﻿No.n24. 
  REVISIOX 
  OF 
  THE 
  MELAXOPLl—SCrDDEE. 
  317 
  

  

  punctate 
  with 
  fuscous, 
  especially 
  iu 
  the 
  discoidal 
  area 
  where 
  the 
  puncta 
  

   are 
  aligned 
  with 
  lutescent 
  marks; 
  wings 
  moderately 
  ample, 
  hyaline 
  

   the 
  v^ems 
  pale 
  fuscous, 
  becoming 
  darker 
  anteriorly 
  and 
  apically. 
  Fore 
  

   and 
  middle 
  femora 
  considerably 
  tumid 
  in 
  the 
  male; 
  hind 
  femora 
  stout, 
  

   dull 
  testaceous, 
  very 
  obli(iuely 
  bifasciate 
  with 
  blackish 
  fuscous, 
  except 
  

   beneath, 
  which 
  is 
  flavous; 
  hind 
  tibiae 
  feebly 
  valgate, 
  bright 
  red, 
  the 
  

   short 
  black 
  spines 
  with 
  pallid 
  bases, 
  nine 
  to 
  eleven 
  in 
  number 
  in 
  the 
  outer 
  

   series. 
  Extremity 
  of 
  male 
  abdomen 
  somewhat 
  clavate, 
  a 
  little 
  recurved, 
  

   the 
  supraaual 
  plate 
  subtriaugular 
  with 
  acutangulate 
  apex, 
  nearly 
  plane 
  

   surface, 
  apically 
  stepped 
  by 
  a 
  distinct 
  transverse 
  ridge 
  just 
  beyond 
  the 
  

   middle, 
  the 
  median 
  sulcus 
  broad 
  and 
  shallow 
  in 
  the 
  basal 
  portion, 
  

   narrow 
  beyond; 
  furcula 
  consisting 
  of 
  a 
  pair 
  of 
  slight, 
  distant, 
  parallel 
  

   denticulations 
  lying 
  outside 
  the 
  ridges 
  bounding 
  the 
  median 
  sulcus 
  of 
  

   the 
  supraaiml 
  plate; 
  cerci 
  and 
  infracercal 
  plates 
  entirely 
  as 
  in 
  M. 
  con- 
  

   spersns 
  ; 
  subgenital 
  plate 
  rather 
  narrow, 
  equal, 
  not 
  at 
  all 
  faring, 
  the 
  

   apical 
  margin 
  not 
  at 
  all 
  elevated, 
  well 
  rounded, 
  entire. 
  

  

  Length 
  of 
  body, 
  male, 
  lil 
  mm., 
  female, 
  22.5 
  mm.; 
  antennae, 
  female, 
  

   10 
  mm.; 
  tegmina, 
  male, 
  1G.25 
  mm., 
  female, 
  17.25 
  mm.; 
  hind 
  femora, 
  

   male, 
  11 
  mm., 
  female, 
  12.5 
  mm 
  

  

  Two 
  males, 
  2 
  females. 
  Dakota 
  (U.S.KM.—Eiley 
  collection) 
  ; 
  Gordon, 
  

   Sheridan 
  County, 
  Nebraska, 
  L. 
  Bruner 
  (same). 
  

  

  This 
  species 
  is 
  closely 
  related 
  to 
  the 
  preceding, 
  from 
  which 
  it 
  differs 
  

   in 
  the 
  narrowness 
  of 
  the 
  subgenital 
  plate 
  of 
  the 
  male 
  and 
  the 
  

   difference 
  in 
  the 
  interspace 
  between 
  the 
  mesosternal 
  lobes. 
  Its 
  general 
  

   resemblance 
  is 
  very 
  close. 
  

  

  23. 
  TEXANUS 
  SERIES. 
  

  

  In 
  this 
  not 
  altogether 
  homogeneous 
  group, 
  the 
  prozona 
  of 
  the 
  male 
  

   is 
  longitudinal, 
  generally 
  distinctly 
  longitudinal, 
  and 
  the 
  interspace 
  

   between 
  the 
  mesosternal 
  lobes 
  in 
  the 
  same 
  sex 
  is 
  almost, 
  or 
  fully, 
  or 
  

   even 
  more 
  than, 
  twice 
  as 
  long 
  as 
  broad. 
  With 
  the 
  exception 
  of 
  the 
  first 
  

   species, 
  the 
  hind 
  margin 
  of 
  the 
  pronotum 
  is 
  obtusangulate. 
  The 
  

   antennae 
  are 
  variable. 
  The 
  tegmina 
  are 
  also 
  variable 
  though 
  always 
  

   abbreviate, 
  aud 
  in 
  most 
  of 
  the 
  species 
  are 
  longer 
  than 
  the 
  pronotum 
  

   and 
  overlap, 
  but 
  in 
  the 
  first 
  they 
  are 
  shorter 
  and 
  distant. 
  The 
  hind 
  

   tibiae 
  are 
  red 
  or 
  glaucous 
  and 
  have 
  nine 
  to 
  thirteen 
  spines 
  in 
  the 
  outer 
  

   series. 
  

  

  The 
  supraaual 
  plate 
  is 
  triangular 
  with 
  more 
  or 
  less 
  elevated 
  margins 
  

   and 
  distinct 
  median 
  sulcus; 
  the 
  furcula 
  is 
  reduced 
  to 
  small 
  or 
  even 
  

   minute 
  denticulations; 
  the 
  cerci 
  are 
  large, 
  constricted 
  in 
  the 
  middle 
  

   and 
  again 
  expanded, 
  more 
  or 
  less 
  incurved 
  and 
  sometimes 
  again 
  

   apically 
  bent 
  in 
  the 
  original 
  direction; 
  the 
  subgenital 
  plate 
  is 
  broad, 
  

   generally 
  produced 
  or 
  elevated 
  apically, 
  the 
  margin 
  entire. 
  

  

  There 
  are 
  five 
  S])ecies, 
  all 
  occurring 
  west 
  of 
  the 
  Mississippi, 
  excej't 
  

   one 
  which 
  is 
  found 
  in 
  the 
  upper 
  ^Mississippi 
  region 
  ; 
  of 
  the 
  others 
  two 
  

   occur 
  in 
  Texas 
  (aud 
  one 
  of 
  them 
  in 
  Kansas 
  also), 
  a 
  fourth 
  east 
  of 
  the 
  

  

  