﻿276 
  PE0CEEDI2^GS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.xx. 
  

  

  laminae, 
  the 
  apical 
  half 
  generally 
  about 
  half 
  as 
  broad 
  as 
  the 
  base, 
  

   arcuate 
  aud 
  with 
  the 
  upper 
  inuer 
  portion 
  of 
  the 
  tip 
  i^roduced. 
  The 
  

   subgenital 
  plate 
  is 
  peculiar 
  for 
  being 
  very 
  broad 
  at 
  base 
  and 
  narrowing 
  

   so 
  as 
  to 
  be 
  at 
  apex 
  only 
  about 
  half 
  as 
  broad 
  as 
  at 
  base 
  (which 
  does 
  not 
  

   show 
  in 
  the 
  figures), 
  the 
  whole 
  lower 
  margin 
  nearly 
  straight 
  while 
  the 
  

   upper 
  is 
  sinuous, 
  the 
  apical 
  margin 
  not 
  elevated, 
  entire 
  (in 
  one 
  species 
  

   very 
  broadly 
  and 
  shallowly 
  emarginate, 
  or 
  rather 
  laterally 
  tuberculate) 
  

   and, 
  as 
  viewed 
  above, 
  broadly 
  rounded. 
  

  

  The 
  species, 
  five 
  in 
  number, 
  are 
  spread 
  all 
  over 
  the 
  continent 
  from 
  

   Atlantic 
  to 
  Pacific, 
  from 
  central 
  Labrador 
  to 
  central 
  Florida, 
  and 
  from 
  

   central 
  Alaska, 
  the 
  Mackenzie 
  River 
  and 
  Hudson 
  Bay 
  to 
  Texas 
  and 
  

   central 
  Mexico; 
  they 
  also 
  extend 
  to 
  high 
  altitudes 
  above 
  the 
  forest 
  line. 
  

   No 
  other 
  series 
  of 
  Melanoplus 
  has 
  quite 
  so 
  wide 
  an 
  area 
  of 
  distribution, 
  

   the 
  bivittatus 
  series, 
  however, 
  approaching 
  it 
  closely. 
  

  

  8i. 
  MELANOPLUS 
  PLUMBEUS. 
  

   (Plate 
  XVIII, 
  fig. 
  8.) 
  

  

  Caloptemis 
  plmnhum 
  Dodge!, 
  Can. 
  Ent., 
  IX 
  (1877), 
  p. 
  112. 
  — 
  Thomas, 
  Eep, 
  U. 
  S. 
  

  

  Ent. 
  Coiiim., 
  I 
  (1878), 
  p. 
  42.— 
  Bruner, 
  ibid., 
  Ill 
  (1883), 
  p. 
  60. 
  

   Melanoplus 
  ^ilumheus 
  Bruner, 
  Bull. 
  Div. 
  Ent. 
  U. 
  S. 
  Dep. 
  Agric, 
  XVIII 
  (1893), 
  

  

  pp. 
  32-33, 
  fig. 
  16; 
  Publ. 
  Nebr. 
  Acad. 
  Sc, 
  III 
  (1893), 
  p. 
  28. 
  

  

  Of 
  medium 
  size, 
  very 
  dark 
  fusco-olivaceous, 
  with 
  bright 
  luteous 
  or 
  

   flavous 
  markings. 
  Head 
  feebly 
  prominent, 
  mostly 
  luteous 
  or 
  flavous, 
  

   more 
  or 
  less 
  infuscated 
  above 
  and 
  especially 
  clouded 
  or 
  flecked 
  with 
  

   fuscous 
  along 
  the 
  lateral 
  margins 
  of 
  the 
  fastigium 
  and 
  i)osterior 
  to 
  

   them, 
  and 
  with 
  a 
  blackish 
  postocular 
  band; 
  vertex 
  somewhat 
  tumid, 
  

   the 
  intersj)ace 
  between 
  the 
  eyes 
  nearly 
  (male) 
  or 
  more 
  than 
  (female) 
  

   half 
  as 
  broad 
  again 
  as 
  the 
  first 
  antennal 
  joint; 
  fastigium 
  steeply 
  decliv- 
  

   ent, 
  feebly 
  exi^anding 
  anteriorly, 
  shallowly 
  sulcate 
  throughout; 
  frontal 
  

   costa 
  somewhat 
  prominent 
  above, 
  slightly 
  contracted 
  between 
  the 
  

   antennae, 
  otherwise 
  subequal 
  and 
  as 
  wide 
  as 
  the 
  interspace 
  between 
  

   the 
  eyes, 
  hardly 
  reaching 
  the 
  clypeus, 
  feebly 
  sulcate 
  at 
  and 
  below 
  the 
  

   ocellus, 
  biseriately 
  punctate 
  throughout; 
  eyes 
  moderately 
  large, 
  not 
  

   very 
  prominent, 
  distinctly 
  longer, 
  especially 
  in 
  the 
  female, 
  than 
  the 
  

   intraocular 
  portion 
  of 
  the 
  genae; 
  antennae 
  more 
  or 
  less 
  ferruginous, 
  

   apically 
  infuscated, 
  less 
  than 
  three-fourths 
  (male) 
  or 
  hardly 
  more 
  than 
  

   one-half 
  (female) 
  as 
  long 
  as 
  the 
  hind 
  femora. 
  Pronotum 
  subequal, 
  very 
  

   feebly 
  and 
  uniformly 
  exi>anding 
  i^osteriorly, 
  especially 
  in 
  the 
  female, 
  

   the 
  disk 
  dark 
  fusco-olivaceous, 
  with 
  a 
  slender, 
  median, 
  flavous 
  stripe 
  

   and 
  more 
  or 
  less 
  distinct 
  lateral 
  stripes 
  of 
  the 
  same 
  upon 
  the 
  carinae, 
  

   expanding 
  upon 
  the 
  metazona, 
  the 
  lateral 
  lobes 
  mostly 
  flavous 
  (some- 
  

   times 
  obscured 
  with 
  fuscous), 
  the 
  i)rozona 
  marked 
  above 
  with 
  a 
  broad 
  

   piceous 
  band; 
  disk 
  nearly 
  plane, 
  passing 
  by 
  abruptly 
  rounded 
  shoul- 
  

   ders, 
  hardly 
  forming 
  true 
  carinae, 
  into 
  the 
  vertical 
  lateral 
  lobes 
  ; 
  median 
  

   carina 
  distinct 
  but 
  slight 
  throughout, 
  hardly 
  less 
  elevated 
  on 
  the 
  pro- 
  

   zona; 
  front 
  margin 
  truncate, 
  hind 
  margin 
  obtusangulate; 
  prozona 
  

  

  