﻿206 
  VROCEEDIKOS 
  OF 
  TEE 
  XATIOXAL 
  MUSEUM. 
  vol.xx 
  

  

  the 
  frontal 
  costa; 
  tbe 
  subgeuital 
  i^late 
  is 
  small 
  and 
  subconical 
  or 
  sub- 
  

   pyramidal, 
  the 
  margins 
  lying 
  in 
  one 
  plane 
  and 
  entire. 
  

  

  Three 
  species 
  are 
  known, 
  two 
  in 
  Arizona, 
  and 
  one 
  from 
  near 
  the 
  

   margin 
  of 
  the 
  tropics 
  in 
  western 
  Mexico 
  and 
  Lower 
  California. 
  They 
  

   are 
  rather 
  above 
  the 
  medium 
  and 
  may 
  be 
  of 
  large 
  size. 
  

  

  37. 
  MELANOPLUS 
  HUMPHREYSII. 
  

  

  Pezoteitix 
  Imviphreysu 
  Thomas! 
  (pars), 
  Eep. 
  Geogr. 
  Expl. 
  100th 
  mer., 
  V 
  (1875), 
  p. 
  

   890.— 
  Scudder! 
  (pars), 
  Proc. 
  Bost. 
  Soc. 
  Nat. 
  Hist., 
  XX, 
  1879, 
  p. 
  85; 
  (pars), 
  

   Cent. 
  Orth. 
  (1879), 
  p. 
  74. 
  

  

  The 
  only 
  specimen 
  seen 
  has 
  been 
  in 
  alcohol 
  and 
  the 
  colors 
  are 
  more 
  

   or 
  less 
  bleached; 
  it 
  is 
  brownish 
  testaceous, 
  marked 
  with 
  black. 
  Head 
  

   large, 
  somewhat 
  protuberant, 
  without 
  markings 
  except 
  a 
  slender 
  black 
  

   line 
  behind 
  the 
  eye 
  ; 
  vertex 
  somewhat 
  tumid 
  and 
  a 
  little 
  elevated 
  above 
  

   the 
  i)ronotum, 
  sharply 
  punctate 
  except 
  in 
  a 
  posteriorly 
  broadening 
  

   mesial 
  band 
  which 
  was 
  probably 
  darker 
  colored, 
  the 
  interspace 
  between 
  

   the»eyes 
  much 
  broader 
  (a 
  little 
  distorted 
  in 
  the 
  specimen) 
  than 
  the 
  first 
  

   an 
  tennal 
  joint; 
  fastigium 
  rather 
  steeply 
  declivent, 
  rather 
  narrow, 
  sul- 
  

   cate, 
  biseriately 
  punctate; 
  frontal 
  costa 
  rather 
  prominent 
  above, 
  fading 
  

   before 
  theclypeus, 
  much 
  broader 
  than 
  the 
  interspace 
  between 
  the 
  eyes, 
  

   equal, 
  shallowly 
  sulcate 
  excepting 
  above, 
  sparsely 
  punctate; 
  eyes 
  of 
  

   moderate 
  size, 
  not 
  prominent, 
  about 
  as 
  long 
  as 
  the 
  intraocular 
  portion 
  

   of 
  the 
  geuae; 
  antennae 
  testaceous, 
  apically 
  infuscated, 
  less 
  than 
  two- 
  

   thirds 
  (female) 
  as 
  long 
  as 
  the 
  hind 
  femora. 
  Pronotum 
  very 
  regularly 
  

   and 
  feebly 
  enlarging 
  posteriorly, 
  the 
  upper 
  half 
  of 
  the 
  lateral 
  lobes 
  of 
  

   the 
  prozona 
  with 
  a 
  very 
  large, 
  posteriorly 
  narrowing, 
  piceous 
  patch, 
  

   nearly 
  split 
  in 
  two 
  subequal 
  portions 
  by 
  a 
  wedge 
  of 
  ih& 
  basal 
  color 
  

   extending 
  obliquely 
  upward 
  from 
  the 
  lower 
  anterior 
  corner, 
  and 
  nar- 
  

   rowly 
  edged 
  above 
  on 
  the 
  disk 
  by 
  a 
  pallid 
  tint; 
  disk 
  transversely 
  con- 
  

   vex, 
  passing 
  by 
  a 
  very 
  rounded 
  and 
  scarcely 
  perceptible 
  angle 
  into 
  the 
  

   very 
  steeply 
  declivent 
  and 
  interiorly 
  vertical 
  lateral 
  lobes, 
  with 
  no 
  lateral 
  

   carinae; 
  median 
  carina 
  percurrent, 
  feeble 
  on 
  the 
  metazona. 
  coarse 
  and 
  

   rather 
  prominent 
  on 
  the 
  prozona; 
  front 
  margin 
  truncate 
  but 
  feebly 
  and 
  

   narrowly 
  flaring; 
  hind 
  margin 
  roundly, 
  broadly 
  and 
  feebly 
  emarginate; 
  

   disk 
  of 
  prozona 
  very 
  coarsely 
  punctate, 
  quadrate, 
  fully 
  a 
  third 
  as 
  long- 
  

   again 
  as 
  the 
  strongly 
  transverse, 
  finely 
  punctate 
  metazona. 
  Prosternal 
  

   spine 
  short, 
  conical, 
  blunt; 
  interspace 
  between 
  mesosternal 
  lobes 
  

   (female) 
  distinctly 
  transverse, 
  narrower 
  than 
  the 
  lobes. 
  Tegmina 
  

   abbreviate, 
  shorter 
  than 
  the 
  pronotum, 
  lateral, 
  widely 
  separated, 
  

   enlarging 
  from 
  the 
  base 
  to 
  the 
  middle, 
  beyond 
  equal, 
  apically 
  rounded, 
  

   several 
  times 
  longer 
  than 
  broad, 
  black 
  on 
  ground 
  with 
  testaceous 
  veins. 
  

   Hind 
  femora 
  brownish 
  testaceous 
  on 
  upper 
  half, 
  its 
  lower 
  limit 
  infus- 
  

   cated 
  on 
  the 
  outer 
  face, 
  pallid 
  on 
  lower 
  half, 
  the 
  genicular 
  arc 
  black; 
  

   hind 
  tibiae 
  pale 
  testaceous, 
  the 
  spines 
  black 
  tipped, 
  nine 
  to 
  ten 
  in 
  num- 
  

   ber 
  in 
  the 
  outer 
  series. 
  Supraanal 
  plate 
  of 
  male 
  "bicariuate 
  longitudi- 
  

   nally"; 
  cerci 
  '"flat 
  and 
  enlarged 
  at 
  the 
  base 
  and 
  apex, 
  the 
  apical 
  

  

  