﻿Mr. 
  R. 
  E. 
  Turner 
  on 
  Fossorial 
  Ilymenoptera. 
  479 
  

  

  L 
  VI. 
  — 
  Notts 
  on 
  Fossorial 
  Ilymenoptera. 
  — 
  IV. 
  

  

  By 
  Rowland 
  E. 
  Turner, 
  E.Z.S., 
  F.E.S. 
  

  

  Remarks 
  on 
  the 
  Genus 
  Palarus. 
  

  

  The 
  following 
  remarks 
  are 
  founded 
  on 
  the 
  specimens 
  of 
  

   Palarus 
  in 
  the 
  National 
  Collection 
  at 
  South 
  Kensington, 
  

   which 
  I 
  have 
  recently 
  rearranged, 
  and 
  also 
  on 
  the 
  collection 
  

   of 
  Colonel 
  C. 
  G. 
  Nurse, 
  which 
  he 
  has 
  kindly 
  lent 
  to 
  me 
  for 
  

   the 
  purpose. 
  The 
  National 
  Collection, 
  though 
  recently 
  much 
  

   improved 
  by 
  the 
  purchase 
  of 
  the 
  Saunders 
  collection 
  and 
  by 
  

   specimens 
  from 
  Karachi 
  presented 
  by 
  Mr. 
  Comber, 
  is 
  still 
  

   poor, 
  especially 
  in 
  species 
  from 
  Asiatic 
  Russia. 
  The 
  species 
  

   with 
  which 
  1 
  am 
  acquainted, 
  together 
  with 
  a 
  few 
  others 
  

   which 
  are 
  sufficiently 
  well 
  described, 
  if 
  classified 
  according 
  to 
  

   the 
  apical 
  abdominal 
  segment 
  of 
  the 
  male, 
  fall 
  into 
  five 
  

   natural 
  groups 
  : 
  — 
  

  

  I. 
  Seventh 
  dorsal 
  segment 
  bifurcate 
  at 
  the 
  apex. 
  

  

  1. 
  P. 
  o'neili, 
  Brauns 
  ; 
  2. 
  P. 
  riifipes, 
  Latr. 
  ; 
  3. 
  P. 
  variegntiis, 
  

   Fabr. 
  ; 
  4. 
  P. 
  spinolce, 
  Sauss. 
  ; 
  5. 
  P. 
  fortistriolatus, 
  Cam. 
  ; 
  

   6. 
  P. 
  affinis, 
  Moraw. 
  ; 
  7. 
  P. 
  rothschildi, 
  Grib. 
  

  

  II. 
  Seventh 
  dorsal 
  segment 
  narrow 
  and 
  truncate 
  or 
  shallowly 
  emar- 
  

   ginate 
  at 
  the 
  apex. 
  

  

  1. 
  P. 
  indicus, 
  Nurse; 
  2. 
  P. 
  saundersi, 
  Morice 
  ; 
  3. 
  ? 
  P. 
  donga- 
  

   lensis, 
  Klug 
  ; 
  4. 
  ? 
  P. 
  aurantiacus, 
  Rad. 
  

  

  III. 
  Seventh 
  dorsal 
  segment 
  tridentate 
  at 
  the 
  apex. 
  

  

  1. 
  P. 
  fiineraritis, 
  Moraw. 
  ; 
  2. 
  P. 
  bisignatus, 
  Moraw.; 
  3. 
  P. 
  se- 
  

   raxensis, 
  Had. 
  ; 
  4. 
  P. 
  Icetus, 
  Klug 
  ; 
  5. 
  P. 
  fabius, 
  Nurse 
  ; 
  

   6. 
  P. 
  lepidus, 
  Klug 
  ; 
  7. 
  P. 
  nursei, 
  Turn. 
  ; 
  8. 
  P. 
  confusus, 
  

  

  Turn. 
  • 
  

  

  IV. 
  Seventh 
  dorsal 
  segment 
  truncate 
  at 
  the 
  apex, 
  with 
  lateral 
  spines 
  at 
  

  

  the 
  base. 
  

  

  1. 
  P. 
  orientalis, 
  Kohl; 
  2. 
  P. 
  latifrons, 
  Kohl. 
  

  

  V. 
  Seventh 
  dorsal 
  segment 
  broadly 
  subtruncate 
  at 
  the 
  apex, 
  without 
  

   lateral 
  spines. 
  

  

  1. 
  P. 
  comberi, 
  Turn. 
  

  

  The 
  third 
  group 
  is 
  also 
  distinguished 
  by 
  the 
  greater 
  dis- 
  

   tance 
  between 
  the 
  eyes 
  on 
  the 
  vertex. 
  P. 
  pentheri, 
  Brauns, 
  

   seems 
  to 
  form 
  a 
  sixth 
  group. 
  

  

  The 
  genus 
  is 
  isolated 
  among 
  the 
  Sphecoidea, 
  showing 
  no 
  

   near 
  relationship 
  to 
  any 
  other, 
  and 
  when 
  the 
  group 
  is 
  revised 
  

   can 
  hardly 
  be 
  associated 
  with 
  the 
  Larridaa. 
  Kohl 
  practically 
  

  

  