﻿210 
  PMOCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  

  

  less 
  infuscated, 
  the 
  upper 
  face 
  indistinctly 
  bimaculate 
  with 
  fuscous, 
  

   the 
  whole 
  geniculation 
  excepting 
  the 
  lower 
  lobe 
  beyond 
  its 
  base 
  

   blackish; 
  hind 
  tibiae 
  glaucous 
  (pale 
  yellowish 
  in 
  alcoholic 
  specimens), 
  

   the 
  spines 
  black 
  to 
  their 
  base, 
  or 
  excepting 
  the 
  extreme 
  base, 
  ten 
  to 
  

   eleven, 
  rarely 
  twelve, 
  in 
  number 
  iu 
  the 
  outer 
  series. 
  Extremity 
  of 
  

   male 
  abdomen 
  very 
  feebly 
  clavate, 
  scarcely 
  recurved, 
  the 
  supraaual 
  

   plate 
  triangular, 
  about 
  eipially 
  long 
  and 
  broad, 
  the 
  sides 
  straight, 
  the 
  

   tip 
  angulate; 
  furcula 
  consisting 
  of 
  a 
  pair 
  of 
  subapproximate 
  slight 
  

   and 
  equal 
  fingers, 
  bluntly 
  tipped, 
  hardly 
  more 
  than 
  a 
  quarter 
  the 
  

   length 
  of 
  the 
  supraaual 
  plate; 
  cerci 
  very 
  slender, 
  compressed, 
  rapidly 
  

   narrowing 
  at 
  extreme 
  base, 
  beyond 
  equal, 
  slightly 
  and 
  broadly 
  sulcate 
  

   exteriorly, 
  directed 
  backward 
  and 
  a 
  little 
  inward, 
  tapering 
  and 
  bluntly 
  

   rounded 
  at 
  tip, 
  scarcely 
  reaching 
  the 
  tip 
  of 
  the 
  supraaual 
  ijlate; 
  sub- 
  

   genital 
  plate 
  truncato-conical, 
  much 
  broader 
  than 
  long, 
  incurved 
  at 
  

   base, 
  the 
  lateral 
  and 
  apical 
  margins 
  in 
  one 
  plane, 
  entire. 
  

  

  Length 
  of 
  body, 
  male, 
  17.5 
  mm., 
  female, 
  21 
  mm.; 
  antennae, 
  male, 
  

   10.5 
  mm., 
  female, 
  8.5 
  mm.; 
  tegmina, 
  male, 
  1 
  mm., 
  female, 
  -^.5 
  mm.; 
  

   hind 
  femora, 
  male, 
  12.5 
  mm., 
  female, 
  13 
  mm. 
  

  

  Four 
  males, 
  9 
  females. 
  Arizona 
  (U.S.N.M. 
  — 
  Eiley 
  collection; 
  L. 
  

   Bruner) 
  ; 
  San 
  Carlos, 
  Gila 
  County, 
  Arizona, 
  Wheeler's 
  Exp. 
  (U.S.N.M. 
  — 
  

   Eiley 
  collection); 
  Fort 
  Whipple, 
  Yavapai 
  County, 
  Arizona, 
  E. 
  Pal- 
  

   mer; 
  Fort 
  Buchanan, 
  Pima 
  County, 
  Arizona, 
  E. 
  Palmer; 
  Fort 
  Grant, 
  

   Graham 
  County, 
  Arizona 
  (U.S.X.M.— 
  Eiley 
  collection). 
  

  

  See 
  the 
  remarks 
  on 
  this 
  species 
  under 
  Melanoplus 
  humplireysil. 
  The 
  

   specimen 
  from 
  Cape 
  St. 
  Lucas 
  which 
  I 
  referred' 
  to 
  this 
  species 
  does 
  

   not 
  belong 
  to 
  it, 
  but 
  probably 
  to 
  Melanoplus 
  nitidus. 
  

  

  10. 
  IXDIGENS 
  SEEIES. 
  

  

  In 
  this 
  group, 
  consisting 
  of 
  only 
  a 
  single 
  species 
  of 
  medium 
  size, 
  the 
  

   prozona 
  of 
  the 
  male 
  is 
  very 
  longitudinal 
  and 
  the 
  interspace 
  between 
  

   the 
  mesosternal 
  lobes 
  of 
  the 
  same 
  sex 
  only 
  slightly 
  longer 
  than 
  broad. 
  

   The 
  antennae 
  of 
  the 
  male 
  are 
  almost 
  as 
  long 
  as 
  the 
  hind 
  femora. 
  The 
  

   tegmina 
  are 
  abbreviate, 
  about 
  as 
  long 
  as 
  the 
  pronotum, 
  subelliptical 
  

   with 
  rounded 
  apex. 
  The 
  hind 
  tibiae 
  are 
  greenish 
  and 
  have 
  ten 
  to 
  

   twelve 
  spines 
  in 
  the 
  outer 
  series. 
  

  

  The 
  extremity 
  of 
  the 
  male 
  abdomen 
  is 
  hardly 
  clavate 
  and 
  the 
  supra- 
  

   anal 
  plate 
  triangular 
  with 
  distinct 
  median 
  sulcus 
  and 
  mesially 
  notched 
  

   lateral 
  margins 
  ; 
  the 
  furcula 
  consists 
  of 
  a 
  small 
  pair 
  of 
  tapering 
  fingers 
  ; 
  

   the 
  cerci 
  are 
  large 
  and 
  broad, 
  almost 
  equally 
  broad 
  throughout, 
  and 
  

   apically 
  rounded, 
  nearly 
  straight; 
  the 
  subgenital 
  plate 
  is 
  broad 
  and 
  

   short, 
  the 
  apical 
  margin 
  elevated 
  to 
  a 
  blunt 
  tubercle. 
  

  

  The 
  single 
  species 
  occurs 
  in 
  Idaho. 
  

  

  iProc. 
  Bost. 
  Soc. 
  Nat. 
  Hist., 
  XX, 
  p. 
  85. 
  

  

  