﻿106 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MVSEUM. 
  vouxx. 
  

  

  joint, 
  rather 
  broader 
  in 
  the 
  female 
  than 
  in 
  the 
  male; 
  fastiglum 
  shal- 
  

   lowly 
  silicate, 
  subequal, 
  the 
  bounding 
  walls 
  low 
  and 
  coarse; 
  frontal 
  

   costa 
  subeqnal, 
  expanding" 
  at 
  the 
  base, 
  very 
  slightly 
  sulcate 
  above, 
  

   more 
  snlcate 
  but 
  not 
  deeply 
  below 
  the 
  ocellus, 
  as 
  broad 
  as 
  the 
  inter- 
  

   space 
  between 
  the 
  eyes, 
  sparsely, 
  coarsely, 
  and 
  biseriately 
  punctate; 
  

   antennae 
  about 
  five 
  eighths 
  as 
  long 
  as 
  the 
  hind 
  femora, 
  slightly 
  longer 
  

   In 
  the 
  male 
  than 
  in 
  the 
  female. 
  Pronotum 
  very 
  short 
  and 
  stout, 
  sim- 
  

   ple, 
  exi)aiiding 
  a 
  little 
  on 
  the 
  metazona; 
  prozona 
  quadrate 
  (male) 
  or 
  

   transverse 
  (female), 
  of 
  the 
  same 
  length 
  as 
  the 
  metazona; 
  front 
  margin 
  

   truncate, 
  hind 
  margin 
  gently 
  angulated, 
  more 
  prominently 
  in 
  the 
  female 
  

   than 
  in 
  the 
  male; 
  median 
  carina 
  distinct 
  but 
  dull 
  and 
  equal 
  on 
  the 
  

   metazona, 
  obsolete 
  on 
  the 
  i)rozona; 
  transverse 
  sulci 
  of 
  the 
  prozona 
  

   unusually 
  distinct, 
  continuous; 
  lateral 
  carinae 
  distinct 
  but 
  rounded; 
  

   disc 
  punctate, 
  distantly 
  and 
  rather 
  faintly 
  on 
  the 
  prozona, 
  abundantly 
  

   and 
  rather 
  coarsely 
  but 
  still 
  faintly 
  on 
  the 
  metazona. 
  Prosternal 
  spine 
  

   short, 
  stout, 
  appressed 
  conical, 
  blunt, 
  in 
  the 
  female 
  subtransverse; 
  

   interspace 
  between 
  mesosternal 
  lobes 
  fully 
  half 
  as 
  broad 
  again 
  as 
  long- 
  

   (male) 
  or 
  nearly 
  twice 
  as 
  broad 
  as 
  long 
  (female), 
  the 
  metasternal 
  lobes 
  

   approximate 
  (male) 
  or 
  distant 
  (female). 
  Tegmina 
  short 
  subfusiform, 
  

   scarcely 
  longer 
  than 
  the 
  pronotum, 
  about 
  twice 
  as 
  long 
  as 
  broad, 
  the 
  

   extremity 
  produced 
  but 
  rounded, 
  the 
  inner 
  edges 
  not 
  or 
  faintly 
  over- 
  

   lapping. 
  Extremity 
  of 
  male 
  abdomen 
  clavate, 
  considerably 
  recurved, 
  

   the 
  supraanal 
  plate 
  triangular, 
  i^erhaps 
  a 
  little 
  longer 
  than 
  broad, 
  the 
  

   sides 
  straight, 
  the 
  tip 
  rounded, 
  the 
  surface 
  subgibbose; 
  furcula 
  con- 
  

   sisting 
  of 
  a 
  pair 
  of 
  minute, 
  triangular, 
  blunt, 
  rather 
  distant 
  teeth; 
  

   cerci 
  simple, 
  regularly 
  conical, 
  compressed 
  at 
  base, 
  blunt-tipped, 
  con- 
  

   siderabl}^ 
  shorter 
  than 
  the 
  supraanal 
  plate; 
  subgenital 
  plate 
  sharply 
  

   upturned 
  and 
  tumid, 
  short 
  conical, 
  several 
  times 
  longer 
  than 
  broad, 
  the 
  

   extremity 
  just 
  below 
  the 
  entire 
  apical 
  edge 
  produced 
  to 
  a 
  blunt 
  point. 
  

  

  The 
  general 
  color 
  is 
  blackish 
  griseous, 
  very 
  obscurely 
  mottled 
  with 
  

   testaceous 
  above, 
  dirty 
  yellow 
  tinged 
  with 
  ferruginous 
  below; 
  anten- 
  

   nae 
  pale 
  red 
  at 
  base, 
  much 
  infuscated 
  beyond; 
  a 
  quadrate 
  piceous 
  

   patch 
  occupies 
  the 
  upper 
  part 
  of 
  the 
  lateral 
  lobes 
  ui)on 
  the 
  prozona, 
  

   followed 
  immediately 
  below 
  by 
  a 
  paler 
  tint, 
  and 
  occasionally 
  edged 
  on 
  

   the 
  lateral 
  carinae 
  with 
  dull 
  testaceous. 
  Tegmina 
  with 
  some 
  of 
  the 
  

   veins 
  of 
  the 
  dorsal 
  field 
  (for 
  the 
  anterior 
  field 
  is 
  deflected) 
  testaceous. 
  

   Hind 
  femora 
  testaceous, 
  conspicuously 
  marked 
  with 
  black 
  at 
  base 
  and 
  

   tip, 
  and 
  by 
  two 
  moderately 
  broad 
  transverse 
  bands, 
  the 
  premedian 
  

   angulate; 
  hind 
  tibiae 
  pale 
  red, 
  marked 
  with 
  fuscous 
  toward 
  the 
  base, 
  

   the 
  spines 
  black, 
  ten 
  to 
  twelve, 
  usually 
  ten, 
  in 
  the 
  outer 
  series. 
  

  

  Length 
  of 
  body, 
  male, 
  14.5 
  mm., 
  female, 
  21 
  mm.; 
  antennae, 
  male 
  and 
  

   female, 
  5.5 
  mm.; 
  tegmina, 
  male, 
  1 
  mm., 
  female, 
  5 
  mm.; 
  hind 
  femora, 
  

   male, 
  8 
  mm. 
  female, 
  8.8 
  mm. 
  

  

  Thirty 
  males, 
  28 
  females. 
  Colorado, 
  Morrison, 
  13,000 
  feet 
  (S. 
  Hen 
  

   shaw; 
  S. 
  H. 
  Scudder); 
  Colorado, 
  alpine, 
  September 
  (U.S.N.M. 
  — 
  Riley 
  

   collection); 
  Tikes 
  Peak, 
  Colorado, 
  12,000 
  to 
  13,000 
  feet, 
  August 
  24 
  (S. 
  

  

  