﻿306 
  PBOCEEDINGS 
  OF 
  TEE 
  NATIONAL 
  MUSEVM. 
  vol.xx. 
  

  

  sides, 
  laterally 
  compressed 
  just 
  before 
  the 
  apex 
  and 
  the 
  margin 
  a 
  little 
  

   tortuous, 
  the 
  apex 
  itself 
  strongly 
  aeutangulate 
  but 
  blunt, 
  the 
  median 
  

   sulcus 
  percurrent, 
  but 
  nearly 
  effaced 
  at 
  the 
  constriction; 
  furcula 
  con- 
  

   sistino- 
  of 
  a 
  pair 
  of 
  slender, 
  subcylindrical, 
  pretty 
  strongly 
  divergent, 
  

   arcuate, 
  regularly 
  tapering, 
  acuminate 
  lingers, 
  not 
  a 
  third 
  as 
  long 
  as 
  the 
  

   supraanal 
  plate; 
  cerci 
  consisting 
  of 
  spatulate 
  incurved 
  pads, 
  hardly 
  

   three 
  times 
  as 
  long 
  as 
  the 
  basal 
  breadth, 
  gently 
  and 
  slightly 
  tapering 
  

   from 
  base 
  to 
  middle, 
  beyond 
  well 
  rounded, 
  nearly 
  as 
  broad 
  as 
  at 
  base, 
  

   exteriorly 
  hollowed, 
  and 
  reaching 
  only 
  to 
  the 
  compressed 
  part 
  of 
  the 
  

   supraanal 
  plate; 
  infracercal 
  plates 
  forming 
  broad 
  taperiug 
  cushions 
  

   for 
  the 
  cerci 
  to 
  rest 
  ui)on, 
  as 
  long 
  as 
  the 
  supraanal 
  plate; 
  subgeiiital 
  

   plate 
  forming 
  a 
  feebly 
  llaring 
  quadratic 
  scoop, 
  the 
  apical 
  margin 
  feebly 
  

   elevated 
  laterally 
  and 
  between 
  these 
  elevations 
  feebly 
  notched. 
  

  

  Length 
  of 
  body, 
  male, 
  iiO 
  mm., 
  female, 
  22.5 
  mm.; 
  antennae, 
  male, 
  10 
  

   ram., 
  female, 
  8.75 
  mm.; 
  tegniina. 
  male, 
  IG 
  mm., 
  female, 
  16.5mm.; 
  hind 
  

   femora, 
  male, 
  11.5 
  mm., 
  female, 
  13 
  mm. 
  

  

  Three 
  males, 
  3 
  females. 
  Fort 
  Robinson, 
  Dawes 
  County, 
  Nebraska, 
  

   August 
  (L. 
  Bruner); 
  West 
  Point, 
  Cuming 
  County, 
  Nebraska, 
  July 
  

   (U.S.N.M. 
  — 
  Eiley 
  collection); 
  Yellowstone, 
  Montana, 
  August 
  (L. 
  

   Bruner). 
  Since 
  description, 
  Mr. 
  \V. 
  S. 
  Blatchley 
  has 
  sent 
  me 
  speci- 
  

   mens 
  from 
  Lake 
  County, 
  Indiana. 
  

  

  Bruner 
  states 
  that 
  this 
  species 
  feeds 
  on 
  Artemisia 
  and 
  prefers 
  " 
  to 
  

   jump 
  from 
  plant 
  to 
  plant 
  rather 
  than 
  to 
  alight 
  upon 
  the 
  ground.'' 
  " 
  It 
  

   occurs 
  both 
  on 
  high 
  and 
  low 
  lauds, 
  but 
  appears 
  to 
  be 
  somewhat 
  partial 
  

   to 
  old 
  breakings 
  and 
  well-fed 
  pastures 
  of 
  many 
  years' 
  use." 
  

  

  I 
  suspect 
  that 
  the 
  insect 
  from 
  Minnesota, 
  described 
  by 
  Thomas' 
  as 
  a 
  

   variety 
  of 
  Caloptenns 
  occidentalism 
  may 
  belong 
  to 
  this 
  species. 
  

  

  95. 
  MELANOPLUS 
  IMPIGER, 
  new 
  species. 
  

  

  (Plate 
  XX, 
  figs. 
  7, 
  8.) 
  

  

  Of 
  moderately 
  large 
  size, 
  above 
  rather 
  light 
  brownish 
  fuscous 
  with 
  

   a 
  ferruginous 
  tinge, 
  below 
  luteo-testaceous. 
  Head 
  slightly 
  prominent, 
  

   dull 
  luteo-testaceous, 
  often 
  punctate 
  with 
  olivaceous, 
  with 
  a 
  postocular 
  

   piceous 
  band, 
  and 
  above 
  much 
  mottled 
  or 
  marmorate 
  with 
  fuscous; 
  

   vertex 
  gently 
  tumid, 
  considerably 
  elevated 
  above 
  the 
  level 
  of 
  the 
  pro- 
  

   notum, 
  the 
  interspace 
  between 
  the 
  eyes 
  fully 
  half 
  as 
  broad 
  again 
  (male) 
  

   or 
  fully 
  twice 
  as 
  broad 
  (female) 
  as 
  the 
  first 
  antenna! 
  joint; 
  fastigium 
  

   steeply 
  declivent, 
  shallowly 
  and 
  broadly 
  sulcate, 
  sometimes 
  feebly 
  

   in 
  the 
  female; 
  frontal 
  costa 
  percurrent 
  (male) 
  or 
  scarcely 
  percurrent 
  

   (female), 
  feebly 
  contracted 
  above 
  but 
  otherwise 
  subequal, 
  as 
  broad 
  as 
  

   the 
  interspace 
  between 
  the 
  eyes, 
  and 
  so 
  distinctly 
  broader 
  in 
  the 
  female 
  

   than 
  in 
  the 
  male, 
  feebly 
  but 
  variably 
  sulcate 
  at 
  and 
  a 
  little 
  below 
  the 
  

   ocellus, 
  punctate 
  throughout; 
  eyes 
  rather 
  large, 
  not 
  very 
  prominent, 
  

   distinctly 
  longer 
  than 
  the 
  infraocular 
  portion 
  of 
  the 
  genae; 
  antennae 
  

  

  Rep. 
  IT. 
  S. 
  Geol. 
  & 
  Geogr. 
  Surv., 
  V., 
  p. 
  1B2. 
  

  

  