﻿RESULTS 
  OF 
  THE 
  YALE 
  PERUVIAN 
  EXPEDITION 
  OF 
  1911. 
  

   ORTIIOPTERA 
  (EXCLUSIVE 
  OF 
  ACRIDIIDiE). 
  

  

  By 
  A. 
  N. 
  Caudell, 
  

  

  Of 
  the 
  Bureau 
  of 
  Entomology, 
  United 
  States 
  Department 
  of 
  Agriculture. 
  

  

  The 
  Peruvian 
  localities 
  mentioned 
  in 
  this 
  paper 
  are 
  for 
  the 
  most 
  

   part 
  absent 
  from 
  printed 
  maps 
  and 
  geographical 
  indices. 
  Most 
  of 
  the 
  

   Orthoptera 
  taken 
  by 
  the 
  expedition 
  were 
  collected 
  at 
  a 
  few 
  localities 
  

   in 
  southeastern 
  Peru. 
  Pampaconas 
  River, 
  a 
  locality 
  given 
  for 
  a 
  

   goodly 
  number 
  of 
  species, 
  is 
  an 
  uncharted 
  stream 
  flowing 
  between 
  

   the 
  Urubamba 
  and 
  Apurimac 
  Rivers. 
  

  

  By 
  previous 
  agreement 
  representatives 
  of 
  all 
  Orthoptera 
  taken 
  by 
  

   the 
  expedition 
  and 
  the 
  types 
  of 
  all 
  new 
  species 
  are 
  deposited 
  m 
  the 
  

   United 
  States 
  National 
  Museum. 
  

  

  Family 
  BLATTID^. 
  

  

  CHORISONEURA 
  PERUANA, 
  new 
  species. 
  

  

  Allied 
  to 
  C. 
  pellucida 
  Saussure, 
  from 
  Mexico. 
  

  

  Male. 
  — 
  Color 
  a 
  nearly 
  uniform 
  brownish 
  yellow, 
  the 
  disk 
  of 
  the 
  

   pronotum 
  with 
  the 
  underlying 
  part 
  of 
  the 
  thorax 
  showing 
  through 
  

   as 
  a 
  darker 
  central 
  portion. 
  Pronotum 
  broadly 
  rounded 
  anteriorly 
  

   and 
  behind 
  almost 
  truncate. 
  Elytra 
  extendmg 
  much 
  beyond 
  the 
  tip 
  

   of 
  the 
  abdomen; 
  wings 
  with 
  an 
  apical 
  area 
  about 
  as 
  long 
  as 
  broad 
  

   acuteangulate 
  basally 
  and 
  apically 
  extending 
  barely 
  beyond 
  the 
  tip 
  

   of 
  the 
  costal 
  field, 
  broadly 
  rounded 
  and 
  faintly 
  notched 
  mesially. 
  

   Supraanal 
  plate 
  broadly 
  transverse 
  and 
  very 
  obtuseangulate 
  apically; 
  

   subgenital 
  plate 
  small 
  and 
  succeeded 
  by 
  a 
  pair 
  of 
  upwardly 
  directed, 
  

   basally 
  broadened 
  styles. 
  Legs 
  slender, 
  the 
  femora 
  unarmed 
  be- 
  

   neath 
  except 
  with 
  short 
  bristles. 
  

  

  Length, 
  entire 
  from 
  front 
  of 
  head 
  to 
  tip 
  of 
  elytra, 
  13 
  mm.; 
  prono- 
  

   tum, 
  2 
  mm.; 
  elytra, 
  11 
  mm. 
  

  

  Type. 
  — 
  One 
  male, 
  Huadquina, 
  July 
  31, 
  5,000 
  feet 
  altitude. 
  Cat. 
  

   No. 
  15046, 
  U.S.N.M. 
  

  

  Proceedings 
  U. 
  S. 
  National 
  Museum, 
  Vol. 
  44-No. 
  1956. 
  

  

  347 
  

  

  