﻿of 
  imdescrihed 
  Chinese 
  Hymenoptera. 
  35 
  

  

  division 
  of 
  the 
  genus 
  according 
  to 
  Shuckard, 
  who 
  formed 
  a 
  sub- 
  

   genus 
  for 
  those 
  species 
  which 
  receive 
  the 
  first 
  recurrent 
  nervure 
  

   towards 
  the 
  apex 
  of 
  the 
  first 
  submarginal 
  cell 
  ; 
  it 
  would 
  therefore 
  

   belong 
  to 
  his 
  genus 
  Pisonitus 
  ; 
  but 
  the 
  second 
  recurrent 
  nervure 
  

   is 
  in 
  accordance 
  with 
  the 
  species 
  of 
  Pison, 
  and 
  therefore 
  I 
  prefer 
  

   including 
  it 
  in 
  the 
  latter 
  genus, 
  to 
  making 
  a 
  second 
  subgeneric 
  

   division. 
  Species 
  of 
  this 
  genus 
  are 
  rare 
  from 
  all 
  localities 
  except 
  

   Australia, 
  which 
  appears 
  to 
  be 
  its 
  metropolis. 
  

  

  Cerceris 
  Zonalis. 
  

  

  Female, 
  — 
  Black, 
  deeply 
  punctured 
  ; 
  the 
  face 
  yellow 
  below 
  the 
  

   base 
  of 
  the 
  antennae 
  ; 
  a 
  narrow 
  yellow 
  line 
  running 
  between 
  the 
  

   antennas 
  up 
  to 
  the 
  anterior 
  stemma 
  ; 
  a 
  minute 
  dot 
  at 
  the 
  vertex 
  

   of 
  the 
  eyes, 
  behind; 
  the 
  mandibles 
  yellow, 
  their 
  apex 
  black; 
  the 
  

   antennae 
  beneath, 
  and 
  their 
  scape 
  above, 
  ferruginous, 
  the 
  latter 
  

   yellow 
  in 
  front 
  ; 
  the 
  collar, 
  tegulae, 
  post-scutellum, 
  and 
  a 
  minute 
  dot 
  

   on 
  each 
  side 
  of 
  the 
  metathorax, 
  yellow 
  ; 
  the 
  legs 
  fusco-ferruginous 
  ; 
  

   the 
  anterior 
  femora 
  and 
  tibia 
  in 
  front, 
  their 
  tarsi 
  in 
  front, 
  the 
  in- 
  

   termediate 
  and 
  posterior 
  femora 
  at 
  their 
  apex 
  above, 
  their 
  tibia 
  in 
  

   front, 
  and 
  the 
  basal 
  joint 
  of 
  the 
  intermediate 
  tarsi, 
  yellow; 
  the 
  

   apex 
  of 
  the 
  anterior 
  wings 
  dark-fuscous. 
  The 
  basal 
  segment 
  of 
  

   the 
  abdomen 
  ferruginous, 
  the 
  third 
  and 
  fifth 
  segments 
  yellow, 
  

   having 
  their 
  basal 
  margins 
  black. 
  

  

  Hab. 
  North 
  China. 
  

  

  Rhynchiumjlavo-marginatum. 
  

  

  Male. 
  — 
  Black 
  ; 
  the 
  head 
  and 
  thorax 
  closely 
  punctured 
  ; 
  the 
  

   clypeus, 
  a 
  minute 
  spot 
  between 
  the 
  antennas, 
  and 
  the 
  scape 
  in 
  

   front, 
  cream-coloured 
  ; 
  the 
  entire 
  margin 
  of 
  the 
  clypeus 
  black 
  ; 
  

   the 
  apical 
  recurved 
  joint 
  of 
  the 
  antennae 
  ferruginous. 
  An 
  in- 
  

   terrupted 
  yellow 
  stripe 
  on 
  the 
  margin 
  of 
  the 
  prothorax 
  ; 
  the 
  

   tegulse 
  have 
  a 
  ferruginous 
  spot 
  ; 
  the 
  wings 
  smoky, 
  darkest 
  at 
  their 
  

   anterior 
  margins, 
  and 
  beautifully 
  iridescent 
  ; 
  the 
  intermediate 
  and 
  

   posterior 
  femora 
  ferruginous 
  above 
  and 
  the 
  anterior 
  pair 
  at 
  their 
  

   apex; 
  a 
  cream-coloured 
  stripe 
  on 
  the 
  anterior 
  tibiae 
  in 
  front; 
  the 
  

   claws 
  testaceous. 
  Abdomen 
  deeply 
  punctured, 
  the 
  margin 
  of 
  

   the 
  first 
  and 
  second 
  segments 
  yellow, 
  slightly 
  interrupted 
  in 
  

   the 
  middle; 
  beneath, 
  the 
  margins 
  of 
  the 
  segments 
  are 
  rufo- 
  

   piceous. 
  

  

  The 
  specimen 
  described 
  is 
  doubly 
  stylopized 
  ; 
  the 
  heads 
  of 
  two 
  

   female 
  stylops 
  project 
  beneath 
  the 
  third 
  abdominal 
  segment. 
  

   d2 
  

  

  