﻿294 
  PROCEEDI^^GS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  

  

  tumid, 
  slightly 
  elevated 
  above 
  the 
  pronotum, 
  the 
  interspace 
  between 
  

   the 
  eyes 
  not 
  broad, 
  but 
  much 
  broader 
  than 
  the 
  first 
  anteunal 
  joint 
  j 
  

   fastigium 
  very 
  steeply 
  declivent, 
  deei)ly 
  sulcate 
  throughout; 
  frontal 
  

   costa 
  tailiug 
  to 
  reach 
  the 
  clypeus, 
  slightly 
  contracted 
  above, 
  elsewhere 
  

   fully 
  as 
  broad 
  as, 
  if 
  not 
  broader 
  than, 
  the 
  interspace 
  between 
  the 
  eyes, 
  

   sulcate 
  at 
  and 
  below 
  the 
  ocellus, 
  biseriately 
  punctate 
  above; 
  autennae 
  

   luteo-ferruginous, 
  nowhere 
  infuscated, 
  except 
  sometimes 
  at 
  extreme 
  

   tip, 
  about 
  three-fourths 
  as 
  long 
  as 
  the 
  hind 
  femora. 
  Pronotum 
  sub- 
  

   equal, 
  scarcely 
  expanding 
  on 
  the 
  metazona, 
  the 
  lateral 
  lobes 
  with 
  a 
  

   somewhat 
  obscure, 
  piceous 
  band, 
  crossing 
  the 
  prozona 
  above; 
  disk 
  

   feebly 
  convex, 
  passing 
  by 
  a 
  rounded 
  shoulder, 
  becoming 
  almost 
  a 
  

   lateral 
  carina 
  on 
  the 
  metazona, 
  into 
  the 
  tumid, 
  vertical, 
  lateral 
  lobes; 
  

   median 
  carina 
  distinct 
  on 
  the 
  metazona, 
  feeble 
  and 
  blunt 
  on 
  the 
  pro- 
  

   zona; 
  front 
  margin 
  feebly 
  convex, 
  hind 
  margin 
  almost 
  rectangulate; 
  

   j)rozona 
  quadrate 
  or 
  feebly 
  longitudinal, 
  scarcely 
  or 
  slightly 
  longer 
  

   than 
  the 
  densely 
  punctate 
  metazona. 
  Prosternal 
  spine 
  rather 
  long, 
  

   erect, 
  cylindrical, 
  rather 
  blunt 
  ; 
  interspace 
  between 
  mesosternal 
  lobes 
  

   about 
  half 
  as 
  long 
  again 
  as 
  broad. 
  Tegmina 
  surpassing 
  the 
  hind 
  femora, 
  

   rather 
  slender, 
  gently 
  tapering, 
  well 
  rounded 
  apically, 
  brownish 
  fuscous, 
  

   with 
  very 
  slight, 
  obscure 
  signs 
  of 
  sparse 
  macnlation 
  in 
  the 
  discoidal 
  

   area; 
  wings 
  hyaline, 
  with 
  the 
  anterior 
  and 
  apical 
  veins 
  testaceous. 
  

   Hind 
  femora 
  ferruginous 
  or 
  luteo-ferruginous, 
  sometimes 
  with 
  an 
  oliva- 
  

   ceous 
  tinge, 
  bifasciate 
  above 
  with 
  blackish 
  fuscous, 
  generally 
  obscurely, 
  

   and 
  with 
  a 
  basal 
  spot 
  of 
  the 
  same, 
  the 
  nnder 
  surface 
  hiteous 
  or 
  ferru- 
  

   ginous, 
  the 
  genicular 
  arc 
  black; 
  liind 
  tibiae 
  pale 
  glaucous 
  green, 
  a 
  little 
  

   pallid 
  at 
  the 
  base, 
  with 
  an 
  obscure, 
  fuscous, 
  post-basal 
  annulus, 
  the 
  

   spines 
  black 
  beyond 
  their 
  pallid 
  base, 
  eleven 
  in 
  number 
  in 
  the 
  outer 
  

   series. 
  Extremity 
  of 
  male 
  abdomen 
  clav^ate, 
  somewhat 
  upturned, 
  the 
  

   supraanal 
  plate 
  and 
  furcula 
  as 
  in 
  M. 
  bispinosus; 
  cerci 
  also 
  shaped 
  as 
  

   there, 
  but 
  smaller 
  and 
  slenderer, 
  fully 
  six 
  times 
  as 
  long 
  as 
  the 
  narrow- 
  

   est 
  breadth; 
  subgenital 
  plate 
  narrowing 
  regularly 
  from 
  base 
  to 
  apex, 
  

   much 
  longer 
  than 
  broad, 
  subconical, 
  the 
  apical 
  margin 
  with 
  a 
  hardly 
  

   perceptible 
  elevation, 
  entire, 
  as 
  viewed 
  from 
  above 
  acutangulate, 
  the 
  

   angle 
  blunt 
  and 
  a 
  little 
  thickened. 
  

  

  Length 
  of 
  body, 
  male, 
  21 
  mm.; 
  antennae, 
  mm.; 
  tegmina, 
  17.5 
  mm.; 
  

   hind 
  femora, 
  12.25 
  mm. 
  

  

  Five 
  males. 
  Gulf 
  coast 
  of 
  Texas, 
  Aaron; 
  Carrizo 
  Springs, 
  Dimmit 
  

   County, 
  Texas, 
  Wadgymar, 
  November 
  (L. 
  Bruner). 
  

  

  This 
  species 
  is 
  exceedingly 
  close 
  to 
  A[. 
  his^rinosus, 
  but 
  is 
  smaller, 
  

   darker, 
  a 
  more 
  southern 
  form, 
  and 
  differs 
  by 
  its 
  slightly 
  smaller 
  and 
  

   slenderer 
  cerci, 
  the 
  general 
  characters 
  of 
  the 
  vsubgenital 
  plate 
  and 
  in 
  

   minor 
  peculiarities 
  of 
  its 
  structure. 
  It 
  can 
  be 
  confounded 
  with 
  no 
  

   other 
  species. 
  

  

  