﻿182 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  Peru 
  and 
  possibly 
  of 
  Bolivia 
  and 
  Ecuador 
  also. 
  Platyphyma 
  is 
  

   found 
  only 
  in 
  the 
  Old 
  World, 
  and 
  hence 
  need 
  not 
  be 
  compared 
  with 
  

   Uruhamha, 
  which 
  latter 
  genus 
  may 
  be 
  separated 
  from 
  Jivarus 
  by 
  the 
  

   following 
  table: 
  

  

  Key 
  for 
  separating 
  the 
  South 
  American 
  Platyphjmata. 
  

  

  Body 
  subfuaiform; 
  front 
  strongly 
  oblique. 
  Antennae 
  16-joiuted. 
  Last 
  ventral 
  seg- 
  

   ment 
  of 
  male 
  abdomen 
  conical, 
  somewhat 
  acute; 
  the 
  cerci 
  compressed 
  and 
  

   with 
  the 
  apex 
  spatulate, 
  truncate. 
  Hind 
  tibiae 
  8-spined 
  on 
  both 
  margins. 
  

  

  Jivarus 
  Giglio-Tos, 
  

  

  Body 
  robust 
  anteriorly, 
  but 
  tapering 
  caudad. 
  Front 
  normal, 
  only 
  perceptibly 
  

   oblique. 
  Antennae 
  18-jointed. 
  Last 
  ventral 
  segment 
  short, 
  the 
  apex 
  rounded; 
  

   the 
  cerci 
  long 
  and 
  slender, 
  the 
  apex 
  pointed. 
  Hind 
  tibiae 
  9-spined 
  on 
  both 
  

   margins 
  Urubamba, 
  new 
  genus. 
  

  

  Two 
  distinct 
  species 
  of 
  the 
  genus 
  are 
  at 
  hand, 
  and 
  both 
  seem 
  to 
  

   be 
  undescribed. 
  They 
  may 
  be 
  separated 
  by 
  the 
  characters 
  given 
  

   in 
  the 
  subjoined 
  synoptic 
  key. 
  

  

  Body 
  more 
  slender, 
  entirely 
  apterous; 
  the 
  pronotum 
  very 
  strongly 
  rugulose; 
  

   the 
  lateral 
  carinse 
  not 
  prominent 
  and 
  much 
  interrupted; 
  the 
  transverse 
  sulci 
  

   not 
  especially 
  profound. 
  Prosternal 
  spine, 
  coarse, 
  short, 
  and 
  blunt. 
  Hind 
  

   femora, 
  at 
  least 
  in 
  the 
  female, 
  provided 
  with 
  fuscous 
  bands, 
  the 
  genicular 
  area 
  

  

  not 
  infuscated. 
  Insect, 
  especially 
  the 
  legs, 
  strongly 
  hirsute 
  aptera, 
  new 
  

  

  species. 
  

  

  Body 
  more 
  robust; 
  the 
  pronotum 
  rugose 
  only 
  at 
  the 
  sides 
  of 
  the 
  anterior 
  lobe, 
  

   the 
  hind 
  lobe 
  coarsely 
  and 
  closely 
  pitted 
  or 
  punctulate; 
  lateral 
  carinae 
  promi- 
  

   nent, 
  but 
  little 
  interrupted; 
  transverse 
  sulci 
  profound. 
  Prosternal 
  spine 
  robust 
  

   and 
  transverse 
  at 
  its 
  base, 
  acuminate. 
  Hind 
  femora 
  without 
  fuscous 
  bands, 
  

   the 
  genicular 
  portion 
  prominently 
  infuscated. 
  Insect 
  scarcely 
  hirsute, 
  even 
  

   on 
  the 
  legs 
  inconspicua, 
  new 
  species. 
  

  

  The 
  species 
  aptera, 
  which 
  is 
  represented 
  by 
  both 
  sexes, 
  may 
  be 
  

   considered 
  as 
  the 
  type 
  of 
  the 
  genus. 
  

  

  URUBAMBA 
  APTERA, 
  new 
  species. 
  

  

  General 
  color 
  pallid, 
  more 
  or 
  less 
  varied 
  on 
  the 
  head 
  back 
  of 
  the 
  

   eyes, 
  on 
  the 
  upper 
  half 
  of 
  the 
  sides 
  of 
  the 
  pronotum, 
  and 
  on 
  the 
  sides 
  

   of 
  the 
  basal 
  abdominal 
  segments 
  with 
  brown 
  or 
  piceous. 
  Possibly 
  

   varying 
  from 
  testaceous 
  to 
  olivaceous 
  in 
  life 
  according 
  to 
  habitat 
  

   and 
  age. 
  Hind 
  femora 
  in 
  the 
  female 
  with 
  traces 
  of 
  fuscous 
  bands 
  

   above 
  and 
  on 
  the 
  outer 
  disk. 
  Lower 
  sulcus 
  reddish 
  purple; 
  hind 
  

   tibise 
  also 
  likewise 
  tinged. 
  

  

  Body 
  rather 
  profusely 
  hirsute 
  throughout; 
  especially 
  is 
  this 
  true 
  

   with 
  reference 
  to 
  the 
  legs 
  and 
  the 
  hind 
  tibiae 
  and 
  tarsi 
  in 
  particular, 
  

   which 
  are 
  clothed 
  with 
  a 
  long 
  pale 
  pile. 
  Head 
  of 
  moderate 
  size, 
  as 
  

   wide 
  above 
  as 
  below, 
  the 
  eyes 
  rather 
  prominent, 
  rounded 
  behind, 
  

   narrowest 
  above, 
  the 
  anterior 
  margin 
  straight, 
  separated 
  at 
  the 
  

   vertex 
  above 
  by 
  a 
  space 
  a 
  little 
  less 
  than 
  the 
  greatest 
  width 
  of 
  the 
  

   frontal 
  costa 
  above 
  the 
  ocellus; 
  the 
  fastigium 
  of 
  the 
  vertex 
  pro- 
  

  

  