﻿NO. 
  1124. 
  REVISION 
  OF 
  THE 
  MELANOPLI-SCUDDER. 
  5 
  

  

  me, 
  but 
  insufficiently. 
  Podisma 
  follows, 
  with 
  about 
  twenty 
  four 
  

   !S])ecies, 
  of 
  which 
  only 
  eight 
  are 
  found 
  in 
  America, 
  theu 
  Aeoloplus 
  with 
  

   ten, 
  Hesperotettix 
  with 
  eight, 
  and 
  Bradynoies 
  with 
  seven. 
  The 
  remaining 
  

   genera 
  have 
  at 
  the 
  most 
  only 
  three 
  or 
  four 
  species 
  each, 
  and 
  fourteen 
  

   of 
  them 
  are 
  monotypic. 
  

  

  The 
  genera 
  with 
  widest 
  latitudinal 
  range 
  (over 
  twenty 
  degrees) 
  are, 
  

   l)iiniarily, 
  Melanoplus^ 
  and 
  then 
  Hesperotettix 
  (eight 
  species), 
  Phoe- 
  

   taliotes 
  (one 
  species), 
  Oedaleonotus 
  (one 
  species), 
  CampyJacantha 
  (four 
  

   species), 
  and 
  probably 
  Podisma 
  (eight 
  species). 
  Aeoloplus 
  (ten 
  species) 
  

   follows 
  hard 
  after. 
  The 
  genera 
  characteristic 
  of 
  the 
  United 
  States, 
  

   with 
  narrowest 
  known 
  limits, 
  are 
  Gymnoscirtetes 
  and 
  Uotettix, 
  both 
  

   known 
  only 
  from 
  Florida. 
  Tiiese 
  last 
  two, 
  with 
  Paroxya 
  and 
  Apieno- 
  

   pedes, 
  are 
  the 
  only 
  genera 
  (with 
  eight 
  species 
  between 
  them) 
  confined 
  

   to 
  the 
  easteru 
  United 
  States, 
  if 
  Texas 
  may 
  be 
  included 
  in 
  that 
  term, 
  

   for 
  they 
  do 
  not 
  extend 
  west 
  of 
  that. 
  Most 
  of 
  the 
  genera 
  are 
  western, 
  

   using 
  that 
  term 
  in 
  a 
  broad 
  sense, 
  though 
  Hypochlora, 
  Campylacantha, 
  

   Dendrotettix, 
  Paratyiotropidia, 
  and 
  Phoetaliotes 
  — 
  all 
  but 
  Campylacantha 
  

   monotypic 
  genera 
  — 
  are 
  peculiar 
  to 
  the 
  Mississippi 
  Yalley, 
  though 
  prin- 
  

   cipally 
  to 
  its 
  western 
  half. 
  The 
  only 
  genera 
  found 
  across 
  or 
  almost 
  

   across 
  the 
  continent, 
  or 
  at 
  all 
  events 
  on 
  opposite 
  sides 
  of 
  the 
  continent, 
  

   are 
  Melanoplus^ 
  Hesperotettix^ 
  and 
  Podisma. 
  Aeoloplus 
  (ten 
  species), 
  

   Bradynotes 
  (seven 
  species), 
  PoecHotettix 
  (three 
  sj)ecies), 
  Oedaleonotus 
  

   (one 
  species), 
  and 
  Asemoplus 
  (one 
  species) 
  are 
  characteristic 
  of 
  the 
  

   extreme 
  West. 
  Finally, 
  Hypochlora 
  (one 
  species), 
  Bradynotes 
  (seven 
  

   species), 
  Podisma 
  (eight 
  species), 
  and 
  Asemoplus 
  (one 
  species) 
  are 
  con- 
  

   fined 
  or 
  nearly 
  confined 
  to 
  the 
  region 
  north 
  of 
  latitude 
  35°. 
  Podisma 
  

   has 
  also 
  the 
  same 
  limitations 
  in 
  the 
  Old 
  World. 
  Regarding 
  the 
  distri- 
  

   bution 
  of 
  Melaiioplus, 
  witli 
  its 
  great 
  pre])onderauce 
  of 
  forms, 
  further 
  

   details 
  will 
  be 
  given 
  under 
  that 
  genus. 
  

  

  There 
  are 
  but 
  few 
  species 
  which 
  range 
  across 
  the 
  continent, 
  yet 
  not 
  

   a 
  few 
  have 
  a 
  very 
  wide 
  distribution. 
  The 
  examples 
  of 
  the 
  former 
  are 
  

   wholly 
  confined 
  to 
  Melanoplus 
  : 
  M. 
  atlanis, 
  fasciatus, 
  tenuir-rubrumy 
  

   extremus, 
  minor, 
  undfemoratus, 
  M. 
  extremus 
  only 
  in 
  the 
  high 
  north. 
  As 
  

   illustrations 
  of 
  the 
  latter 
  may 
  be 
  mentioned 
  Hesperotettix 
  pratensis, 
  

   Phoetaliotes 
  nehrascensis, 
  Paroxya 
  foridana, 
  Oedaleonotus 
  enigma^ 
  and 
  

   the 
  following 
  species 
  of 
  Melanoplus: 
  flabellifer, 
  spretus, 
  scudderi, 
  daic- 
  

   soni, 
  cinereus, 
  pacl^ardH, 
  luridus, 
  differentialis, 
  bivittatus, 
  H'\m\ 
  i)unctula- 
  

   tus. 
  Most 
  of 
  these 
  range 
  moi-e 
  widely 
  from 
  north 
  to 
  south 
  than 
  from 
  

   east 
  to 
  west. 
  About 
  three 
  fourths 
  of 
  all 
  the 
  species 
  are 
  known 
  from 
  

   west 
  of 
  the 
  Mississippi 
  River 
  only. 
  

  

  J)hnorphism 
  in 
  tenr/th 
  of 
  tepmina. 
  — 
  We 
  find 
  in 
  the 
  Melanopli 
  every 
  

   variation 
  possible 
  in 
  the 
  length 
  of 
  the 
  tegmina, 
  but 
  the 
  species 
  are 
  iu 
  

   general 
  tolerably 
  well 
  fixed 
  in 
  this 
  respect. 
  The 
  same 
  is 
  the 
  case 
  with 
  

   most 
  of 
  the 
  genera, 
  the 
  species 
  of 
  which 
  are 
  in 
  each 
  case 
  generally 
  

   apterous, 
  provided 
  with 
  lateral 
  pads, 
  abbreviated 
  tegmina, 
  or 
  fully 
  

  

  