﻿446 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.86 
  

  

  16. 
  SIMOPHION.s 
  new 
  genus 
  

  

  Plate 
  50, 
  Figube 
  23; 
  Plate 
  52, 
  Figure 
  48; 
  Plate 
  54, 
  Figure 
  55; 
  Plate 
  56, 
  

  

  Figure 
  92 
  

  

  This 
  and 
  the 
  next 
  five 
  genera 
  form 
  a 
  series 
  separable 
  from 
  the 
  rest 
  

   of 
  the 
  Ophion 
  group 
  of 
  genera 
  by 
  the 
  form 
  and 
  course 
  of 
  the 
  basal 
  

   abscissa 
  of 
  radius, 
  which 
  is 
  distinctly 
  thickened 
  at 
  the 
  extreme 
  base 
  

   and 
  rather 
  abruptly 
  bent 
  or 
  curved 
  immediately 
  beyond 
  the 
  thicken- 
  

   ing, 
  whence 
  it 
  is 
  straight 
  to 
  the 
  interception 
  of 
  the 
  intercubitus. 
  From 
  

   all 
  the 
  other 
  genera 
  the 
  present 
  genus 
  differs 
  in 
  the 
  pecuhar 
  form 
  of 
  

   the 
  clypeus, 
  the 
  obsolete 
  or 
  lacking 
  prepectoral 
  carina, 
  and 
  the 
  weakly 
  

   emarginate 
  eyes. 
  

  

  Head 
  (pi. 
  50, 
  fig. 
  23) 
  : 
  Thick, 
  temples 
  strongly 
  convex 
  and 
  nearly 
  

   or 
  quite 
  reaching 
  outside 
  tangents 
  of 
  eyes, 
  occiput 
  and 
  frons 
  not 
  or 
  

   very 
  shallowly 
  concave; 
  occipital 
  carina 
  rather 
  weak 
  but 
  complete; 
  

   frontal 
  orbits 
  shghtly 
  tumid; 
  eyes 
  parallel, 
  very 
  weakly 
  emarginate; 
  

   stemmaticum 
  sharply 
  defined, 
  ocelh 
  not 
  nearly 
  touching 
  eyes; 
  malar 
  

   space 
  short; 
  clypeus 
  very 
  short, 
  broadly 
  truncate, 
  usually 
  concavely 
  

   so, 
  at 
  apex, 
  protruding 
  in 
  such 
  manner 
  as 
  to 
  form 
  a 
  distinct 
  angle 
  with 
  

   face; 
  mandible 
  long 
  and 
  narrow, 
  lower 
  margin 
  bent 
  at 
  nearly 
  a 
  right 
  

   angle, 
  teeth 
  narrow, 
  upper 
  one 
  the 
  longer; 
  palpi 
  very 
  slender; 
  antenna 
  

   slender, 
  filiform, 
  much 
  shorter 
  than 
  body. 
  

  

  Thorax: 
  Pronotal 
  sinus 
  distinct 
  but 
  unusually 
  shallow, 
  spiracular 
  

   sclerite 
  visible; 
  mesoscutum 
  very 
  strongly 
  convex 
  and 
  precipitous 
  

   anteriorly, 
  notaulices 
  obsolete 
  or 
  wanting; 
  scutellum 
  narrow, 
  margined 
  

   at 
  most 
  basally, 
  its 
  frenum 
  and 
  that 
  of 
  postscutellum 
  shallow; 
  pre- 
  

   pectoral 
  carina 
  (pi. 
  52, 
  fig. 
  48) 
  very 
  weak 
  or 
  absent 
  ; 
  postpectoral 
  carina 
  

   absent; 
  speculum 
  defined; 
  propodeum 
  excarinate, 
  basal 
  constriction 
  

   shallow. 
  Wings 
  (pi. 
  54, 
  fig. 
  55) 
  with 
  discal 
  cihation 
  short 
  and 
  sparse, 
  

   a 
  hairless 
  area 
  below 
  stigma; 
  stigma 
  nearly 
  as 
  in 
  Enicospilus, 
  radius 
  

   at 
  about 
  basal 
  fourth; 
  basal 
  abscissa 
  of 
  radius 
  thickened 
  and 
  curved 
  

   at 
  extreme 
  base, 
  apical 
  abscissa 
  somewhat 
  reciu-ved 
  from 
  base; 
  basal 
  

   vein 
  decurved 
  at 
  base; 
  discocubitus 
  with 
  first 
  recurrent 
  portion 
  

   sinuous, 
  cubitus 
  portion 
  rather 
  strongly 
  arched, 
  the 
  two 
  portions 
  

   joining 
  in 
  a 
  rather 
  sharp 
  curve 
  or 
  a 
  slight 
  angle, 
  sometimes 
  with 
  a 
  

   trace 
  of 
  ramellus, 
  first 
  recurrent 
  and 
  basal 
  vein 
  nearly 
  parallel; 
  inter- 
  

   cubitus 
  half 
  or 
  more 
  as 
  long 
  as 
  second 
  abscissa 
  of 
  cubitus; 
  nervulus 
  

   interstitial 
  or 
  postf 
  ureal; 
  postnervulus 
  broken 
  shortly 
  above, 
  nervellus 
  

   shortly 
  below, 
  middle; 
  frenulum 
  short, 
  with 
  6-9 
  slender 
  hooks 
  spaced 
  

   rather 
  far 
  apart. 
  Legs 
  very 
  slender; 
  claws 
  w^eakly 
  curved, 
  pecten 
  

   (9) 
  with 
  short, 
  fine 
  teeth. 
  

  

  Abdomen 
  (pi. 
  56, 
  fig. 
  92) 
  : 
  Slender, 
  tergite 
  1 
  decurved, 
  petiole 
  terete, 
  

   postpetiole 
  depressed; 
  tergite 
  2 
  with 
  distinct 
  umbo, 
  spiracles 
  at 
  or 
  

   shghtly 
  beyond 
  middle, 
  epipleura 
  completely 
  separated. 
  

  

  > 
  From 
  o-tj«A»=snubnosed, 
  in 
  reference 
  to 
  the 
  short, 
  projecting 
  clypeus" 
  

  

  