﻿Hymenoptera 
  Orientalis. 
  23 
  

  

  The 
  face 
  is 
  densely 
  covered 
  with 
  long 
  silvery 
  white 
  hair 
  ; 
  

   the 
  front 
  and 
  vertex 
  densely 
  pubescent 
  and 
  covered 
  

   sparsely 
  with 
  long 
  gray 
  hair 
  ; 
  clypeus 
  rounded. 
  The 
  

   central 
  incision 
  narrow 
  ; 
  eyes 
  slightly 
  converging 
  towards 
  

   the 
  bottom 
  ; 
  mandibles 
  reddish 
  ; 
  black 
  at 
  base 
  and 
  apex. 
  

   Antennee 
  pubescent 
  ; 
  the 
  third 
  joint 
  fully 
  one-half 
  longer 
  

   than 
  the 
  fourth, 
  which 
  is 
  a 
  little 
  longer 
  than 
  the 
  fifth. 
  

   Thorax 
  densely 
  covered 
  with 
  a 
  silvery 
  pile 
  ; 
  the 
  pronotum 
  

   above, 
  the 
  metathorax 
  and 
  the 
  pleurae 
  thickly 
  covered 
  with 
  

   cinereous 
  hair 
  ; 
  a 
  thick 
  line 
  of 
  silvery 
  hair 
  along 
  the 
  tegulae 
  

   on 
  the 
  mesonotum 
  ; 
  finely 
  punctured 
  ; 
  the 
  scutellum 
  shining, 
  

   bearing 
  distinct 
  punctures, 
  and 
  furrowed 
  down 
  the 
  centre. 
  

   Median 
  segment 
  with 
  some 
  stout 
  transverse 
  furrows, 
  

   opaque 
  ; 
  rounded 
  and 
  narrowed 
  at 
  the 
  apex 
  and 
  nearly 
  as 
  

   long 
  as 
  the 
  mesothorax. 
  Petiole 
  black, 
  covered 
  with 
  grey 
  

   hair 
  ; 
  and 
  one-half 
  longer 
  than 
  the 
  hind 
  coxae. 
  Abdomen 
  

   shining, 
  indistinctly 
  punctured, 
  elongate, 
  sharply 
  punctured 
  

   at 
  base 
  and 
  apex 
  ; 
  the 
  apical 
  segments 
  more 
  distinctly 
  

   punctured. 
  Legs 
  longish 
  ; 
  broadly 
  black 
  at 
  the 
  base 
  ; 
  the 
  

   tibial 
  spines 
  red 
  ; 
  the 
  tarsal 
  reddish 
  in 
  part 
  ; 
  the 
  calcaria 
  

   black, 
  red 
  at 
  the 
  extreme 
  apex. 
  The 
  second 
  cubital 
  cellule 
  

   is 
  oblique, 
  of 
  equal 
  width 
  at 
  top 
  and 
  bottom 
  and 
  receives 
  

   the 
  recurrent 
  nervure 
  a 
  very 
  little 
  beyond 
  the 
  middle 
  ; 
  the 
  

   third 
  cellule 
  is 
  longer 
  at 
  the 
  bottom 
  than 
  the 
  second, 
  but 
  at 
  

   the 
  top 
  is 
  less 
  than 
  one-fourth 
  of 
  the 
  length 
  ; 
  the 
  recurrent 
  

   nervure 
  is 
  received 
  before 
  the 
  middle 
  of 
  the 
  cellule. 
  

  

  The 
  $ 
  does 
  not 
  differ 
  in 
  coloration 
  or 
  sculpture 
  from 
  

   the 
  $. 
  The 
  tegulae 
  are 
  reddish. 
  The 
  form 
  of 
  the 
  cubital 
  

   cellules 
  and 
  the 
  position 
  of 
  the 
  recurrent 
  nervures 
  vary. 
  

  

  In 
  form 
  this 
  species 
  approaches 
  closely 
  to 
  S. 
  piibescens 
  ; 
  

   but 
  the 
  black 
  legs 
  of 
  that 
  insect 
  distinguish 
  it 
  at 
  once. 
  

  

  ,^ 
  Sphex 
  xanthoptera, 
  sp. 
  nov. 
  

  

  Nigra, 
  argeftteo 
  sericeo 
  puhescens 
  ; 
  facie, 
  pleuris, 
  pronota 
  

   metathoracequc, 
  longe 
  cinereo 
  pilosis 
  ; 
  alis 
  fiavo-hyalinis 
  

   apice 
  fumatis. 
  Long. 
  17 
  — 
  18 
  mm. 
  

  

  