﻿NO. 
  1956. 
  YALE 
  PERUVIAN 
  EXPEDITION, 
  ORTHOPTERA—CAUDELL. 
  351 
  

  

  margined 
  segments 
  of 
  the 
  thorax 
  and 
  abdomen 
  will 
  readily 
  separate 
  

   these 
  two 
  species. 
  

  

  Male 
  and 
  female. 
  — 
  Head 
  siibquadrate, 
  about 
  as 
  broad 
  as 
  long; 
  

   antennae 
  of 
  the 
  usual 
  stnicture, 
  the 
  basal 
  segment 
  flattened. 
  Pro- 
  

   notum 
  about 
  the 
  same 
  in 
  width 
  and 
  breadth, 
  the 
  mesonotum 
  about 
  

   twice 
  as 
  long 
  as 
  the 
  pronotum 
  and 
  slightly 
  broader; 
  intermediate 
  

   segment 
  obscurely 
  indicated, 
  subequal 
  in 
  length 
  with 
  the 
  metanotum 
  

   from 
  which 
  it 
  is 
  usually 
  separated 
  by 
  a 
  couple 
  of 
  small 
  subdorsal 
  

   transverse 
  light-colored 
  spots. 
  Abdomen 
  moderately 
  swollen 
  in 
  the 
  

   female, 
  in 
  the 
  male 
  parallel 
  sided, 
  the 
  segments 
  transverse, 
  female, 
  

   or 
  quadrate, 
  male. 
  Operculum 
  of 
  female 
  nearly 
  as 
  broad 
  as 
  the 
  

   segment 
  of 
  the 
  abdomen 
  from 
  which 
  it 
  arises, 
  reaching 
  to 
  the 
  tip 
  

   of 
  the 
  last 
  segment 
  and 
  apically 
  slightly 
  acuteangulate; 
  operculum 
  

   of 
  the 
  male 
  large, 
  fully 
  as 
  broad 
  as 
  the 
  last 
  segments 
  of 
  the 
  abdomen. 
  

   Cerci 
  of 
  both 
  sexes 
  simple, 
  short 
  and 
  stout, 
  in 
  the 
  female 
  straight, 
  

   in 
  the 
  male 
  almost 
  straight. 
  All 
  the 
  femora 
  distinctly 
  carinate, 
  

   the 
  anterior 
  one 
  almost 
  straight, 
  at 
  the 
  base 
  very 
  slightly 
  curved; 
  

   tibiae 
  also 
  carinate, 
  the 
  sides 
  sulcate; 
  tibiae 
  generally 
  lighter 
  colored 
  

   beneath 
  and 
  covered 
  with 
  fulvous 
  pile. 
  The 
  whole 
  insect 
  is 
  covered 
  

   with 
  short 
  hairs 
  or 
  pile 
  as 
  is 
  common 
  in 
  the 
  genus. 
  

  

  General 
  color 
  velvet 
  black, 
  the 
  antennae 
  ringed 
  with 
  whitish 
  

   yeUow 
  and 
  the 
  segments 
  of 
  the 
  abdomen 
  and 
  thorax 
  posteriorly 
  

   margined 
  above 
  with 
  white. 
  The 
  tip 
  of 
  the 
  femora 
  is 
  distinctly 
  

   light 
  colored, 
  as 
  is 
  also 
  the 
  base 
  of 
  the 
  tibiae 
  for 
  a 
  very 
  short 
  distance 
  

   and 
  the 
  tip 
  of 
  the 
  tibiae 
  and 
  base 
  of 
  the 
  first 
  tarsal 
  segment 
  is 
  more 
  

   or 
  less 
  whitish. 
  Clypeus 
  also 
  light 
  yello\^dsh. 
  

  

  Length, 
  entire, 
  male, 
  30 
  mm., 
  female, 
  45 
  mm.; 
  antennae, 
  male, 
  

   27 
  mm., 
  female, 
  all 
  but 
  15 
  mm. 
  gone; 
  mesonotum, 
  male, 
  5 
  mm., 
  

   female, 
  8 
  mm.; 
  fore 
  femora, 
  male, 
  9.5 
  mm., 
  female, 
  11 
  mm.; 
  cerci, 
  

   male 
  and 
  female, 
  1 
  .5 
  mm. 
  

  

  Holotype. 
  — 
  One 
  male, 
  Huadquina, 
  Peiii, 
  July 
  26, 
  1911, 
  5,000 
  feet 
  

   altitude. 
  

  

  Allotype. 
  — 
  One 
  female, 
  July 
  30, 
  same 
  locality; 
  one 
  male 
  paratype, 
  

   same 
  data 
  as 
  the 
  holotype. 
  Holotype 
  and 
  allotype, 
  Cat. 
  No. 
  15050; 
  

   U.S.N.M. 
  

  

  FamHy 
  LOCUSTID^. 
  

  

  DASYSCELUS, 
  species. 
  

  

  One 
  immature 
  female. 
  Pampaconas 
  River, 
  August. 
  

   This 
  may 
  be 
  the 
  D. 
  planiusculus 
  of 
  Brunner, 
  but 
  the 
  immature 
  state 
  

   of 
  the 
  only 
  specimen 
  represented 
  prohibits 
  its 
  specific 
  determination. 
  

  

  NANNOTETTIX 
  PALTAYBAMBA, 
  new 
  species. 
  

  

  A 
  species 
  most 
  nearly 
  related 
  to 
  iV. 
  guentheri 
  Brunner 
  and 
  running 
  

   to 
  that 
  species 
  in 
  Bnmner's 
  tables. 
  It 
  differs, 
  however, 
  from 
  guen- 
  

   theri 
  in 
  several 
  particulars, 
  besides 
  being 
  considerably 
  larger. 
  

  

  