﻿SOUTHERN 
  RANGE 
  OF 
  THE 
  LOCUST 
  EN 
  NEW 
  MEXICO. 
  159 
  

  

  1S79. 
  — 
  We 
  were 
  told 
  at 
  San 
  Juan 
  that 
  there 
  were 
  a 
  lew 
  locusts 
  on 
  the 
  

   grain-lields 
  at 
  this 
  point, 
  but 
  on 
  examination 
  found 
  only 
  a 
  few 
  of 
  the 
  na- 
  

   tive 
  grasshoppers, 
  such 
  as 
  species 
  of 
  QSdipoda. 
  We 
  believe 
  that 
  none 
  

   existed 
  in 
  New 
  Mexico 
  in 
  1S79, 
  unless 
  scattered 
  individuals 
  among 
  the 
  

   mountains 
  near 
  the 
  Colorado 
  line. 
  The 
  summer 
  of 
  1879 
  was 
  exception- 
  

   ally 
  dry 
  — 
  the 
  •• 
  driest 
  since 
  1852." 
  As 
  already 
  stated, 
  it 
  was 
  also 
  excep 
  

   tionally 
  dry 
  in 
  Colorado 
  and 
  Utah. 
  

  

  SOUTHERN 
  RANGE 
  OF 
  THE 
  LOCUST 
  IN 
  NEW 
  3LEXICO. 
  

  

  The 
  Rocky 
  Mountain 
  locust 
  {Caloptenus 
  spretus) 
  in 
  the 
  year 
  1868 
  

   seemed 
  to 
  have 
  extended 
  farther 
  south 
  than 
  any 
  year 
  before 
  or 
  since, 
  so 
  

   far 
  as 
  we 
  could 
  ascertain. 
  As 
  ex-Governor 
  Amy 
  informed 
  us, 
  the 
  farth- 
  

   est 
  point 
  south 
  to 
  which 
  they 
  flew 
  was 
  one 
  hundred 
  and 
  forty 
  miles 
  

   south 
  of 
  Santa 
  Fe 
  ; 
  this 
  would 
  carry 
  the 
  southern 
  limits 
  of 
  the 
  region 
  

   periodically 
  visited 
  by 
  this 
  species 
  of 
  locust 
  as 
  far 
  south 
  as 
  Fort 
  Craig 
  

   on 
  the 
  Rio 
  Grande 
  River 
  in 
  Socorro 
  County. 
  So 
  that 
  we 
  may 
  infer 
  that 
  

   occasionally, 
  though 
  rarely, 
  the 
  northern 
  two-thirds 
  of 
  Xew 
  Mexico, 
  i. 
  e., 
  

   the 
  portion 
  lying 
  north 
  of 
  the 
  31th 
  parallel, 
  are 
  liable 
  to 
  invasion 
  from 
  

   locusts 
  breeding 
  in 
  the 
  Arkansas 
  and 
  San 
  Juan 
  valleys 
  of 
  Southern 
  Col- 
  

   orado. 
  In 
  accordance 
  with 
  these 
  facts, 
  we 
  have 
  altered 
  the 
  map 
  and 
  

   extended 
  the 
  Temporary 
  Region 
  so 
  as 
  to 
  cover 
  the 
  northern 
  two-thirds 
  

   of 
  the 
  Territory 
  of 
  Xew 
  Mexico. 
  

  

  Ex-Governor 
  Amy, 
  who 
  was 
  agent 
  of 
  the 
  Xavajo 
  Indians 
  and 
  lived 
  on 
  

   this 
  reservation 
  in 
  the 
  northwestern 
  corner 
  of 
  the 
  Territory, 
  thinks 
  that 
  

   the 
  locusts 
  breed 
  in 
  that 
  region 
  of 
  Arizona 
  lying 
  northwest 
  of 
  Valencia 
  

   County, 
  New 
  Mexico, 
  and 
  that 
  it 
  is 
  not 
  improbable 
  that 
  the 
  locusts 
  breed 
  

   in 
  Eastern 
  Arizona, 
  i. 
  e., 
  that 
  part 
  next 
  to 
  Socorro 
  County, 
  New 
  Mexico, 
  

   and 
  extending 
  northward 
  to 
  the 
  Navajo 
  Agency. 
  As 
  stated 
  in 
  our 
  First 
  

   Report, 
  Mr. 
  Thomas 
  has 
  seen 
  a 
  few 
  specimens 
  from 
  Arizona 
  collected 
  by- 
  

   Lieutenant 
  Wheeler's 
  expeditions 
  during 
  the 
  four 
  years 
  previous 
  to 
  

   1877. 
  We 
  venture 
  to 
  predict 
  that 
  this 
  species 
  will 
  yet 
  be 
  found 
  in 
  the 
  

   Mogollon 
  Mountains 
  of 
  Eastern 
  Arizona. 
  

  

  CHANGES 
  IN 
  THE 
  ZtfAP 
  SHOWING- 
  THE 
  DISTRIBUTION, 
  MIGRATIONS, 
  

   AND 
  BREEDING- 
  GROUNDS 
  OF 
  THE 
  ROCKY 
  MOUNTAIN 
  LOCUST. 
  

  

  The 
  following 
  changes 
  in 
  the 
  large 
  folding 
  map 
  showing 
  the 
  distribu- 
  

   tion, 
  migrations, 
  permanent 
  and 
  subpermanent 
  breeding 
  grounds, 
  &c, 
  

   of 
  the 
  Rocky 
  Mountain 
  locust 
  in 
  the 
  First 
  Report, 
  have 
  been 
  rendered, 
  

   necessary 
  by 
  the 
  investigations 
  made 
  during 
  the 
  summers 
  of 
  1878 
  and 
  

   1879, 
  and 
  the 
  historical 
  data 
  collected 
  in 
  Xew 
  Mexico 
  during 
  the 
  last 
  

   summer. 
  

  

  In 
  the 
  map 
  as 
  originally 
  published, 
  the 
  Uintah 
  Mountain 
  region 
  in 
  

   Utah, 
  and 
  the 
  valley 
  of 
  the 
  White 
  River 
  iu 
  Western 
  Colorado, 
  and 
  the 
  

   San 
  Luis 
  Valley 
  and 
  adjacent 
  mountainous 
  region 
  in 
  Colorado, 
  and 
  the 
  

   Wiud 
  River 
  region 
  and 
  Yellowstone 
  Park 
  in 
  Wyoming, 
  as 
  well 
  as 
  the 
  

  

  