﻿438 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.96 
  

  

  present; 
  postpectus 
  not 
  defined; 
  scutelliim, 
  subalar 
  tubercles, 
  and 
  

   metapleura 
  more 
  or 
  less 
  convex 
  but 
  not 
  inflated; 
  scutellum 
  rarely 
  

   completely 
  margined; 
  propodeum 
  (pi. 
  52, 
  fig. 
  43) 
  excarinate 
  to 
  com- 
  

   pletely 
  areolated, 
  not 
  produced 
  over 
  hind 
  coxae, 
  basal 
  constriction 
  

   neither 
  especially 
  deep 
  nor 
  especially 
  long, 
  divided 
  into 
  a 
  median 
  and 
  

   two 
  lateral 
  foveae; 
  frenum 
  much 
  shorter 
  medially 
  than 
  basal 
  area. 
  

   Wings 
  (pi. 
  53, 
  fig. 
  51) 
  without 
  fenestra 
  or 
  scleromes, 
  though 
  fre- 
  

   quently 
  with 
  a 
  hairless 
  area 
  below 
  base 
  of 
  stigma; 
  stigma 
  elongately 
  

   triangular, 
  tapering 
  evenly 
  from 
  radius 
  to 
  apex, 
  radius 
  at 
  or 
  beyond 
  

   basal 
  third; 
  basal 
  vein 
  and 
  basal 
  portion 
  of 
  discocubitus 
  usually 
  

   convergent 
  toward 
  anterior 
  margin; 
  basal 
  abscissa 
  of 
  radius 
  straight, 
  

   not 
  thickened 
  basally, 
  apical 
  abscissa 
  sinuous 
  or 
  straight, 
  rarely 
  curving 
  

   forward 
  at 
  base; 
  abscissula 
  curved 
  basally; 
  nervellus 
  broken 
  from 
  

   slightly 
  below 
  to 
  distinctly 
  above 
  middle, 
  upper 
  abscissa 
  perpendic- 
  

   ular. 
  Legs 
  stout 
  to 
  very 
  slender; 
  apical 
  joint 
  of 
  front 
  tarsus 
  and 
  all 
  

   claws 
  (pi. 
  55, 
  fig. 
  81) 
  normal 
  in 
  form. 
  

  

  Abdomen 
  (pi. 
  56, 
  fig. 
  94) 
  : 
  Tergite 
  2 
  with 
  umbo 
  distinct, 
  spiracles 
  at 
  

   or 
  near 
  middle, 
  rarely 
  far 
  before 
  or 
  distinctly 
  behind 
  middle, 
  epipleura 
  

   distinctly 
  separated 
  throughout; 
  ovipositor 
  not 
  exserted. 
  

  

  8. 
  Genus 
  RHOPALOPHION 
  Seyrig 
  

  

  Plate 
  55, 
  Figure 
  71 
  

  

  Rhopalophion 
  Seyrig, 
  Mus. 
  Nat. 
  Hist. 
  Nat., 
  Mission 
  Scientifique 
  de 
  I'Omo, 
  

   vol. 
  3, 
  Zool., 
  fasc. 
  18, 
  Hym. 
  2, 
  Ichneumonidae, 
  p. 
  49, 
  1935. 
  [Genotype: 
  

   Rhopalophion 
  curvus 
  Seyrig.] 
  Monobasic 
  and 
  designated. 
  

  

  Described 
  from 
  four 
  African 
  species, 
  only 
  one 
  of 
  which 
  is 
  named. 
  

   This 
  genus 
  is, 
  I 
  think, 
  not 
  distinct 
  from 
  Ophion, 
  though 
  lacking 
  a 
  

   specimen 
  I 
  prefer 
  not 
  to 
  synonymize 
  it. 
  The 
  most 
  conspicuous 
  char- 
  

   acter 
  and 
  the 
  one 
  on 
  which 
  the 
  genus 
  was 
  principally 
  founded, 
  the 
  

   course 
  of 
  the 
  discocubitus 
  (pi. 
  55, 
  fig. 
  71), 
  is 
  very 
  doubtfully 
  of 
  generic 
  

   significance. 
  The 
  one 
  character 
  mentioned 
  that 
  deters 
  me 
  from 
  syn- 
  

   onymizing 
  the 
  genus 
  is 
  described 
  as 
  follows: 
  *'2e 
  abscisse 
  radiale 
  des 
  

   ailes 
  posterieures 
  droites 
  ou 
  tres 
  legerement 
  sinuee 
  (contrairement 
  au 
  

   genre 
  Ophion 
  oil 
  elle 
  est 
  fortement 
  recourbee 
  a 
  la 
  base)." 
  It 
  seems 
  

   probable, 
  since 
  the 
  second 
  abscissa 
  of 
  radiella 
  in 
  Ophion 
  is 
  always 
  

   straight, 
  that 
  the 
  "2" 
  is 
  a 
  typographical 
  error 
  for 
  "l" 
  and 
  that 
  the 
  

   description 
  applies 
  to 
  the 
  abscissula, 
  which, 
  in 
  Ophion, 
  is 
  more 
  or 
  less 
  

   distinctly 
  curved 
  basally. 
  The 
  form 
  of 
  the 
  mandible, 
  as 
  described, 
  

   and 
  of 
  the 
  stigma 
  and 
  basal 
  abscissa 
  of 
  radius 
  and 
  the 
  lack 
  of 
  the 
  

   fenestra 
  as 
  shown 
  in 
  the 
  figure 
  of 
  the 
  wing, 
  indicate 
  close 
  relationship 
  

   to 
  Ophion. 
  

  

  