﻿300 
  Mr. 
  R. 
  E. 
  Turner 
  on 
  Fossorud 
  Ilgmenopfera. 
  

  

  to 
  the 
  apex 
  ; 
  hypopygium 
  short 
  and 
  not 
  very 
  narrow, 
  pro- 
  

   jecting 
  very 
  little 
  beyond 
  the 
  dorsal 
  segment 
  and 
  truncate 
  

   at 
  the 
  apex. 
  Third 
  abscissa 
  of 
  the 
  radius 
  a 
  lis 
  tie 
  longer 
  

   than 
  the 
  second 
  ; 
  first 
  recurrent 
  nervure 
  received 
  at 
  two- 
  

   thirds 
  from 
  the 
  base 
  of 
  the 
  second 
  cubital 
  cell, 
  second 
  at 
  

   one-fifth 
  from 
  the 
  base 
  of 
  the 
  third 
  cubital 
  cell, 
  the 
  division 
  

   of 
  the 
  first 
  cubital 
  cell 
  incomplete. 
  

  

  Black 
  ; 
  the 
  mandibles 
  at 
  the 
  base, 
  the 
  clypeus 
  (except 
  a 
  

   narrow 
  transverse 
  line 
  near 
  the 
  apex), 
  prouotum 
  (except 
  a 
  

   narrow 
  transverse 
  band 
  on 
  the 
  sides, 
  not 
  nearly 
  reaching 
  the 
  

   middle), 
  a 
  large 
  spot 
  on 
  the 
  mesonotum, 
  tegulse, 
  scutellum 
  

   (except 
  the 
  margins), 
  postscutellum, 
  a 
  broad, 
  undulating, 
  

   transverse 
  band 
  on 
  the 
  median 
  segment, 
  mesopleurae, 
  a 
  band 
  

   broadly 
  interrupted 
  in 
  the 
  middle 
  on 
  dorsal 
  segments 
  2-6, 
  a 
  

   spot 
  on 
  each 
  side 
  on 
  the 
  first 
  dorsal 
  segment, 
  a 
  narrower 
  

   band 
  on 
  ventral 
  segments 
  2-4, 
  the 
  femora 
  beneath 
  and 
  the 
  

   tibiae 
  above 
  bright 
  yellow 
  ; 
  tibias 
  beneath 
  and 
  tarsi 
  testaceous 
  

   brown. 
  Wings 
  hyaline 
  ; 
  nervures 
  testaceous 
  at 
  the 
  base, 
  

   black 
  at 
  the 
  apex. 
  

  

  Length 
  17 
  mm. 
  

  

  Hub. 
  La 
  Paz, 
  Mendoza 
  [Jensen-Haarup) 
  . 
  

  

  On 
  a 
  second 
  specimen 
  the 
  yellow 
  markings, 
  especially 
  on 
  

   the 
  median 
  segment 
  and 
  abdomen, 
  are 
  more 
  developed 
  than 
  

   in 
  the 
  specimen 
  described. 
  

  

  Genus 
  Eucyktothynnus, 
  Turn. 
  

  

  Eucyrtothijmms, 
  Turn.Wytsman's 
  Genera 
  Insectorum, 
  cv. 
  p. 
  '24 
  (1910). 
  

  

  In 
  this 
  genns 
  should 
  be 
  included 
  several 
  species 
  placed 
  

   provisionally 
  in 
  Elaphroptera 
  in 
  my 
  paper, 
  Zool. 
  Jahrb. 
  

   xxix. 
  2, 
  1910, 
  viz. 
  E. 
  rosenbergi, 
  E. 
  anisitsi, 
  E. 
  acutidentata, 
  

   E. 
  obfuscata, 
  and, 
  with 
  much 
  doubt, 
  E. 
  mapirensis 
  and 
  

   E. 
  inferna. 
  E. 
  steinbachii 
  might 
  be 
  included 
  in 
  the 
  genus 
  

   Chrysothymius 
  provisionally, 
  which 
  might 
  also 
  include 
  

   E. 
  bogotana, 
  E. 
  mimula, 
  and 
  probably 
  also 
  E. 
  deserta 
  and 
  

   E. 
  despvnsa, 
  but 
  none 
  of 
  them 
  are 
  very 
  near 
  the 
  typical 
  

   species 
  C. 
  inca, 
  Turn., 
  of 
  which 
  the 
  female 
  is 
  still 
  unknown. 
  

  

  Eucyrtothynnus 
  heymonsi, 
  sp. 
  n. 
  

  

  $ 
  . 
  Niger, 
  ruandibulis, 
  clypeo, 
  marginibus 
  oculorum, 
  pronoto, 
  macula 
  

   magna 
  scutelli, 
  postscutello, 
  segmenti 
  mediani 
  fasciis 
  duabus 
  

   longitudinalibus, 
  maculisque 
  lateralibus 
  segmenti 
  l 
  mi 
  , 
  2 
  ndi 
  , 
  3 
  tii 
  

   quartique 
  flavis 
  ; 
  alis 
  subhyaliuis, 
  nervulis 
  fuscis 
  ; 
  clypeo 
  emar- 
  

   ginato. 
  

  

  Clypeus 
  slightly 
  produced, 
  shallowly 
  emarginate 
  at 
  the 
  

   apex, 
  the 
  emargination 
  not 
  very 
  broad, 
  but 
  extending 
  over 
  

  

  