  or 
  leaders 
  with 
  a 
  few 
  companions 
  

   go 
  before 
  the 
  army 
  a 
  day's 
  journey 
  as 
  it 
  were 
  to 
  find 
  out 
  suitable 
  stop- 
  

   ping 
  places, 
  to 
  which 
  the 
  main 
  body 
  comes 
  with 
  unerring 
  certainty* 
  

   Solomon 
  says 
  (Pro 
  v. 
  xxx, 
  27), 
  "The 
  locusts 
  have 
  no 
  king, 
  yet 
  go 
  they 
  

   forth 
  all 
  of 
  them 
  by 
  bands," 
  and 
  in 
  this 
  he 
  is 
  certainly 
  correct. 
  But 
  we 
  

   may 
  add 
  with 
  quaint 
  old 
  Purchas, 
  u 
  Though 
  they 
  be 
  sine 
  rege 
  sine 
  lege 
  7 
  

   yet 
  have 
  they 
  a 
  conspiring 
  agreement 
  to 
  do 
  mischief." 
  

  

  Sometimes 
  they 
  arise 
  suddenly 
  over 
  a 
  large 
  area, 
  as 
  if 
  inspired 
  

   instantaneously 
  by 
  the 
  same 
  impulse, 
  au 
  d 
  fly 
  away. 
  This 
  usually 
  hap- 
  

   pens 
  under 
  the 
  following 
  circumstances. 
  A 
  swarm 
  makes 
  a 
  start 
  in 
  a 
  

   given 
  direction, 
  and 
  are 
  stopped 
  by 
  an 
  adverse 
  wind 
  y 
  they 
  remain, 
  

   generally 
  doing 
  more 
  or 
  less 
  injury, 
  until 
  the 
  wind 
  again 
  turns 
  to 
  the 
  

   original 
  course. 
  If 
  this 
  change 
  happens 
  during 
  the 
  warm 
  part 
  of 
  the 
  day, 
  

   and 
  somewhat 
  suddenly, 
  almost 
  in 
  an 
  instant 
  all 
  are 
  on 
  the 
  wing. 
  

  

  The 
  following 
  extract 
  from 
  a 
  letter 
  by 
  Capt. 
  Leslie 
  Smith, 
  then 
  sta- 
  

   tioned 
  at 
  Fort 
  Sully, 
  Dak., 
  is 
  directly 
  to 
  the 
  point 
  : 
  ^ 
  

  

  It 
  has 
  been 
  observed 
  by 
  me 
  that 
  when 
  the 
  grasshoppers 
  are 
  on 
  the 
  wing, 
  if 
  the 
  

   wind 
  is 
  fair, 
  they 
  do 
  not 
  alight 
  ; 
  but 
  should 
  the 
  wind 
  suddenly 
  change 
  and 
  blow 
  a 
  

   little 
  fresh, 
  they 
  immediately 
  alight, 
  and 
  remain 
  until 
  the 
  wind 
  becomes 
  favorable 
  

   again, 
  when 
  they, 
  with 
  wonderful 
  unanimity, 
  take 
  wing 
  and 
  fly 
  off 
  on 
  their 
  intended 
  

   course. 
  

  

  Norton, 
  Norton 
  County, 
  Kansas, 
  August 
  13, 
  1877 
  : 
  

  

  The 
  divide 
  between 
  Prairie 
  Dog 
  and 
  the 
  Sapper 
  was 
  literally 
  covered 
  with 
  locusts 
  

   at 
  9 
  o'clock, 
  and 
  at 
  10.35 
  a 
  gust 
  of 
  wind 
  came 
  from 
  a 
  little 
  west 
  of 
  north, 
  when 
  the 
  

   whole 
  of 
  them 
  rose 
  and 
  started 
  off 
  on 
  their 
  southern 
  tour. 
  — 
  [Thomas 
  Beaumont. 
  

  

  It 
  also 
  occasionally 
  happens 
  that 
  they 
  depart 
  suddenly 
  and 
  in 
  concert 
  

   from 
  the 
  section 
  in 
  which 
  they 
  have 
  been 
  reared 
  ; 
  but 
  their 
  desire 
  to 
  

   depart 
  will 
  be 
  shown 
  previously 
  by 
  constantly 
  rising 
  in 
  the 
  air 
  in 
  the 
  

   hot 
  part 
  of 
  the 
  day, 
  taking 
  short 
  flights 
  and 
  circling 
  around 
  in 
  an 
  uneasy 
  

   and 
  impatient 
  manner. 
  This 
  occurs 
  usually 
  while 
  the 
  air 
  is 
  calm, 
  but 
  

   the 
  moment 
  it 
  turns 
  in 
  the 
  proper 
  direction^ 
  if 
  during 
  the 
  warm 
  part 
  of 
  

   the 
  day, 
  they 
  are 
  off. 
  But 
  it 
  is 
  usually 
  the 
  case 
  that 
  the 
  larger 
  swarms 
  

   are 
  formed 
  by 
  constant 
  additions 
  to 
  the 
  ranks 
  of 
  those 
  which 
  first 
  start. 
  

   Those 
  of 
  a 
  given 
  locality 
  starting, 
  as 
  they 
  move 
  along, 
  others 
  arise 
  and 
  

   join 
  them. 
  Lallemant, 
  who 
  has 
  studied 
  very 
  carefully 
  the 
  history 
  and 
  

   habits 
  of 
  the 
  locusts 
  of 
  Algiers 
  (A.peregrinum), 
  paying 
  particular 
  atten- 
  

   tion 
  to 
  their 
  migrations, 
  gives 
  this 
  as 
  his 
  opinion. 
  189 
  This 
  is 
  also 
  con- 
  

   firmed 
  by 
  the 
  statements 
  of 
  a 
  number 
  of 
  our 
  Western 
  correspondents. 
  

  

  The 
  following 
  notice 
  of 
  their 
  methods 
  of 
  forming 
  bands 
  is 
  given 
  in 
  the 
  

   account 
  of 
  the 
  invasion 
  of 
  Transylvania 
  in 
  1747, 
  and 
  the 
  resulting 
  brood 
  

   of 
  1748. 
  190 
  Speaking 
  of 
  the 
  resulting 
  brood, 
  the 
  writer 
  says 
  : 
  

  

  As 
  soon 
  as 
  any 
  of 
  them 
  found 
  themselves 
  able 
  to 
  use 
  their 
  wings, 
  they 
  soared 
  up, 
  

   and 
  by 
  flying 
  around 
  the 
  others 
  enticed 
  them 
  to 
  join 
  them, 
  their 
  numbers 
  increasing 
  

   daily; 
  they 
  took 
  circular 
  flights 
  of 
  twenty 
  or 
  thirty 
  yards 
  square, 
  until 
  they 
  were 
  

  

  »«> 
  Ann. 
  Soc. 
  Ent. 
  Belg., 
  is. 
  

  

  "ophil. 
  Trans., 
  vol. 
  46; 
  also, 
  Shaw's 
  Gou. 
  Zool., 
  vi, 
  130. 
  

  

  