﻿442 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.96 
  

  

  13. 
  POTOPHION,' 
  new 
  genus 
  

  

  Plate 
  50, 
  Figure 
  26; 
  Plate 
  56, 
  Figure 
  91 
  

  

  Essentially 
  Ophion 
  in 
  all 
  the 
  group 
  characters, 
  this 
  genus 
  is 
  remark- 
  

   able 
  for 
  the 
  anthophagous 
  trophi 
  (pi. 
  50, 
  fig. 
  26) 
  and 
  exserted 
  oviposi- 
  

   tor 
  (pi. 
  56, 
  fig. 
  91). 
  Those 
  two 
  characters 
  should 
  sufiice 
  to 
  distin- 
  

   guish 
  it. 
  Some 
  of 
  the 
  other 
  characters 
  mentioned 
  in 
  the 
  following 
  

   description 
  of 
  the 
  genotype, 
  especially 
  the 
  form 
  of 
  the 
  head, 
  may 
  also 
  

   be 
  of 
  generic 
  significance. 
  

  

  Genotype. 
  — 
  Potophion 
  caudatus, 
  new 
  species. 
  

  

  POTOPmON 
  CAUDATUS. 
  new 
  species 
  

  

  Head 
  (pi. 
  50, 
  fig. 
  26) 
  : 
  About 
  as 
  long 
  as 
  broad; 
  eyes 
  long 
  and 
  narrow; 
  

   combined 
  face 
  and 
  clypeus 
  much 
  longer 
  than 
  broad, 
  slightly 
  broader 
  

   than 
  frons; 
  temples 
  sharply 
  receding; 
  occipital 
  carina 
  weak, 
  especially 
  

   medially 
  and 
  at 
  lower 
  extremities; 
  cheeks 
  and 
  malar 
  space 
  very 
  nar- 
  

   row; 
  ocelli 
  large, 
  but 
  not 
  touching 
  eyes; 
  mandible 
  much 
  broader 
  at 
  

   base 
  than 
  at 
  apex 
  ; 
  trophi, 
  especially 
  the 
  labium, 
  unusually 
  long, 
  lobes 
  

   of 
  Hgula 
  about 
  three 
  times 
  as 
  long 
  as 
  broad. 
  

  

  Thorax: 
  Slender; 
  notaulices 
  weak; 
  scutellum 
  not 
  at 
  all 
  margined; 
  

   prepectoral 
  carina 
  strong, 
  complete, 
  very 
  strongly 
  sinuate; 
  postpecto- 
  

   ral 
  carina 
  lacking; 
  propodeum 
  long, 
  only 
  moderately 
  convex, 
  with 
  

   complete 
  basal 
  and 
  medially 
  interrupted 
  apical 
  carinae. 
  Wings 
  with 
  

   radius 
  at 
  basal 
  third 
  of 
  stigma, 
  its 
  apical 
  abscissa 
  gently 
  recurved; 
  

   a 
  sharply 
  defined 
  hairless 
  area 
  below 
  base 
  of 
  stigma; 
  discocubitus 
  

   sharply 
  broken 
  by 
  ^a 
  long 
  ramellus, 
  its 
  basal 
  abscissa 
  strongly 
  con- 
  

   vergent 
  with 
  basal 
  vein; 
  lower 
  apical 
  angle 
  of 
  second 
  discoidal 
  cell 
  

   acute, 
  postnervulus 
  broken 
  a 
  little 
  above 
  middle 
  ; 
  veins 
  of 
  transverse 
  

   brace 
  in 
  about 
  the 
  ratio 
  of 
  1:2:4, 
  abscissula 
  long, 
  strongly 
  curved 
  at 
  

   base, 
  gently 
  sinuate 
  beyond; 
  nervellus 
  broken 
  a 
  little 
  below 
  middle. 
  

  

  Abdomen 
  (pi. 
  56, 
  fig. 
  91): 
  Strongly 
  compressed 
  beyond 
  tergite 
  2; 
  

   postpetiole 
  depressed, 
  more 
  than 
  half 
  as 
  long 
  as 
  petiole; 
  tergite 
  2 
  with 
  

   spiracles 
  very 
  sHghtly 
  basad 
  of 
  middle, 
  umbo 
  distinct, 
  epipleura 
  

   separated 
  throughout; 
  ovipositor 
  recurved, 
  sheath 
  about 
  as 
  long 
  as 
  

   first 
  tergite. 
  

  

  Ferruginous, 
  with 
  head 
  largely, 
  thorax 
  laterally, 
  parapsidal 
  stripes 
  

   and 
  lateral 
  margins 
  of 
  mesoscutum, 
  postscutellum, 
  and 
  petiole 
  yellow; 
  

   dorsal 
  edge 
  of 
  abdomen 
  somewhat 
  brownish; 
  sheath 
  blackish; 
  wings 
  

   hyaline, 
  costa 
  and 
  stigma 
  yellow, 
  other 
  veins 
  brown. 
  

  

  Type 
  locality. 
  — 
  Mount 
  Omei, 
  Szechwan, 
  China, 
  11,000 
  feet. 
  

  

  Type.— 
  v. 
  S. 
  N. 
  M. 
  No. 
  57604. 
  

  

  Two 
  females, 
  both 
  captured 
  by 
  D. 
  C. 
  Graham, 
  the 
  holotype 
  in 
  

   July 
  1936, 
  and 
  the 
  paratype 
  at 
  12,000 
  feet, 
  30 
  miles 
  north 
  of 
  Tatseinlu, 
  

   Szechwan, 
  on 
  July 
  9, 
  1923. 
  

  

  ' 
  From 
  roHis 
  = 
  drinking, 
  in 
  reference 
  to 
  the 
  long 
  trophL 
  

  

  