﻿314 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  

  

  spiue 
  moderately 
  long, 
  appressed 
  cylindrical, 
  rather 
  stout, 
  a 
  little 
  

   retrorse; 
  interspace 
  between 
  mesosternal 
  lobes 
  about 
  twice 
  as 
  long 
  as 
  

   broad 
  (male) 
  or 
  distinctly 
  transverse 
  but 
  narrower 
  than 
  the 
  lobes 
  

   (female), 
  the 
  metasternal 
  lobes 
  attingeut 
  (male) 
  or 
  moderately 
  distant 
  

   (female). 
  Tegmina 
  usually 
  a 
  little 
  surpassing, 
  sometimes 
  hardly 
  attain- 
  

   ing 
  the 
  tips 
  of 
  the 
  hind 
  femora, 
  moderately 
  broad, 
  distinctly 
  tapering 
  

   in 
  the 
  distal 
  half, 
  blackish 
  fuscous 
  with 
  pallid 
  cross- 
  veins, 
  and 
  heavily 
  

   though 
  rather 
  delicately 
  maculate, 
  especially 
  but 
  not 
  exclusively 
  in 
  the 
  

   discoidal 
  area; 
  wings 
  ample, 
  hyaline 
  with 
  the 
  feeblest 
  possible 
  bluish 
  

   flush, 
  the 
  apical 
  and 
  anterior 
  venation 
  fuscous 
  or 
  blackish 
  fuscous. 
  Fore 
  

   and 
  middle 
  femora 
  of 
  male 
  somewhat 
  tumid; 
  hind 
  femora 
  very 
  stout, 
  

   with 
  prominent 
  inferior 
  carina, 
  brownish 
  fuscous 
  with 
  superior 
  cloudy, 
  

   rather 
  broad, 
  dark 
  fasciation, 
  the 
  exterior 
  face 
  more 
  or 
  less 
  testaceous 
  

   clouded 
  irregularly 
  with 
  fuscous, 
  the 
  lower 
  face 
  and 
  lower 
  half 
  of 
  inner 
  

   face 
  bright 
  deep 
  red, 
  including 
  sometimes 
  a 
  part 
  of 
  the 
  lower 
  genicular 
  

   lobes, 
  the 
  rest 
  of 
  the 
  geniculation 
  infuscated; 
  hind 
  tibiae 
  slightly 
  val- 
  

   gate, 
  stout, 
  bright 
  deep 
  red, 
  sometimes 
  feeblj' 
  infuscated 
  at 
  the 
  extreme 
  

   tip, 
  the 
  spines 
  short, 
  black 
  to 
  the 
  base, 
  ten 
  to 
  eleven, 
  usually 
  eleven, 
  iu 
  

   number 
  in 
  the 
  outer 
  series. 
  Extremity 
  of 
  male 
  abdomen 
  strongly 
  

   clavate, 
  considerably 
  recurved, 
  the 
  supraanal 
  plate 
  subtriangular 
  with 
  

   broadly 
  angulate 
  sides 
  and 
  subrectangiilate 
  apex, 
  the 
  surface 
  nearly 
  

   plane, 
  a 
  little 
  depressed 
  in 
  the 
  apical 
  half, 
  with 
  a 
  rather 
  shallow 
  and 
  

   broad, 
  apically 
  narrowing, 
  percurrent 
  median 
  sulcus; 
  furcnla 
  consisting 
  

   of 
  a 
  pair 
  of 
  very 
  slight, 
  short, 
  distant, 
  diverging 
  denticulations 
  lying 
  

   on 
  the 
  outer 
  side 
  of 
  the 
  ridges 
  bordering 
  the 
  median 
  sulcus 
  of 
  the 
  supra- 
  

   anal 
  plate; 
  cerci 
  compressed, 
  considerably 
  incurved 
  or 
  mesially 
  bent 
  

   laminae, 
  hardly 
  three 
  times 
  as 
  long 
  as 
  broad, 
  gradually 
  constricted 
  

   mesially, 
  the 
  apex 
  well 
  rounded 
  but 
  subangulate 
  below, 
  the 
  whole 
  apical 
  

   portion 
  rather 
  deeply 
  sulcate 
  exteriorly, 
  not 
  reaching 
  the 
  tip 
  of 
  the 
  

   supraanal 
  plate; 
  infracercal 
  plates 
  broad, 
  exposed 
  on 
  either 
  side 
  of 
  the 
  

   base 
  of 
  the 
  cerci, 
  narrowing 
  rapidly 
  and 
  extending 
  to 
  the 
  tip 
  of 
  the 
  

   supraanal 
  plate; 
  subgenital 
  plate 
  moderately 
  broad, 
  sube(iual,the 
  apical 
  

   margin 
  well 
  rounded, 
  hardly 
  flaring, 
  mesially 
  subangulate, 
  not 
  elevated, 
  

   entire. 
  

  

  Length 
  of 
  body, 
  male, 
  24^ 
  mm., 
  female, 
  28 
  mm.; 
  antennae, 
  male, 
  11.75 
  

   mm., 
  female, 
  11 
  mm.; 
  tegmina, 
  male, 
  16.5 
  mm., 
  female, 
  22,5 
  mm.; 
  hind 
  

   femora, 
  male, 
  11 
  mm., 
  female, 
  15 
  mm. 
  

  

  Nineteen 
  males, 
  15 
  females. 
  Tlalpan, 
  Mexico, 
  November 
  (L. 
  Bruner) 
  ; 
  

   hills 
  about 
  San 
  Luis 
  Potosi, 
  Mexico, 
  October 
  15, 
  E. 
  Palmer; 
  mount- 
  

   ains 
  twelve 
  leagues 
  east 
  of 
  San 
  Luis 
  Potosi, 
  Mexico, 
  Palmer; 
  Sierra 
  dc 
  

   San 
  Miguelito, 
  San 
  Luis 
  Potosi, 
  Mexico, 
  Palmer; 
  Zacatecas, 
  Mexico, 
  

   November 
  (U.S.N.M. 
  — 
  Riley 
  collection); 
  Sonora, 
  Mexico, 
  Schott; 
  Silver 
  

   City, 
  Grant 
  County, 
  New 
  Mexico, 
  C. 
  H. 
  Marsh 
  (L. 
  Bruner). 
  

  

  