﻿142 
  Mr. 
  S. 
  S. 
  Saunders's 
  Notices 
  of 
  some 
  

  

  black. 
  Thorax 
  anteriorly 
  banded 
  with 
  yellow 
  ; 
  the 
  scapula 
  of 
  the 
  

   wings 
  and 
  a 
  spot 
  beneath 
  the 
  same 
  of 
  variable 
  size, 
  the 
  posterior 
  

   angles 
  more 
  or 
  less, 
  and 
  two 
  transverse 
  bands 
  across 
  the 
  scutellum, 
  

   the 
  anterior 
  one 
  usually 
  broadest, 
  entire 
  or 
  bilobed, 
  yellow, 
  Abdo- 
  

   men 
  having 
  the 
  posterior 
  margin 
  of 
  each 
  segment 
  except 
  the 
  last 
  in 
  

   the 
  female, 
  and 
  the 
  two 
  last 
  in 
  the 
  male, 
  broadly 
  yellow, 
  which 
  in 
  the 
  

   first 
  segment 
  is 
  dilated 
  on 
  each 
  side 
  towards 
  the 
  base; 
  the 
  second 
  

   segment 
  campanulate, 
  with 
  a 
  large 
  isolated 
  basal 
  pustule 
  of 
  the 
  

   same 
  colour 
  on 
  each 
  side, 
  sometimes 
  entirely 
  absent 
  ; 
  all 
  the 
  seg- 
  

   ments 
  having 
  the 
  yellow 
  margins 
  traversed 
  by 
  a 
  close 
  irregular 
  

   double 
  series 
  of 
  black 
  punctures. 
  Legs 
  yellow, 
  with 
  the 
  base 
  of 
  

   the 
  femora 
  black, 
  and 
  the 
  apex 
  of 
  tarsi 
  testaceous; 
  body 
  somewhat 
  

   piceous 
  beneath, 
  the 
  posterior 
  margin 
  of 
  the 
  second 
  abdominal 
  

   segment 
  yellow. 
  Wings 
  hyaline. 
  

  

  The 
  male 
  differs 
  in 
  having 
  the 
  clypeus 
  entirely 
  yellow, 
  or 
  with 
  

   only 
  a 
  small 
  discal 
  black 
  marking, 
  and 
  the 
  penultimate 
  and 
  anal 
  

   abdominal 
  segments 
  bearing 
  a 
  yellow 
  pustule. 
  

  

  Long. 
  Corp. 
  4 
  4| 
  lin. 
  

  

  Alar. 
  exp. 
  5| 
  ,... 
  6 
  lin. 
  

  

  I 
  propose 
  to 
  designate 
  this 
  species 
  by 
  the 
  appellation 
  of 
  ^. 
  de- 
  

   Jlendus, 
  in 
  allusion 
  to 
  its 
  parasitic 
  infliction. 
  

  

  2. 
  Xenos 
  Klugii. 
  

  

  I 
  have 
  only 
  seen 
  males 
  of 
  this 
  species, 
  parasitic 
  on 
  the 
  Odynerus 
  

   (Oplopus, 
  Wesm.) 
  rubicota 
  of 
  Dufour, 
  which 
  were 
  obtained 
  after 
  

   the 
  death 
  of 
  the 
  Odynerus^ 
  extracted 
  from 
  its 
  earthen 
  cells 
  in 
  

   briars. 
  It 
  is 
  somewhat 
  smaller 
  than 
  the 
  X. 
  Rossii, 
  the 
  body 
  black, 
  

   the 
  legs 
  and 
  antennae 
  pale, 
  the 
  latter 
  elongate 
  and 
  tapering, 
  and 
  

   the 
  operculum 
  materially 
  differing 
  from 
  that 
  of 
  the 
  pupa-case 
  of 
  

   the 
  former, 
  nor, 
  considering 
  the 
  very 
  different 
  economy 
  of 
  the 
  

   PoUstes 
  and 
  the 
  Odynerus, 
  can 
  this 
  parasite 
  coincide 
  in 
  habit 
  with 
  

   the 
  X. 
  Rossii, 
  or 
  transfer 
  its 
  progeny 
  through 
  the 
  medium 
  of 
  

   hybernating 
  females. 
  

  

  Found 
  in 
  the 
  same 
  localities 
  as 
  the 
  preceding. 
  

  

  H 
  yleclhrus 
  Sieboldli. 
  

   This 
  species 
  is 
  parasitic 
  on 
  the 
  Prosopis 
  variegata, 
  Panz., 
  several 
  

   specimens 
  of 
  the 
  latter, 
  producing 
  female 
  parasites, 
  having 
  been 
  

   captured 
  during 
  June, 
  July, 
  and 
  the 
  beginning 
  of 
  August, 
  on 
  the 
  

   flowers 
  of 
  the 
  wild 
  peppermint, 
  and 
  one 
  of 
  these 
  with 
  a 
  brood 
  of 
  

   hexapod 
  larvae 
  on 
  the 
  5th 
  July. 
  Another 
  of 
  the 
  same 
  bees, 
  bearing 
  

   the 
  exuviae 
  of 
  a 
  male 
  parasite, 
  was 
  taken 
  on 
  the 
  16th 
  July. 
  The 
  

   cephalothorax 
  in 
  the 
  female 
  of 
  this 
  species 
  is 
  distinguished 
  by 
  a 
  

   broad 
  yellow 
  longitudinal 
  band 
  dilated 
  towards 
  the 
  apex, 
  and 
  by 
  a 
  

  

  