﻿3G8 
  riiocEEDixcrS 
  of 
  the 
  national 
  museum. 
  

  

  ages 
  and 
  in 
  the 
  teginiaa, 
  besides 
  some 
  distinction 
  in 
  the 
  general 
  

   coloration. 
  

  

  Tlie.s[)ecnnens 
  from 
  Grand 
  Junction, 
  Colorado, 
  mentioned 
  al)Ove 
  as 
  in 
  

   lUun^'r's 
  collection, 
  are 
  short 
  winged 
  and 
  indicate 
  occasional 
  dimorphism 
  

  

  in 
  tliis 
  species. 
  

  

  127. 
  MELANOPLUS 
  THOMASI, 
  new 
  species. 
  

   (Plate 
  XXV. 
  lig. 
  1.) 
  

   Melanophis 
  titomasi 
  Bruxer!, 
  MS. 
  

  

  Dark 
  plambeo-olivaceons, 
  the 
  abdomen 
  dark 
  ferruginous. 
  Head 
  

   marked 
  with 
  tiavo-testaceous 
  below 
  and 
  on 
  the 
  inner 
  side 
  of 
  the 
  eyes 
  

   above, 
  above 
  the 
  antennal 
  scrobes, 
  along 
  the 
  lateral 
  edges 
  of 
  the 
  fron- 
  

   tal 
  costa, 
  and 
  in 
  a 
  broad 
  stripe 
  behind 
  the 
  upper 
  part 
  of 
  the 
  eyes, 
  which 
  

   passes 
  backward; 
  vertex 
  gently 
  tumid; 
  interspace 
  between 
  the 
  eyes 
  

   scarcely 
  narrower 
  than 
  the 
  frontal 
  costa, 
  the 
  fastigium 
  broadly 
  and 
  

   rather 
  shallowly 
  salcate 
  in 
  front, 
  the 
  frontal 
  costa 
  broad, 
  equal, 
  deli- 
  

   cately 
  punctate, 
  shallowly 
  sulcate 
  at 
  and 
  below 
  the 
  ocellus; 
  eyes 
  mod- 
  

   erately 
  large, 
  not 
  very 
  prominent, 
  about 
  as 
  long 
  as 
  tlie 
  infraocular 
  

   portion 
  of 
  the 
  genae; 
  antennae 
  reddish 
  becoming 
  infuscated 
  apically, 
  

   a 
  little 
  shorter 
  (male) 
  than 
  the 
  hind 
  femora. 
  Pronotum 
  subequal, 
  

   enlarging 
  a 
  very 
  little 
  posteriorly, 
  the 
  front 
  margin 
  nearly 
  truncate, 
  

   the 
  hind 
  margin 
  very 
  broadly 
  angulate, 
  the 
  disk 
  nearly 
  plane, 
  separated 
  

   by 
  subdistinct 
  but 
  rounded 
  lateral 
  carinae 
  from 
  the 
  subvertical, 
  slightly 
  

   tumid, 
  lateral 
  lobes, 
  the 
  median 
  carina 
  distinct 
  on 
  the 
  metazona, 
  very 
  

   feeble 
  on 
  the 
  prozona, 
  the 
  smooth 
  prozona 
  considerably 
  and 
  ronndly 
  

   emarginate 
  in 
  the 
  middle 
  half 
  behind, 
  distinctly 
  longitudinal, 
  nearly 
  a 
  

   half 
  longer 
  than 
  the 
  closely 
  bnt 
  shallowly 
  punctate 
  metazona, 
  with 
  a 
  

   moderately 
  broad, 
  equal, 
  Havo-testaceons 
  stripe 
  on 
  either 
  side 
  of 
  the 
  

   disk 
  of 
  the 
  whole 
  pronotum, 
  limited 
  by 
  the 
  lateral 
  carinae, 
  the 
  lateral 
  

   lobes 
  nearly 
  uniform 
  dark 
  plumbeo-olivaceous, 
  but 
  deeper 
  in 
  color 
  above 
  

   than 
  below. 
  Prosternal 
  spine 
  stout, 
  rather 
  long, 
  cylindrical, 
  blunt, 
  

   enlarging 
  slightlj^ 
  on 
  apical 
  half 
  as 
  seen 
  from 
  the 
  front. 
  Tegmina 
  not 
  

   reaching 
  the 
  tip 
  of 
  the 
  femora, 
  testaceous 
  with 
  dark 
  veins, 
  a 
  tlavo- 
  

   testaceous 
  stripe 
  following 
  the 
  anal 
  vein; 
  wings 
  pellucid, 
  the 
  veins 
  tes- 
  

   taceous 
  or 
  fasco 
  testaceous, 
  colorless 
  in 
  the 
  lower 
  half 
  of 
  the 
  anal 
  area. 
  

   Femora 
  dark 
  plumbeo-olivaceous, 
  the 
  hmd 
  pair 
  tinged 
  above 
  with 
  fer- 
  

   rnginous, 
  the 
  lower 
  half 
  of 
  the 
  outer 
  side 
  Havous, 
  the 
  inner 
  and 
  lower 
  

   face 
  coralline, 
  with 
  a 
  faint 
  pregenicular 
  llavous 
  annulus 
  more 
  or 
  less 
  

   complete, 
  preceded 
  on 
  the 
  inner 
  side 
  above 
  by 
  a 
  fnscons 
  patch, 
  the 
  

   genicular 
  arc 
  plumbeo 
  fnscons; 
  hind 
  tibiae 
  wholly 
  coral 
  red, 
  the 
  si)ines 
  

   black 
  at 
  the 
  base, 
  eleven 
  in 
  number 
  in 
  the 
  outer 
  series. 
  P^xtremity 
  of 
  

   male 
  abdomen 
  somewhat 
  clavate, 
  rounded, 
  a 
  little 
  upturned, 
  the 
  supra- 
  

   anal 
  plate 
  broad 
  and 
  triangular 
  with 
  sinuate 
  lateral 
  margins, 
  re:;tan- 
  

   gulate 
  apex, 
  nearly 
  plane, 
  bnt 
  with 
  a 
  rather 
  broad 
  and 
  shallow 
  median 
  

   longitudinal 
  salens 
  in 
  the 
  basal 
  half, 
  bordered 
  by 
  rather 
  low 
  walls, 
  and 
  

   a 
  pair 
  of 
  apical, 
  distant 
  and 
  subparallel, 
  short, 
  gently 
  arcuate, 
  slight 
  

  

  