﻿336 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.xx. 
  

  

  an 
  ten 
  uae 
  about 
  thi;ee-foiirtlis 
  (male) 
  or 
  over 
  two-tliirds 
  (female) 
  as 
  long 
  

   as 
  the 
  bind 
  femora. 
  Prouotum 
  ratber 
  aniforin, 
  subequal, 
  tbe 
  metazona 
  

   broadening' 
  slightly, 
  especially 
  in 
  the 
  male, 
  subpunctate; 
  mediau 
  

   carina 
  distinct 
  throughout, 
  but 
  much 
  slighter 
  on 
  the 
  ])rozoua 
  than 
  on 
  

   the 
  metazona; 
  lateral 
  carinae 
  tolerably 
  distinct 
  throughout, 
  but 
  blunt; 
  

   transverse 
  sulci 
  of 
  prozona 
  distinct 
  throughout, 
  unusually 
  sinuous, 
  not 
  

   severing 
  the 
  median 
  carina; 
  [)rozona 
  transverse, 
  occasionally 
  in 
  the 
  

   male 
  subquadrate, 
  distinctly 
  longer 
  than 
  the 
  metazona. 
  Prosterual 
  

   spine 
  short, 
  stout, 
  erect, 
  conico-cylindrical, 
  appressed, 
  more 
  so 
  in 
  the 
  

   female 
  than 
  in 
  the 
  male; 
  interspace 
  between 
  mesosternal 
  lobes 
  half 
  as 
  

   long 
  again 
  as 
  broad 
  (male) 
  or 
  transverse, 
  but 
  narrower 
  than 
  the 
  lobes 
  

   (female). 
  Tegmina 
  attaining', 
  generally 
  surpassing' 
  a 
  little, 
  the 
  tips 
  of 
  

   the 
  hind 
  femora, 
  slender, 
  feebly 
  tapering. 
  Extremity 
  of 
  male 
  abdomen 
  

   clavate, 
  a 
  little 
  recurved, 
  the 
  supraanal 
  plate 
  rounded 
  triangular, 
  the 
  

   extreme 
  ajiex 
  excised, 
  fully 
  as 
  broad 
  as 
  long; 
  furcula 
  reduced 
  to 
  a 
  pair 
  

   of 
  minute 
  and 
  blunt 
  triangular 
  teeth; 
  cerci 
  thickened 
  and 
  tumid 
  at 
  

   base, 
  immediately 
  narrowing 
  to 
  half 
  the 
  width 
  and 
  compressed, 
  almost 
  

   immediately 
  broadening 
  again, 
  curving 
  inward 
  while 
  they 
  run 
  back- 
  

   wark 
  and 
  upward, 
  and 
  forking, 
  the 
  upper 
  branch 
  directed 
  upward 
  and 
  

   inward, 
  nearly 
  as 
  large 
  as 
  the 
  basal 
  expansion, 
  subtriangular, 
  a 
  little 
  

   longer 
  than 
  broad, 
  compressed 
  and 
  apically 
  rounded; 
  the 
  other 
  arm 
  

   much 
  longer, 
  nearly 
  as 
  long 
  as 
  the 
  rest 
  of 
  the 
  appendage, 
  slender, 
  

   tapering, 
  but 
  bluntly 
  pointed 
  and 
  directed 
  backward 
  and 
  inward, 
  a 
  

   little 
  arched 
  from 
  beneath; 
  subgenital 
  plate 
  narrow 
  and 
  equal 
  except 
  

   for 
  the 
  abrui^t 
  and 
  considerable 
  elevation 
  of 
  the 
  extreme 
  apical 
  margin, 
  

   ■which 
  is 
  mesially 
  notched. 
  Basal 
  tooth 
  of 
  the 
  lower 
  valves 
  of 
  the 
  ovi- 
  

   positor 
  large, 
  triangular, 
  sharp, 
  as 
  long 
  as 
  broad. 
  

  

  Length 
  of 
  body, 
  male 
  15.5 
  mm., 
  female 
  20 
  mm.; 
  antennae, 
  male 
  6.25 
  

   mm., 
  female 
  6.5 
  mm.; 
  tegmina, 
  male 
  10.5 
  mm., 
  female 
  13 
  mm.; 
  hind 
  

   femora, 
  male 
  S.75 
  mm., 
  female 
  10.5 
  mm. 
  

  

  Forty-one 
  males, 
  52 
  females. 
  Medicine 
  Hat, 
  Assiniboia, 
  September 
  

   (U.S.N.M.— 
  Riley 
  collection) 
  ; 
  Fort 
  McLeod, 
  Alberta, 
  September 
  (same); 
  

   Yakima 
  River, 
  opposite 
  Elleusburg, 
  Kittitas 
  County, 
  Washington, 
  S. 
  

   Heushaw 
  (Museum 
  Com]>arative 
  Zoology); 
  Salmon 
  City, 
  Lemhi 
  Counly, 
  

   Idaho, 
  August 
  (U.S.N. 
  M. 
  — 
  Riley 
  collection); 
  Yellowstone, 
  Montana, 
  

   August 
  (same); 
  Mandan, 
  Morton 
  County, 
  North 
  Dakota 
  (same); 
  Doug- 
  

   las, 
  Converse 
  County, 
  Wyoming, 
  Bruner 
  (same); 
  Evanston, 
  Uintah 
  

   County, 
  Wyoming, 
  6,800 
  feet, 
  August 
  6; 
  Cheyenne, 
  Laramie 
  County, 
  

   Wyoming 
  (L. 
  Bruner); 
  Colorado 
  (U.S.N. 
  M. 
  — 
  Riley 
  collection); 
  Colo- 
  

   rado, 
  5,500 
  feet, 
  Morrison; 
  Florissant, 
  P^l 
  Paso 
  County, 
  Colorado, 
  8,(100 
  

   feet, 
  August 
  17-22; 
  South 
  Park, 
  Colorado, 
  8,000 
  to 
  10,000 
  feet, 
  August 
  

   11-16; 
  Garland, 
  Costillo 
  County, 
  Colorado, 
  8,000 
  feet, 
  August 
  28-29; 
  

   Fort 
  Robinson, 
  Dawes 
  County, 
  Nebraska, 
  August 
  21-22, 
  L. 
  Bruner 
  

   (U.S.N.M.— 
  Riley 
  collection). 
  

  

  It 
  has 
  also 
  been 
  reported 
  from 
  Regina, 
  Assiniboia, 
  by 
  Caulfield. 
  

  

  