﻿N',,.1124. 
  REVISION 
  OF 
  THE 
  MELANOPLI—SCrDDElL 
  151 
  

  

  prouotum 
  together, 
  sublanceolate, 
  subacuminate, 
  browuish 
  fuscous, 
  tlie 
  

   discoidal 
  area 
  sometimes 
  with 
  feebly 
  alternating 
  darker 
  and 
  lighter 
  

   dashes. 
  Hind 
  femora 
  externally 
  varying 
  from 
  fusco-olivaceous 
  to 
  fiisco- 
  

   testaoeous, 
  the 
  lower 
  and 
  inner 
  faces 
  flavous, 
  the 
  latter 
  as 
  well 
  as 
  the 
  

   inner 
  half 
  of 
  the 
  upper 
  foce 
  barred 
  at 
  base 
  and 
  before 
  and 
  beyond 
  the 
  

   middle 
  with 
  fuscous 
  or 
  blackish 
  fuscous, 
  the 
  outer 
  half 
  of 
  the 
  upper 
  face 
  

   more 
  or 
  less 
  infuscated 
  throughout, 
  the 
  genicular 
  arc 
  black; 
  hind 
  tibiae 
  

   red, 
  the 
  spines 
  black 
  only 
  on 
  their 
  apical 
  half, 
  eleven 
  or 
  twelve 
  in 
  number 
  

   in 
  the 
  outer 
  series. 
  Extremity 
  of 
  male 
  abdomen 
  slightly 
  clavate, 
  much 
  

   upturned, 
  the 
  supraanal 
  plate 
  triangular 
  with 
  straight 
  sides 
  and 
  acute 
  

   apex, 
  the 
  rather 
  broad, 
  deep, 
  median 
  sulcus 
  bounded 
  by 
  very 
  high, 
  

   sharp 
  walls; 
  furcula 
  consisting 
  of 
  a 
  pair 
  of 
  minute, 
  acute 
  denticula 
  

   tions 
  overlying 
  the 
  ridges 
  of 
  the 
  supraanal 
  plate; 
  cerci 
  broad, 
  arcuate, 
  

   especially 
  by 
  the 
  curvature 
  of 
  the 
  lower 
  margin, 
  tapering 
  only 
  in 
  the 
  

   apical 
  half, 
  well 
  rounded 
  apically, 
  much 
  less 
  than 
  twice 
  as 
  long 
  as 
  

   broad, 
  but 
  nearly 
  as 
  long 
  as 
  the 
  supraanal 
  plate, 
  hardly 
  incurved, 
  the 
  

   apical 
  portion 
  feebly 
  sulcate 
  exteriorly 
  ; 
  infracercal 
  plates 
  large, 
  basally 
  

   nearly 
  as 
  broad 
  as 
  the 
  cerci, 
  rapidly 
  narrowing 
  and 
  extending 
  slightly 
  

   beyond 
  the 
  supraanal 
  plate; 
  subgenital 
  plate 
  broad 
  and 
  rather 
  short, 
  

   the 
  lateral 
  margins 
  straight, 
  apically 
  acutely 
  rounded, 
  neither 
  prolonged 
  

   nor 
  elevated. 
  

  

  Length 
  of 
  body, 
  male, 
  14 
  mm., 
  female, 
  20 
  mm.; 
  antennae, 
  male, 
  6.5 
  

   mm., 
  female, 
  7.5 
  mm.; 
  tegmina, 
  male, 
  5 
  mm., 
  female, 
  8.25 
  mm.; 
  hind 
  

   femora, 
  male, 
  9 
  mm., 
  female, 
  11 
  mm. 
  

  

  Two 
  males, 
  1 
  female. 
  Colorado, 
  5,500 
  feet, 
  Morrison 
  (S. 
  Heushaw; 
  

   S. 
  H. 
  Scudder). 
  

  

  9. 
  MELANOPLUS 
  RILEYANUS 
  (new 
  species). 
  

  

  (Plate 
  X, 
  fio-. 
  9.) 
  

   Pezotettix 
  rileyanus 
  McNeill!, 
  MS. 
  

  

  Dark 
  brownish 
  testaceous, 
  with 
  a 
  broad, 
  lateral 
  piceous 
  stripe. 
  Head 
  

   rather 
  piominent, 
  dark 
  testaceous, 
  sometimes 
  with 
  a 
  feeble 
  olivaceous 
  

   tinge, 
  much 
  flecked 
  and 
  punctate 
  with 
  fuscous, 
  above 
  much 
  infus- 
  

   cated; 
  vertex 
  somewhat 
  tumid, 
  distinctly 
  elevated 
  above 
  the 
  pronotum, 
  

   the 
  interspace 
  between 
  the 
  eyes 
  rather 
  narrow, 
  narrower 
  than 
  the 
  first 
  

   antennal 
  joint 
  (male) 
  or 
  rather 
  broad, 
  distinctly 
  broader 
  than 
  that 
  joint 
  

   (female), 
  the 
  fastigium 
  with 
  slight, 
  raised, 
  rounded 
  ridges 
  next 
  the 
  eyes, 
  

   but 
  otherwise 
  scarcely 
  sulcate 
  (female) 
  or 
  distinctly 
  sulcate 
  throughout 
  

   (male) 
  ; 
  frontal 
  costa 
  moderately 
  broad, 
  fully 
  as 
  broad 
  as 
  (male) 
  or 
  rather 
  

   narrower 
  than 
  (female) 
  the 
  interspace 
  between 
  the 
  eyes, 
  subequal, 
  

   strongly 
  punctate 
  throughout, 
  feebly 
  sulcate 
  at 
  and 
  below 
  the 
  ocellus; 
  

   eyes 
  large 
  and 
  moderately 
  prominent, 
  distinctly 
  longer 
  than 
  the 
  infra- 
  

   ocular 
  portion 
  of 
  the 
  genae; 
  antennae 
  luteo 
  testaceous, 
  nearly 
  (male) 
  or 
  

   but 
  little 
  more 
  than 
  half 
  (female) 
  as 
  long 
  as 
  the 
  hind 
  femora. 
  Pronotum 
  

  

  