﻿42 
  CAMERON, 
  Hymenoptera 
  Oricntaiia. 
  

  

  the 
  fourth 
  segment 
  broadly 
  yellow, 
  a 
  narrow, 
  short, 
  rufous 
  

   line 
  down 
  the 
  middle 
  at 
  the 
  base, 
  and 
  a 
  rufous 
  mark 
  on 
  

   each 
  side; 
  the 
  fifth 
  segment 
  broadly 
  yellow, 
  in 
  the 
  middle; 
  

   the 
  rufous 
  triangularly 
  projecting 
  into 
  it 
  at 
  the 
  sides 
  and 
  

   at 
  the 
  base 
  in 
  the 
  middle 
  ; 
  the 
  last 
  segment 
  broadly 
  

   yellow 
  ; 
  there 
  is 
  a 
  transverse 
  depression 
  at 
  the 
  apex. 
  The 
  

   sides, 
  base 
  and 
  apex 
  of 
  the 
  lower 
  side 
  of 
  the 
  petiole 
  

   smooth, 
  impunctate, 
  the 
  rest 
  with 
  stout, 
  slightly 
  curved 
  

   keels. 
  The 
  second 
  segment, 
  except 
  in 
  the 
  middle, 
  with 
  

   shallow, 
  rather 
  widely 
  separated, 
  punctures 
  ; 
  the 
  other 
  

   segments 
  much 
  more 
  closely 
  and 
  strongly 
  punctured. 
  

  

  What 
  is 
  no 
  doubt 
  a 
  variety 
  has 
  the 
  apex 
  of 
  the 
  second 
  

   abdominal 
  segment 
  broadly 
  lemon-yellow, 
  while 
  in 
  its 
  

   centre, 
  at 
  the 
  base, 
  is 
  a 
  large, 
  somewhat 
  triangular, 
  black 
  

   mark, 
  the 
  narrow 
  part 
  of 
  which 
  is 
  at 
  the 
  base; 
  its 
  fourth 
  

   segment 
  is 
  black 
  at 
  the 
  base. 
  

  

  Note. 
  — 
  This 
  species 
  may 
  not 
  be 
  a 
  true 
  Pterochilus. 
  The 
  

   maxillary 
  palpi 
  are 
  6-jointed 
  as 
  in 
  the 
  typical 
  species 
  ; 
  but 
  the 
  

   labial 
  are 
  distinctly 
  4-jointed, 
  whereas 
  in 
  Pterochilus 
  proper 
  they 
  

   are 
  3-jointed 
  only. 
  On 
  the 
  basal 
  joint 
  of 
  the 
  labial 
  palpi 
  there 
  are 
  

   two 
  or 
  three 
  hairs 
  near 
  the 
  middle; 
  and 
  at 
  the 
  apices 
  of 
  the 
  first, 
  

   second, 
  and 
  third 
  joints 
  are 
  two 
  or 
  three 
  long, 
  stiff, 
  bristle-like 
  

   hairs. 
  The 
  fourth 
  joint 
  is 
  bare 
  and 
  is 
  nearly 
  half 
  the 
  length 
  of 
  the 
  

   third. 
  In 
  addition 
  to 
  the 
  four 
  large 
  apical 
  teeth 
  on 
  the 
  man- 
  

   dibles, 
  there 
  are 
  two 
  small 
  ones 
  and 
  a 
  much 
  larger 
  rounded 
  one. 
  

  

  The 
  number 
  of 
  joints 
  in 
  the 
  labial 
  palpi 
  and 
  their 
  clothing 
  

   do 
  not 
  appear 
  to 
  be 
  features 
  of 
  generic 
  importance. 
  Saussure 
  

   says 
  {Monog. 
  des 
  Gutpes, 
  hi., 
  p. 
  321) 
  : 
  " 
  On 
  remarque 
  des 
  especes 
  

   dont 
  les 
  palpes 
  labiaux 
  sont 
  a 
  peine 
  comprimes 
  et 
  a 
  peine 
  

   plumeux 
  ; 
  on 
  apercoit 
  mcme 
  parfois 
  un 
  quatrieme 
  article 
  rudi- 
  

   mentaire 
  ;" 
  but 
  in 
  our 
  species 
  the 
  fourth 
  joint 
  cannot 
  be 
  called 
  

   " 
  rudimentary," 
  being 
  quite 
  distinct. 
  

  

  ODYNERUS. 
  

  

  ODYNERUS 
  EREBODES, 
  sp. 
  nov. 
  

   Niger, 
  capite 
  t 
  ho 
  race 
  que 
  distincte 
  punctatis 
  ; 
  abdominis 
  

   segmentis 
  1-3 
  pallide 
  flavo-balteatis 
  ; 
  pedibus 
  sordidc 
  rufis; 
  

  

  