﻿300 
  I'UOCEEDIXaS 
  OF 
  THE 
  XATWXAL 
  MUSEFM. 
  vol.xx. 
  

  

  Length 
  of 
  body, 
  male, 
  15.25 
  mm., 
  female, 
  23 
  mm.; 
  antennae, 
  male, 
  

   10 
  mm., 
  female, 
  8.5 
  mm.: 
  tc\uiuina, 
  male, 
  19.5 
  mm., 
  female, 
  20.5 
  mm.; 
  

   Liiul 
  femora, 
  male, 
  11 
  mm., 
  female, 
  12.25 
  mm. 
  

  

  Two 
  males, 
  .> 
  females. 
  Cape 
  St. 
  Liieas, 
  Lower 
  California, 
  J. 
  Xantus; 
  

   Sonora, 
  Mexieo, 
  C. 
  A. 
  Scliott. 
  

  

  91. 
  MELANOPLUS 
  CANONICUS. 
  new 
  species. 
  

   (Plate 
  XX. 
  lig. 
  1.) 
  

  

  Luteo-testaceoiis 
  with 
  a 
  distinet 
  ferruginous 
  tinge. 
  Head 
  a 
  little 
  

   prominent, 
  llavo-luteons, 
  below 
  with 
  a 
  slight 
  olivaceous 
  tinge, 
  above 
  a 
  

   little 
  streaked 
  with 
  fuscous 
  and, 
  in 
  the 
  male 
  at 
  least, 
  with 
  a 
  dark 
  fus- 
  

   cous 
  postocular 
  baud; 
  vertex 
  a 
  little 
  tumid, 
  a 
  little 
  elevated 
  above 
  the 
  

   pronotum, 
  the 
  interspace 
  between 
  tbe 
  eyes 
  rather 
  narrow, 
  equal 
  to 
  

   (male) 
  or 
  a 
  little 
  exceediug 
  (female) 
  the 
  width 
  of 
  the 
  basal 
  anteunal 
  

   joint; 
  fastigium 
  rather 
  strougl.y 
  deelivent, 
  deeply 
  (male) 
  or 
  shallowly 
  

   (female) 
  sulcate 
  throughout; 
  frontal 
  costa 
  rather 
  prominent 
  above, 
  

   straight 
  on 
  a 
  side 
  view, 
  Just 
  failing 
  to 
  reach 
  the 
  dypeus, 
  equal, 
  a 
  little 
  

   broader 
  than 
  the 
  intersjnice 
  between 
  the 
  eyes, 
  feebly 
  sulcate 
  at 
  and 
  

   below 
  the 
  ocellus, 
  puuctate 
  above, 
  biseriately 
  in 
  the 
  male; 
  eyes 
  pretty 
  

   large, 
  rather 
  prominent 
  in 
  the 
  male, 
  distinctly 
  longer 
  than 
  the 
  infra- 
  

   ocular 
  i)ortion 
  of 
  the 
  genae: 
  antennae 
  luteous, 
  as 
  long 
  as 
  the 
  hind 
  

   feuu)ra 
  in 
  the 
  male. 
  Pronotum 
  subequal, 
  feebly 
  expanding 
  on 
  the 
  

   metazoua, 
  the 
  disk 
  feebly 
  convex 
  and 
  passing 
  by 
  a 
  broadly 
  rounded 
  

   shoulder 
  into 
  the 
  subvertical 
  lateral 
  lobes, 
  which 
  in 
  the 
  male 
  are 
  

   marked 
  on 
  the 
  upper 
  half 
  of 
  the 
  prozona 
  by 
  a 
  slightly 
  mottled, 
  glis- 
  

   tening, 
  brownish 
  fuscous 
  band 
  : 
  median 
  carina 
  distinct 
  on 
  the 
  metazona, 
  

   obsolete 
  on 
  the 
  prozona: 
  front 
  margin 
  subtruncate, 
  hind 
  margin 
  obtus- 
  

   angulate: 
  prozona 
  feebly 
  longitudinal 
  (male) 
  or 
  quadrate 
  (female), 
  

   slightly 
  longer 
  than 
  the 
  closely 
  punctate 
  metazona. 
  Prosternal 
  spine 
  

   rather 
  short, 
  couical, 
  erect, 
  anteriorly 
  appressed: 
  interspace 
  between 
  

   mesosternal 
  lobes 
  more 
  than 
  twice 
  (male) 
  or 
  nearly 
  twice 
  (female) 
  as 
  

   long 
  as 
  broad. 
  Tegmina 
  a 
  little 
  surpassing 
  the 
  hind 
  femora, 
  moder- 
  

   ately 
  slender, 
  gently 
  tai)ering, 
  brownish 
  fuscous, 
  sometimes 
  with 
  a 
  fer- 
  

   ruginous 
  tinge, 
  more 
  or 
  less 
  feebly 
  tiecked 
  with 
  obscure 
  nuiculae 
  in 
  the 
  

   discoidal 
  area: 
  wings 
  [)ellucid, 
  very 
  faintly 
  infuuuited, 
  the 
  veins 
  black 
  

   or 
  blackish 
  fuscous. 
  Fore 
  and 
  middle 
  femora 
  of 
  male 
  feebly 
  tumescent; 
  

   hiud 
  fenu>ra 
  luteo 
  testaceous, 
  bifasciate 
  with 
  pale 
  fusco 
  ferruginous 
  

   above, 
  the 
  outer 
  face 
  feebly 
  infuscated. 
  the 
  lower 
  face 
  luteous, 
  the 
  genic- 
  

   ular 
  arc 
  blackish 
  fuscous: 
  hind 
  tibiae 
  very 
  pale 
  glaucous, 
  i)allescent 
  

   basally, 
  the 
  spines 
  black 
  in 
  their 
  apical 
  half, 
  ten 
  to 
  twelve 
  in 
  number 
  

   in 
  the 
  outer 
  series. 
  Extremity 
  of 
  male 
  abdomen 
  a 
  little 
  clavate 
  and 
  

   recurved, 
  the 
  supraanal 
  plate 
  longer 
  than 
  broad, 
  tapering 
  at 
  tirst 
  

   slightly 
  then 
  rapidly, 
  the 
  apex 
  obtusangulate 
  except 
  for 
  a 
  slight 
  pro- 
  

   duction, 
  the 
  surface 
  nearly 
  plane, 
  the 
  median 
  sulcus 
  slight 
  and 
  incon- 
  

   spicuous: 
  furcula 
  consisting 
  of 
  a 
  pair 
  of 
  adjacent 
  tlattened 
  plates, 
  

   very 
  broad 
  on 
  basal 
  third, 
  then 
  rapiilly 
  contracted, 
  and 
  continuing 
  on 
  

  

  