﻿46 
  CAMERON, 
  Hymenoptcra 
  Orientalia. 
  

  

  Comes 
  into 
  Bingham's 
  " 
  Section 
  B 
  : 
  head 
  black, 
  

   variegated 
  with 
  red 
  or 
  ferruginous 
  ; 
  thorax 
  red 
  " 
  and 
  " 
  d. 
  

   Second 
  abdominal 
  segment 
  with 
  no 
  white 
  spots, 
  but 
  a 
  

   fascia 
  on 
  apical 
  margin 
  semicircular." 
  This 
  only 
  contains 
  

   M. 
  reticulata, 
  which 
  has 
  no 
  near 
  relationship 
  to 
  the 
  present 
  

   species 
  and 
  may 
  be 
  known 
  from 
  it 
  by 
  the 
  median 
  

   segment 
  not 
  being 
  spinose. 
  

  

  Head 
  slightly, 
  but 
  distinctly, 
  wider 
  than 
  the 
  thorax 
  ; 
  

   slightly 
  broader 
  than 
  long 
  ; 
  rounded 
  in 
  front, 
  slightly 
  

   roundly 
  concave 
  behind 
  ; 
  black, 
  a 
  large 
  red 
  mark 
  on 
  the 
  

   vertex 
  broader 
  than 
  long, 
  punctured 
  uniformly 
  ; 
  sparsely 
  

   covered 
  with 
  short 
  blackish 
  hair 
  ; 
  the 
  antennal 
  tubercles 
  

   smooth, 
  shining, 
  red. 
  Mandibles 
  broadly 
  rufous 
  in 
  the 
  

   middle 
  and 
  fringed 
  with 
  long, 
  pale 
  fulvous 
  hair. 
  Antennae 
  

   thickly 
  covered 
  with 
  a 
  pale 
  down, 
  stout, 
  the 
  fiagellum 
  

   brownish 
  beneath. 
  Thorax 
  black, 
  the 
  mesonotum 
  broadly 
  

   rufous 
  in 
  the 
  middle 
  ; 
  it 
  is 
  longer 
  than 
  broad, 
  not 
  much 
  

   longer 
  than 
  the 
  head 
  ; 
  the 
  base 
  broadly 
  rounded 
  ; 
  the 
  

   apex 
  has 
  a 
  broad 
  plate 
  in 
  the 
  centre, 
  almost 
  square, 
  and 
  

   with 
  a 
  small, 
  stout, 
  square 
  tooth 
  on 
  either 
  side 
  ; 
  outside 
  

   this 
  is 
  a 
  nipple-like 
  tooth. 
  Mesonotum 
  longitudinally 
  

   rugose 
  in 
  the 
  middle 
  on 
  the 
  basal 
  two-thirds. 
  The 
  apex 
  

   of 
  the 
  median 
  segment 
  has 
  an 
  oblique 
  slope, 
  and 
  is 
  irregu- 
  

   larly, 
  and 
  not 
  very 
  distinctly, 
  reticulated 
  round 
  the 
  sides. 
  

   Pleurae 
  smooth 
  and 
  shining 
  ; 
  the 
  apical 
  half 
  of 
  the 
  meta- 
  

   pleurae 
  strongly 
  punctured. 
  Legs 
  thickly 
  covered 
  with 
  

   white 
  hair 
  ; 
  the 
  femora 
  and 
  coxae 
  have 
  a 
  piceous 
  tinge 
  ; 
  the 
  

   tibial 
  spines 
  dark, 
  the 
  tarsal 
  bright 
  rufous, 
  the 
  calcaria 
  

   pale. 
  Abdomen 
  black, 
  rather 
  thickly 
  pilose 
  ; 
  on 
  the 
  apex 
  

   of 
  the 
  first 
  is 
  a 
  small, 
  on 
  that 
  of 
  the 
  second 
  a 
  larger, 
  

   tuft 
  of 
  pale 
  fulvous 
  pubescence. 
  Pygidium 
  strongly 
  

   punctured 
  ; 
  the 
  middle 
  smooth 
  and 
  bordered. 
  The 
  basal 
  

   ventral 
  segment 
  is 
  smooth 
  and 
  shining, 
  dull 
  rufous; 
  there 
  

   is 
  a 
  narrow 
  oblique 
  keel 
  along 
  the 
  sides, 
  but 
  no 
  central 
  keel. 
  

  

  