﻿32 
  CAMERON, 
  Hymenoptera 
  Orientalia. 
  

  

  Wings 
  hyaline, 
  with 
  a 
  faint 
  fuscous 
  tinge. 
  Abdomen 
  as 
  

   long 
  as 
  the 
  head 
  and 
  thorax 
  united, 
  alutaceous 
  ; 
  the 
  

   petiole 
  somewhat 
  longer 
  than 
  the 
  second 
  segment, 
  nodose 
  

   at 
  the 
  apex 
  ; 
  the 
  third 
  and 
  fourth 
  segments 
  shining 
  at 
  the 
  

   base; 
  the 
  fifth 
  segment 
  thickly 
  covered, 
  especially 
  towards 
  

   the 
  apex, 
  with 
  fulvous 
  pubescence, 
  the 
  apex 
  of 
  the 
  seg- 
  

   ment 
  itself 
  being 
  fulvous; 
  the 
  base 
  of 
  the 
  pygidial 
  area 
  

   closely 
  rugosely 
  punctured 
  ; 
  the 
  narrowed 
  apex 
  shining, 
  

   smooth, 
  except 
  for 
  a 
  few 
  indistinct 
  striae 
  ; 
  the 
  sides 
  of 
  the 
  

   segment 
  fringed 
  with 
  long, 
  stiff, 
  pale 
  fulvous 
  hairs. 
  On 
  the 
  

   side 
  of 
  the 
  third 
  segment 
  is 
  a 
  large 
  mark 
  broader 
  than 
  

   long, 
  the 
  base 
  rounded, 
  narrowed 
  in 
  the 
  middle, 
  almost 
  

   heart-shaped 
  ; 
  on 
  the 
  side 
  of 
  the 
  fourth 
  segment 
  is 
  a 
  more 
  

   elongated 
  yellow 
  mark 
  ; 
  the 
  outer 
  half 
  broader, 
  and 
  dilated 
  

   posteriorly 
  ; 
  the 
  mark 
  on 
  the 
  side 
  of 
  the 
  fifth 
  segment 
  

   is 
  larger, 
  wider, 
  and 
  projecting 
  backwards 
  on 
  the 
  lower 
  

   side 
  at 
  the 
  base. 
  The 
  ventral 
  surface 
  is 
  sparsely 
  covered 
  

   with 
  longish 
  fuscous 
  hair. 
  

  

  Only 
  one 
  species 
  of 
  Crabro 
  is 
  recorded 
  from 
  Ceylon 
  

   by 
  Col. 
  Bingham, 
  C. 
  palitans 
  Bing., 
  which 
  also 
  is 
  found 
  

   in 
  North- 
  West 
  India. 
  It 
  is 
  very 
  different 
  from 
  C. 
  taprobance, 
  

   having 
  the 
  abdomen 
  not 
  petiolated. 
  

  

  Crabro 
  vekburii, 
  sp. 
  nov. 
  

  

  Long. 
  6 
  mm. 
  

  

  Hub. 
  Trincomali, 
  Ceylon 
  ( 
  Yerbury). 
  

  

  Belongs 
  to 
  Bingham's 
  section 
  " 
  A. 
  b. 
  Petiole 
  short, 
  

   subpyriform, 
  gradually 
  widened 
  from 
  base 
  to 
  apex." 
  C. 
  

   odontophora 
  differs 
  from 
  it 
  in 
  the 
  twisted, 
  dilated 
  and, 
  at 
  

   base, 
  dentate 
  basal 
  joint 
  of 
  anterior 
  tarsi, 
  in 
  the 
  median 
  

   segment 
  being 
  strongly 
  aciculated 
  ; 
  the 
  hollows 
  at 
  its 
  

   sides 
  with 
  stout 
  keels. 
  The 
  "enclosed 
  space" 
  on 
  the 
  

   median 
  segment 
  very 
  smooth, 
  shining 
  and 
  glabrous 
  ; 
  

   surrounded 
  by 
  a 
  wide, 
  moderately 
  deep, 
  crenulated 
  furrow, 
  

   and 
  having 
  a 
  similar 
  crenulated 
  furrow 
  down 
  its 
  centre 
  ; 
  

  

  