﻿392 
  PBOCEEDIXGS 
  OF 
  THE 
  XATIOXAL 
  MUSEUM. 
  volxx. 
  

  

  the 
  anterior 
  and 
  posterior 
  halves 
  of 
  the 
  Literal 
  lobes 
  nearly 
  symmetri- 
  

   cal: 
  disk 
  obsenred 
  with 
  fuscous 
  or 
  dark 
  brown, 
  with 
  ei^ual 
  sides: 
  the 
  

   median 
  carina, 
  which 
  is 
  marked 
  with 
  dark 
  brown 
  and 
  is 
  distinct 
  

   though 
  slight 
  on 
  the 
  metazona. 
  is 
  obsolete 
  on 
  the 
  prozona. 
  represented 
  

   only 
  by 
  the 
  dark 
  line, 
  sometimes 
  faintly 
  impressed 
  : 
  lateral 
  carinae 
  very 
  

   obscure, 
  converging 
  anteriorly, 
  and 
  distinguished 
  by 
  a 
  narrow, 
  dull 
  

   yellow 
  stripe, 
  the 
  rest 
  of 
  the 
  disk 
  and 
  the 
  upper 
  part 
  of 
  the 
  lateral 
  lobes 
  

   being 
  obscurely 
  marked 
  with 
  dusky 
  brown, 
  which 
  on 
  the 
  lateral 
  lobes 
  is 
  

   darkest 
  in 
  the 
  sulci: 
  a 
  distinct 
  longitudinal 
  sulcus, 
  more 
  distinct 
  for 
  its 
  

   deepercolor. 
  unites 
  thetwopercurrent 
  sulci 
  of 
  the 
  lateral 
  lobes 
  in 
  themid- 
  

   dle 
  : 
  anterior 
  margin 
  of 
  the 
  prozoua 
  marked 
  by 
  a 
  submarginal 
  continuous 
  

   sulcus, 
  distinct 
  only 
  on 
  the 
  lateral 
  lobes: 
  posterior 
  border 
  of 
  the 
  meta- 
  

   zona 
  very 
  broadly 
  rounded 
  or 
  subangulate. 
  Prosternal 
  spine 
  straight, 
  

   rather 
  slender, 
  subcouical, 
  bluntly 
  pointed. 
  Tegmina 
  subovate, 
  slightly 
  

   longer 
  than 
  the 
  pronotum 
  in 
  the 
  form 
  /j/('m;u/^/*\ 
  fully 
  half 
  as 
  long 
  as 
  the 
  

   abdomen 
  in 
  the 
  form 
  eniama. 
  t\i]\y 
  as 
  long 
  as 
  and 
  generally 
  much 
  longer 
  

   than 
  the 
  abdomen 
  in 
  the 
  form 
  eoUaris, 
  brownish 
  fuscous, 
  the 
  longitudi- 
  

   nal 
  veins 
  mostly 
  yellowish, 
  and 
  tlecked, 
  priuciiially 
  along 
  the 
  median 
  

   area 
  but 
  also 
  without 
  it. 
  Avith 
  longitudinal 
  series 
  of 
  subquadratc. 
  black- 
  

   ish 
  fuscous 
  spots, 
  the 
  apex 
  subacuminate 
  when 
  abbreviate, 
  well 
  rounded 
  

   when 
  fully 
  developed: 
  wings 
  pellucid 
  with 
  fuscous 
  veins. 
  Pleura 
  with 
  

   an 
  obli(|ue, 
  bright 
  yellow 
  stripe, 
  edged 
  with 
  black 
  above 
  the 
  hind 
  coxae. 
  

   Hind 
  femora 
  luteous, 
  the 
  outer 
  and 
  in 
  part 
  the 
  upper 
  tace 
  marked 
  by 
  

   a 
  large, 
  apical, 
  yellowish-browu 
  spot, 
  a 
  very 
  broad, 
  angulate, 
  transverse 
  

   median 
  band 
  of 
  the 
  same 
  color, 
  and 
  a 
  similar 
  basal 
  band, 
  sometimes 
  

   obsolete 
  or 
  obsolescent, 
  on 
  the 
  lower 
  half: 
  outer 
  arc 
  of 
  upper 
  genicular 
  

   lobes 
  black: 
  tibiae 
  glaucous, 
  yellow 
  on 
  the 
  sides 
  and 
  at 
  extreme 
  base, 
  

   the 
  apical 
  half 
  of 
  the 
  spines 
  black; 
  ai'olium 
  either 
  quadrate^ 
  rather 
  

   narrow, 
  longer 
  than 
  the 
  claws 
  ^malel 
  or 
  obpyriform, 
  small, 
  but 
  little 
  

   more 
  than 
  half 
  as 
  long 
  as 
  the 
  claws 
  (female). 
  Abdomen 
  yellow, 
  the 
  

   sides 
  chafed 
  by 
  the 
  femora 
  dark 
  fuscous 
  ; 
  supraanal 
  plate 
  of 
  male 
  rather 
  

   short 
  triangular, 
  the 
  sides 
  feebly 
  sinuate, 
  the 
  apex 
  acute, 
  the 
  surface 
  

   marked 
  by 
  a 
  pair 
  of 
  deep 
  and 
  broad 
  converging 
  sulci, 
  lying 
  between 
  

   the 
  lateral 
  margins 
  and 
  the 
  thereto 
  parallel, 
  elevated 
  and 
  rather 
  sharp 
  

   ridges, 
  which 
  inclose 
  a 
  deep, 
  triangular, 
  basal 
  sulcus: 
  a 
  slender 
  deli- 
  

   cate 
  median 
  sulcus 
  on 
  apical 
  half: 
  cerci 
  very 
  broadly 
  expanded 
  and 
  

   bullate 
  at 
  the 
  base, 
  tapering 
  rapidly 
  and 
  regularly 
  just 
  beyond 
  the 
  

   middle, 
  beyond 
  less 
  rapidly, 
  forming 
  a 
  delicate, 
  slender, 
  but 
  bluntly 
  

   pointed 
  tip. 
  slightly 
  hooked 
  downward 
  and 
  feebly 
  incurved. 
  

  

  Length 
  of 
  body. 
  male. 
  25 
  mm., 
  female, 
  24 
  mm. 
  : 
  antennae, 
  male 
  and 
  

   female. 
  S.5 
  mm. 
  : 
  tegmina, 
  male, 
  21.5 
  mm., 
  female. 
  23 
  mm. 
  ; 
  hind 
  femora, 
  

   male, 
  14 
  mm., 
  female, 
  10 
  mm. 
  These 
  measurements 
  are 
  taken 
  from 
  the 
  

   form 
  coUaris. 
  

  

  Seventy 
  one 
  males, 
  78 
  females. 
  Boise 
  City, 
  Ada 
  County, 
  Idaho 
  (U.S. 
  

   If.M.); 
  Washington, 
  Morrison 
  (U.S.X.M. 
  : 
  S. 
  Henshaw) 
  La 
  Chappies, 
  

   Yakima 
  County. 
  Washington. 
  July 
  lO 
  (Museum 
  Comparative 
  Zoology); 
  

  

  