﻿372 
  PROCEEDIXGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.xx. 
  

  

  iu 
  front 
  rather 
  flaring 
  to 
  receive 
  the 
  head, 
  the 
  prozona 
  quadrate 
  (male) 
  

   or 
  distinctly 
  transverse 
  (female), 
  the 
  prosternal 
  spine 
  short, 
  conical, 
  

   and 
  erect, 
  and 
  the 
  interval 
  between 
  the 
  niesosternal 
  lobes 
  relatively 
  

   broad. 
  The 
  tegmiua 
  are 
  fully 
  developed, 
  longer 
  than 
  the 
  hind 
  femora, 
  

   maculate 
  over 
  their 
  whole 
  breadth. 
  The 
  hind 
  femora 
  are 
  twice 
  rather 
  

   narrowly 
  belted 
  with 
  black, 
  and 
  the 
  hind 
  tibiae 
  red, 
  more 
  or 
  less 
  

   obscured. 
  

  

  The 
  supraanal 
  plate 
  of 
  the 
  male 
  is 
  triangular, 
  the 
  furcula 
  very 
  slight 
  

   or 
  wanting, 
  the 
  cerci 
  very 
  large 
  and 
  broad, 
  immensely 
  expanded 
  api- 
  

   cally 
  and 
  flabellate, 
  with 
  convex 
  apical 
  margin, 
  the 
  subgenital 
  plate 
  

   very 
  much 
  prolonged 
  and 
  greatly 
  elevated 
  apically. 
  

  

  The 
  insects 
  are 
  of 
  medium 
  or 
  large 
  size 
  and 
  dark 
  color, 
  much 
  mot- 
  

   tled, 
  and 
  live 
  as 
  far 
  as 
  known 
  only 
  on 
  coniferous 
  trees. 
  Two 
  species 
  

   are 
  known, 
  one 
  from 
  the 
  Southwest, 
  the 
  other 
  over 
  a 
  large 
  part 
  of 
  the 
  

   country 
  east 
  of 
  the 
  Eocky 
  Mountains. 
  

  

  130. 
  MELANOPLUS 
  ARBOREUS, 
  new 
  species. 
  

   (Plate 
  XXV, 
  fig. 
  5.) 
  

  

  Dull 
  grimy 
  olivaceous, 
  heavily 
  spotted 
  and 
  clouded 
  with 
  brownish 
  

   and 
  blackish 
  fuscous, 
  giving 
  it 
  a 
  more 
  or 
  less 
  conspicuously 
  mottled 
  

   appearance. 
  Head 
  very 
  large 
  and 
  exceptionally 
  prominent; 
  in 
  brightest 
  

   specimens 
  livid 
  or 
  dull 
  \)ale 
  flavous, 
  heavily 
  and 
  irregularly 
  flecked 
  with 
  

   very 
  dark 
  olivaceous 
  inclining 
  to 
  blackish 
  fuscous, 
  forming 
  more 
  or 
  less 
  

   well-marked 
  stripes, 
  bordering 
  the 
  upper 
  part 
  of 
  the 
  eyes 
  and 
  following 
  

   the 
  median 
  line 
  of 
  the 
  vertex; 
  vertex 
  tumid; 
  interspace 
  between 
  the 
  

   eyes 
  rather 
  narrow, 
  narrower 
  than 
  the 
  frontal 
  costa; 
  fastigium 
  rapidly 
  

   declivent, 
  sulcate, 
  the 
  sulcation 
  broadening 
  a 
  little 
  anteriorly; 
  frontal 
  

   costa 
  moderately 
  broad, 
  equal, 
  laterally 
  punctate, 
  at 
  and 
  below 
  the 
  

   ocellus 
  sulcate; 
  eyes 
  large, 
  very 
  f)rominent, 
  i^articularly 
  iu 
  the 
  male; 
  

   antennae 
  i>ale 
  flavous, 
  becoming 
  ferruginous 
  apically, 
  infuscated 
  broadly 
  

   and 
  obscurely 
  at 
  intervals 
  throughout, 
  a 
  little 
  longer 
  (male) 
  or 
  a 
  little 
  

   shorter 
  (female) 
  than 
  the 
  hind 
  femora. 
  Pronotum 
  very 
  feebly 
  subsel- 
  

   late, 
  the 
  metazona 
  flaring 
  slightly 
  and 
  the 
  prozona 
  distinctly, 
  though 
  

   over 
  but 
  little 
  space, 
  to 
  receive 
  the 
  head, 
  the 
  front 
  margin 
  faintly 
  con 
  

   vex, 
  the 
  hind 
  margin 
  broadly 
  angulate, 
  the 
  angle 
  broadly 
  rounded, 
  the 
  

   whole 
  brownish 
  fuscous 
  or 
  yellowish 
  brown, 
  more 
  or 
  less 
  mottled 
  

   (except 
  on 
  the 
  metazona) 
  with 
  olivaceous 
  or 
  dull 
  flavous 
  and 
  with 
  fus- 
  

   cous, 
  the 
  latter 
  (sometimes 
  tinged 
  with 
  olivaceous) 
  forming 
  on 
  the 
  

   upper 
  half 
  of 
  the 
  lateral 
  lobes 
  a 
  broad 
  more 
  or 
  less 
  broken 
  band; 
  pro- 
  

   zona 
  gently 
  convex 
  tranversely, 
  passing 
  insensibly 
  into 
  the 
  inferiorly 
  

   vertical 
  lateral 
  lobes, 
  quadrate 
  (male) 
  or 
  distinctly 
  transverse 
  (female), 
  

   a 
  half 
  (male) 
  or 
  a 
  fourth 
  (female) 
  as 
  long 
  again 
  as 
  the 
  metazona, 
  smooth, 
  

   the 
  median 
  carina 
  very 
  feeble, 
  subobsolete 
  between 
  the 
  sulci, 
  but 
  dis- 
  

   tinct 
  though 
  slight 
  on 
  the 
  metazona 
  ; 
  the 
  latter 
  punctate, 
  with 
  feebly 
  

   indicated 
  lateral 
  carinae. 
  Prosternal 
  spine 
  short, 
  conical, 
  bluntly 
  

   pointed, 
  erect; 
  interval 
  between 
  mesosternal 
  lobes 
  slightly 
  longer 
  than 
  

  

  