﻿228 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  volxx. 
  

  

  liiufl 
  femora 
  luteo- 
  or 
  ferrugineo-testaceous, 
  very 
  obliquely 
  and 
  broadly 
  

   bifasciate 
  with 
  blackish 
  fuscous 
  above 
  aud 
  outside, 
  with 
  a 
  basal 
  patch 
  

   of 
  the 
  same, 
  the 
  whole 
  sometiijies 
  reduced 
  to 
  mere 
  clouds, 
  the 
  genicu- 
  

   lar 
  arc 
  and 
  sometimes 
  the 
  whole 
  geniculation 
  blackish 
  fuscous; 
  hind 
  

   tibiae 
  wholly 
  red, 
  the 
  spines 
  black 
  except 
  at 
  base, 
  ten 
  to 
  thirteen 
  in 
  

   number 
  in 
  the 
  outer 
  series. 
  Extremity 
  of 
  male 
  abdomen 
  a 
  little 
  cla- 
  

   vate, 
  upturned, 
  tlie 
  supraanal 
  plate 
  small, 
  subclypeate, 
  much 
  longer 
  

   than 
  broad, 
  the 
  lateral 
  margins 
  elevated 
  a 
  little 
  and 
  broadly 
  on 
  the 
  

   basal 
  half, 
  the 
  apex 
  subrectangulate, 
  a 
  little 
  rounded, 
  the 
  median 
  

   sulcus 
  not 
  deep, 
  percurrent, 
  with 
  sharp 
  but 
  low 
  bounding 
  walls 
  in 
  the 
  

   basal 
  half; 
  furciila 
  consisting 
  of 
  a 
  pair 
  of 
  subparallel, 
  slender, 
  tapering, 
  

   acuminate, 
  tiattened 
  tingers, 
  seated 
  on 
  rather 
  tumid 
  bases 
  (forming 
  

   part 
  of 
  the 
  last 
  dorsal 
  segment), 
  lying 
  outside 
  the 
  ridges 
  of 
  the 
  supra- 
  

   anal 
  plate, 
  and 
  extending 
  about 
  halfway 
  across 
  it; 
  cerci 
  small 
  feebly 
  

   falciform 
  lamellae, 
  tapering 
  on 
  the 
  basal 
  half 
  only 
  and 
  well 
  rounded 
  at 
  

   tip, 
  gently 
  incurved 
  aud 
  almost 
  as 
  long 
  as 
  the 
  supraanal 
  plate; 
  infra- 
  

   cereal 
  plates 
  large, 
  scarcely 
  longer 
  than 
  the 
  supuianal 
  plate, 
  almost 
  

   completely 
  concealed 
  by 
  the 
  recumbent 
  cerci; 
  snbgenital 
  i)late 
  small, 
  

   broad 
  but 
  longer 
  than 
  broad, 
  subpyramidal, 
  being 
  apically 
  compressed, 
  

   the 
  aj)ical 
  margin 
  slightly 
  elevated 
  and 
  subtubercular, 
  entire. 
  

  

  Length 
  of 
  body 
  (.1/. 
  <J. 
  teJhtstris), 
  male, 
  IG 
  mm., 
  female, 
  18.5 
  mm.; 
  

   antennae, 
  male, 
  7.5 
  mm,, 
  female, 
  G.25 
  mm.; 
  tegmina, 
  male 
  and 
  female, 
  

   5.25 
  mm. 
  ; 
  hind 
  femora, 
  male, 
  9 
  mm., 
  female, 
  10.5 
  mm. 
  Length 
  of 
  body 
  

   (il/. 
  d. 
  co)nj>Jeti(N), 
  male, 
  14.5 
  mm., 
  female, 
  17.5 
  mm.; 
  antennae, 
  male, 
  7 
  

   mm., 
  female, 
  G 
  mm. 
  (est.); 
  tegmina, 
  male, 
  15 
  mm., 
  female, 
  IG 
  mm.; 
  hind 
  

   femora, 
  male, 
  8.75 
  mm., 
  female, 
  10 
  mm. 
  

  

  Thirty-four 
  males, 
  42 
  females. 
  Fort 
  McLeod, 
  Alberta, 
  Canada, 
  

   August 
  (L. 
  Bruner; 
  TJ.S.ISr.M. 
  — 
  Riley 
  collection); 
  Souris 
  River, 
  Assini- 
  

   boia, 
  G. 
  M. 
  Dawson; 
  Montana 
  (U.S.:N^.M.— 
  Riley 
  collection); 
  Dakota 
  

   (same; 
  S. 
  H. 
  Scudder); 
  Cliftbrd, 
  Traill 
  County, 
  North 
  Dakota 
  (L. 
  

   Bruner); 
  Custer, 
  Black 
  Hills, 
  South 
  Dakota, 
  Bruner 
  (U.S.N.M.— 
  Riley 
  

   collection); 
  Wyoming, 
  Morrison 
  (same); 
  St. 
  Paul, 
  Minnesota, 
  August 
  

   27, 
  Whitman 
  (same); 
  Red 
  River, 
  Manitoba, 
  R. 
  Keunicott; 
  Dallas 
  

   County, 
  Iowa, 
  August, 
  J. 
  A. 
  Allen; 
  Jefferson, 
  Greene 
  County, 
  Iowa, 
  

   July 
  20-24, 
  Allen; 
  Crawford 
  County, 
  and 
  Denison, 
  Crawford 
  County, 
  

   Iowa, 
  July 
  10-24, 
  Allen 
  ; 
  Nebraska, 
  Dodge 
  ( 
  U.S.N.M.— 
  Riley 
  collection 
  ; 
  

   S. 
  Ilenshaw; 
  S. 
  H. 
  Scudder); 
  Lincoln, 
  Lancaster 
  County, 
  Nebraska, 
  

   September 
  (L. 
  Bruner); 
  Fort 
  Robinson, 
  Dawes 
  County, 
  Nebraska, 
  

   August 
  21, 
  Bruner 
  (U.S.N.M, 
  — 
  Riley 
  collection); 
  Colorado, 
  Morrison 
  

   (same; 
  S. 
  H. 
  Scudder); 
  Northeru 
  New 
  Mexico, 
  Lieutenant 
  Carpenter 
  

  

  Allen 
  found 
  the 
  si^ecies 
  in 
  Iowa 
  in 
  grass 
  on 
  prairies. 
  

  

  There 
  are 
  two 
  very 
  distinct 
  forms 
  of 
  this 
  species, 
  differing 
  however 
  

   only 
  in 
  the 
  length 
  of 
  the 
  organs 
  of 
  Hight, 
  the 
  tegmina 
  being 
  abbreviated 
  

   and 
  subacuminate 
  at 
  tip 
  in 
  the 
  form 
  M. 
  d. 
  iellustris 
  (retaining 
  the 
  

   second 
  oldest 
  name 
  for 
  the 
  form 
  incapable 
  of 
  flight), 
  and 
  fnlly 
  developed, 
  

   broad 
  and 
  ample, 
  greatly 
  surpassing 
  the 
  hind 
  femora 
  and 
  well 
  rounded 
  

  

  