﻿330 
  PROCEEDINCrS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.xx. 
  

  

  109. 
  MELANOPLUS 
  MARGINATUS. 
  

  

  (Plates 
  I, 
  tig. 
  l; 
  XXII, 
  fig. 
  5.) 
  

  

  Pezotettix 
  manjinatus 
  Scudder!, 
  Auu. 
  Rep. 
  Chief 
  Eng., 
  1876 
  (1876), 
  p. 
  504; 
  

  

  Anu. 
  Rep. 
  U. 
  S. 
  Geogr. 
  Snrv. 
  lOOtli 
  Mer., 
  1876 
  (1876), 
  p. 
  284 
  ; 
  Bruner, 
  Rep. 
  

  

  U. 
  S. 
  Ent. 
  Comm., 
  Ill, 
  p. 
  59 
  (1883). 
  

   Euprepocnemis 
  occidentalis 
  Bruner!, 
  MS. 
  

  

  Of 
  medium 
  size, 
  sleuder. 
  Head 
  not 
  prominent, 
  bnt 
  slightly 
  pro- 
  

   jecting, 
  the 
  face 
  retreating 
  more 
  than 
  usual, 
  nearly 
  at 
  right 
  angles 
  with 
  

   the 
  not 
  very 
  steeply 
  declivent 
  fastigium; 
  vertex 
  very 
  gently 
  tumid, 
  

   scarcely 
  elevated 
  above 
  the 
  pronotum, 
  the 
  interspace 
  between 
  the 
  eyes 
  

   a 
  little 
  broader 
  than 
  (male) 
  or 
  twice 
  as 
  broad 
  as 
  (female) 
  the 
  first 
  

   antennal 
  joint; 
  fastigium 
  rather 
  deeply 
  (male) 
  or 
  slightly 
  (female) 
  sul- 
  

   cate; 
  frontal 
  costa 
  percurrent, 
  equal, 
  about 
  as 
  wide 
  as 
  the 
  interspace 
  

   between 
  the 
  eyes, 
  shallowly 
  sulcate 
  at 
  and 
  below 
  the 
  ocellus, 
  punctate 
  

   throughout; 
  eyes 
  not 
  very 
  large, 
  moderately 
  prominent 
  in 
  the 
  male 
  

   only, 
  a 
  little 
  longer, 
  especially 
  in 
  the 
  male, 
  than 
  theinfraocular 
  ])orti()u 
  

   of 
  the 
  genae; 
  antennae 
  at 
  least 
  three-fourths 
  (male) 
  or 
  about 
  four- 
  

   sevenths 
  (female) 
  as 
  long 
  as 
  the 
  hind 
  femora. 
  Pronotum 
  rather 
  long, 
  

   the 
  dorsum 
  equal, 
  with 
  slightly 
  sloping 
  sides, 
  distinct 
  but 
  rather 
  slight 
  

   and 
  equal 
  median 
  carina, 
  and 
  distinct 
  though 
  very 
  obtuse 
  lateral 
  car'- 
  

   nae; 
  hind 
  border 
  scarcely 
  angulate. 
  Prosternal 
  spine 
  rather 
  small, 
  

   bluntly 
  subconical, 
  a 
  little 
  retrorse; 
  interspace 
  between 
  mesosternal 
  

   lobes 
  more 
  than 
  twice 
  as 
  long 
  as 
  broad 
  (male) 
  or 
  a 
  little 
  longer 
  than 
  

   broad 
  (female). 
  Tegmina 
  either 
  surpassing 
  considerably 
  the 
  hind 
  

   femora, 
  moderately 
  broad, 
  subequal 
  beyond 
  the 
  basal 
  expansion 
  of 
  the 
  

   costa, 
  well 
  rounded 
  apically 
  [M. 
  m. 
  amplus, 
  Plate 
  I, 
  fig. 
  i), 
  or 
  slightly 
  

   longer 
  than 
  the 
  pronotum, 
  ovate 
  lanceolate, 
  apically 
  acuminate, 
  over- 
  

   lapping, 
  the 
  costal 
  margin 
  very 
  strongly 
  arcuate, 
  about 
  twice 
  as 
  long 
  

   as 
  broad 
  {M. 
  m. 
  pauper), 
  brownish 
  testaceous; 
  wings 
  a 
  little 
  shorter 
  

   than 
  the 
  tegmina, 
  ample, 
  faintly 
  infumate 
  apically 
  and 
  anteriorly, 
  the 
  

   veins 
  and 
  cross 
  veins 
  black 
  or 
  blackish 
  luscous. 
  Fore 
  and 
  middle 
  

   femora 
  considerably 
  tumid 
  in 
  the 
  male; 
  hind 
  femora 
  rather 
  slender, 
  

   compressed; 
  hind 
  tibiae 
  with 
  eleven 
  to 
  thirteen 
  spines 
  in 
  the 
  outer 
  

   series. 
  Extremity 
  of 
  male 
  abdomen 
  clavate, 
  somewhat 
  recurved, 
  the 
  

   supraanal 
  plate 
  triangular, 
  the 
  apex 
  acutangulate 
  but 
  blunt, 
  the 
  sur- 
  

   face 
  tectate 
  with 
  a 
  moderately 
  deep 
  and 
  narrow 
  median 
  sulcus 
  in 
  the 
  

   basal 
  two 
  thirds; 
  furcula 
  consisting 
  of 
  a 
  pair 
  of 
  slight 
  but 
  coarse 
  

   approximate 
  denticulations; 
  cerci 
  straight, 
  rather 
  stout, 
  moderately 
  

   long, 
  noticeably 
  but 
  broadly 
  constricted 
  in 
  the 
  middle, 
  the 
  tip 
  larger 
  

   than 
  the 
  base, 
  gibbous, 
  the 
  whole 
  scarcely 
  depressed, 
  curving 
  slightly 
  

   downward 
  beyond 
  the 
  middle; 
  subgeuital 
  plate 
  small, 
  subconical, 
  

   ending 
  in 
  a 
  minute 
  tubercle. 
  

  

  General 
  color 
  dull 
  pale 
  olivaceous 
  brown, 
  slightly 
  darker 
  above, 
  with 
  

   a 
  broad 
  black 
  stripe, 
  occasionally 
  obsolescent, 
  extending 
  from 
  behind 
  

   the 
  eye 
  along 
  the 
  upper 
  half 
  of 
  the 
  lateral 
  lobes 
  of 
  the 
  prozona; 
  pleura 
  

  

  