﻿430 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.98 
  

  

  Thorax 
  (pi. 
  52, 
  fig. 
  37) 
  : 
  Propodeum 
  usually 
  not 
  distinctly 
  inflated, 
  

   not 
  reaching 
  apex 
  of 
  hind 
  coxa, 
  basal 
  constriction 
  less 
  deep 
  and 
  meta- 
  

   pleuron 
  not 
  so 
  deeply 
  inset, 
  rarely 
  approaching 
  the 
  condition 
  in 
  

   Thyreodon. 
  Wings 
  with 
  discoidal 
  cell 
  usually 
  longer 
  than, 
  rarely 
  equal 
  

   in 
  length 
  to, 
  brachial 
  cell, 
  lower 
  apical 
  angle 
  nearly 
  or 
  quite 
  a 
  right 
  

   angle; 
  frenulum 
  shorter 
  than 
  in 
  Thyreodon, 
  hooks 
  fewer 
  and 
  more 
  

   closely 
  spaced; 
  cubitclla 
  reaching 
  wing 
  margin; 
  nervellus 
  frequently 
  

   not 
  broken, 
  the 
  brachiella 
  originating 
  at 
  its 
  upper 
  end. 
  Hind 
  leg 
  longer 
  

   than 
  abdomen, 
  coxa 
  extending 
  beyond 
  apex 
  of 
  propodeum 
  by 
  nearly 
  

   half 
  the 
  length 
  of 
  coxa; 
  front 
  coxa 
  only 
  slightly, 
  middle 
  coxa 
  not 
  at 
  all 
  

   tuberculato 
  apically. 
  

  

  Abdomen 
  (pi. 
  56, 
  fig. 
  87): 
  Petiole 
  usually 
  terete; 
  sternite 
  2 
  not 
  

   reaching 
  middle 
  of 
  tergite 
  2, 
  sternite 
  3 
  not 
  reachmg 
  apex 
  of 
  tergite 
  2. 
  

  

  The 
  critical 
  characters 
  of 
  this 
  genus 
  are 
  the 
  inflated 
  second 
  joint 
  of 
  

   the 
  maxillary 
  palpus, 
  the 
  large 
  ocelli 
  and 
  the 
  extension 
  of 
  the 
  hind 
  

   coxae 
  beyond 
  the 
  propodeum. 
  

  

  3. 
  Genus 
  RHYNCHOPHION 
  Enderlein 
  

  

  Plate 
  50, 
  Figure 
  25; 
  Plate 
  51, 
  Figures 
  31, 
  35; 
  Plate 
  52, 
  Figure 
  39; 
  Plate 
  55, 
  

   Figures 
  76, 
  85; 
  Plate 
  66, 
  Figure 
  88 
  

  

  Rhynchophion 
  Enderlein, 
  Zool. 
  Anz., 
  vol. 
  39, 
  p. 
  630, 
  figs. 
  5, 
  7, 
  8, 
  1912. 
  [Geno- 
  

   type: 
  Rhynchophion 
  odontandroplax 
  Enderlein.] 
  Monobasic. 
  

  

  A 
  third 
  American 
  genus 
  of 
  the 
  Thyreodcn 
  group, 
  anomalous 
  in 
  the 
  

   anthophagous 
  trophi 
  and 
  the 
  entire 
  lack 
  of 
  the 
  postpectoral 
  carina, 
  

   and 
  differing 
  from 
  Thyreodon 
  otherwise 
  as 
  follows: 
  

  

  Head 
  (pi. 
  50, 
  fig. 
  25; 
  pi. 
  51, 
  fig. 
  35): 
  Broader 
  across 
  temples 
  than 
  

   across 
  eyes; 
  eyes 
  smaller 
  than 
  in 
  Thyreodon 
  and 
  only 
  arcuately 
  emar- 
  

   ginate, 
  malar 
  space 
  longer; 
  antennal 
  scrobes 
  shallow 
  and 
  not 
  cari- 
  

   nately 
  defined; 
  mandible 
  longer, 
  subparallel-sided, 
  lower 
  tooth 
  the 
  

   larger; 
  trophi 
  anthophagous, 
  both 
  labium 
  and 
  maxillae 
  unusually 
  

   long; 
  second 
  joint 
  of 
  maxillary 
  palpus 
  slender, 
  terete; 
  scape 
  some- 
  

   what 
  obliquely 
  truncate. 
  

  

  Thorax: 
  Pronotum 
  with 
  only 
  a 
  shallow 
  groove 
  dorsally, 
  posterior 
  

   and 
  anterior 
  margins 
  not 
  at 
  all 
  elevated; 
  notaulices 
  obsolete; 
  meso- 
  

   pleuron 
  with 
  a 
  broad 
  longitudinal 
  impression 
  at 
  level 
  of 
  fovea; 
  pre- 
  

   pectoral 
  carina 
  (pi. 
  52, 
  fig. 
  39) 
  developed 
  only 
  ventrally; 
  postpectoral 
  

   carina 
  not 
  at 
  aU 
  indicated 
  medially; 
  metapleuron 
  (pi. 
  51, 
  fig. 
  31) 
  

   large, 
  subovate, 
  convex; 
  propodeum 
  (pi. 
  51, 
  fig. 
  31) 
  not 
  at 
  all 
  inflated, 
  

   basal 
  construction 
  shallow 
  medially, 
  spiracles 
  situated 
  behind 
  con- 
  

   striction. 
  Wings 
  very 
  densely 
  clothed 
  with 
  long, 
  recumbent 
  hair; 
  

   lower 
  apical 
  angle 
  of 
  discoidal 
  cell 
  right 
  or 
  slightly 
  obtuse; 
  frenulum 
  

   short, 
  hooks 
  closely 
  and 
  evenly 
  spaced. 
  Legs 
  rather 
  slender, 
  hind 
  leg 
  

   much 
  longer 
  than 
  abdomen; 
  front 
  and 
  middle 
  coxae 
  not 
  at 
  all 
  tuber- 
  

  

  