﻿Hymenoptera 
  Orientalis. 
  23 
  

  

  cubital 
  cellule 
  twice 
  longer 
  than 
  wide 
  ; 
  the 
  recurrent 
  nervure 
  

   received 
  in 
  the 
  basal 
  third. 
  Length 
  8 
  — 
  9 
  mm. 
  

  

  The 
  spines 
  on 
  the 
  mesosternum 
  separate 
  readily 
  this 
  

   distinct 
  species. 
  

  

  ^ 
  Cerceris 
  SULPHUREA, 
  sp. 
  nov. 
  (PL 
  X., 
  f. 
  II, 
  a, 
  b). 
  

  

  Sulphureous 
  ; 
  the 
  ocellar 
  region 
  and 
  three 
  lines 
  on 
  the 
  

   mesonotum, 
  sordid 
  rufous 
  ; 
  wings 
  clear 
  hyaline, 
  the 
  apex 
  

   from 
  a 
  little 
  before 
  the 
  end 
  of 
  the 
  radial 
  cellule 
  fuscous, 
  

   the 
  nervures 
  fuscous 
  ; 
  the 
  flagellum 
  of 
  the 
  antennae 
  pale 
  

   rufous. 
  Clypeus 
  convex, 
  broadly 
  rounded 
  at 
  the 
  apex. 
  

   Eyes 
  slightly 
  diverging 
  ; 
  posterior 
  ocelli 
  separated 
  from 
  

   each 
  other 
  by 
  the 
  length 
  of 
  the 
  third 
  and 
  from 
  the 
  eyes 
  by 
  

   the 
  length 
  of 
  the 
  first 
  antennal 
  joint. 
  The 
  third 
  antennal 
  

   joint 
  only 
  a 
  little 
  longer 
  than 
  the 
  fourth. 
  Body 
  covered 
  

   with 
  long 
  white 
  hair 
  ; 
  that 
  on 
  the 
  face 
  silvery. 
  Punctuation 
  

   moderately 
  strong. 
  Trigonal 
  area 
  punctured. 
  Petiole 
  

   nodose, 
  longer 
  than 
  broad. 
  Pygidial 
  area 
  broad, 
  but 
  longer 
  

   than 
  broad, 
  punctured, 
  the 
  apex 
  bluntly 
  rounded. 
  Second 
  

   cubital 
  cellule 
  not 
  much 
  longer 
  than 
  broad 
  ; 
  the 
  first 
  

   recurrent 
  nervure 
  almost 
  interstitial. 
  $ 
  . 
  Length 
  8 
  mm. 
  

  

  ^^ 
  Cerceris 
  tetradonta, 
  sp. 
  nov. 
  (PI. 
  X. 
  f. 
  12, 
  a, 
  b). 
  

  

  Black, 
  closely 
  and 
  rather 
  strongly 
  punctured, 
  the 
  

   clypeus, 
  the 
  cheeks 
  broadly 
  from 
  near 
  to 
  the 
  top 
  of 
  the 
  

   antennal 
  ridge, 
  the 
  antennal 
  ridge 
  ; 
  scape 
  beneath, 
  the 
  

   base 
  of 
  the 
  mandibles 
  ; 
  two 
  small 
  spots 
  behind 
  the 
  

   ocelli, 
  a 
  large 
  line 
  behind 
  the 
  eyes, 
  a 
  broad 
  line 
  on 
  the 
  

   side 
  of 
  the 
  pronotum, 
  a 
  mark 
  on 
  the 
  side 
  of 
  the 
  scutel- 
  

   lum, 
  metanotum, 
  two 
  large 
  marks 
  on 
  the 
  sides 
  of 
  the 
  

   median 
  segment, 
  tegulae, 
  tubercles, 
  a 
  small 
  spot 
  below 
  them, 
  

   the 
  sides 
  of 
  the 
  petiole, 
  and 
  a 
  short 
  line 
  on 
  the 
  edges 
  of 
  the 
  

   other 
  segments 
  and 
  on 
  the 
  edges 
  of 
  the 
  third 
  to 
  fifth 
  

   ventral 
  segments, 
  whitish-yellow. 
  Ocelli 
  not 
  forming 
  a 
  

   triangle 
  ; 
  the 
  outer 
  separated 
  from 
  the 
  eyes 
  by 
  a 
  little 
  more 
  

  

  