﻿508 
  Mr. 
  T. 
  D. 
  A. 
  Cockerell 
  — 
  Descriptions 
  and 
  

  

  This 
  is 
  easily 
  known 
  from 
  the 
  male 
  of 
  H. 
  dampieri 
  by 
  the 
  

   smaller 
  size, 
  much 
  shorter 
  autennse^ 
  and 
  absence 
  of 
  a 
  yellow 
  

   band 
  on 
  clypeus. 
  

  

  Hab. 
  Brisbane, 
  May 
  13, 
  1912 
  [H. 
  Hacker, 
  Queensl. 
  INfus. 
  

   65). 
  

  

  Halictus 
  hicingulatus 
  , 
  Smith. 
  

  

  ? 
  .—Sydney, 
  N.S.W., 
  Nov. 
  29 
  and 
  Dec. 
  1, 
  1910 
  {Frogyatt, 
  

   131, 
  119) 
  ; 
  Kentlmrst, 
  N.S.W., 
  Feb. 
  1904 
  (Gallard 
  ; 
  Frog- 
  

   gatt 
  coll. 
  126) 
  ; 
  Brisbane, 
  Nov. 
  5 
  and 
  25, 
  1905 
  (Froggatt 
  

   coll. 
  166, 
  167). 
  

  

  The 
  male 
  from 
  Kelvin 
  Grove, 
  Brisbane, 
  Nov. 
  27, 
  1911 
  

   {Hacker 
  ; 
  Queensl. 
  Mus. 
  46), 
  is 
  like 
  H. 
  leai, 
  except 
  that 
  the 
  

   abdomen 
  is 
  black, 
  without 
  bands 
  or 
  spots. 
  

  

  Halictus 
  2^erau!itralis, 
  Cockerell. 
  

  

  Sydney, 
  N.S.W., 
  Dec. 
  1, 
  1910 
  {Froggatt, 
  113, 
  130); 
  

   Stradbroke 
  I. 
  {Hacker, 
  Queensl. 
  Mus. 
  53). 
  

  

  Halictus 
  tertius, 
  Dalla 
  Torre 
  {rujipes, 
  Sm.). 
  

  

  Croydon 
  {8. 
  W. 
  Fulton, 
  Nat. 
  Mus. 
  Victoria, 
  267, 
  268). 
  

  

  With 
  the 
  above 
  material 
  before 
  me 
  I 
  am 
  able 
  to 
  revise 
  the 
  

   H. 
  hicingulatus 
  group, 
  and 
  separate 
  the 
  females 
  of 
  the 
  species 
  

   as 
  follows 
  : 
  — 
  

  

  Wings 
  reddish, 
  costal 
  region 
  not 
  blackened 
  ; 
  

   disc 
  of 
  mesotliorax 
  finely 
  and 
  densely, 
  but 
  

   distinctly 
  pimctiired 
  1. 
  

  

  Wings 
  witli 
  the 
  costal 
  region 
  conspicuously 
  

   suffused 
  with 
  blackish 
  ; 
  mesothorax 
  diffe- 
  

   rently 
  sculptured 
  2. 
  

  

  1, 
  Hind 
  margins 
  of 
  abdominal 
  segments 
  hardly 
  or 
  

  

  not 
  reddened 
  hicingulatus, 
  Smith. 
  

  

  Hind 
  margins 
  of 
  abdominal 
  segments 
  broadly 
  

  

  ferruginous 
  hicingulatus, 
  var. 
  leai 
  

  

  2. 
  Disc 
  of 
  mesothorax 
  glaucous, 
  shining, 
  sparsely 
  [(^. 
  leai, 
  Ckll.j. 
  

  

  punctured 
  ; 
  scape 
  and 
  lower 
  margin 
  of 
  

  

  clypeus 
  dark 
  or 
  obscure 
  reddish 
  tertitis, 
  D. 
  T. 
  

  

  Disc 
  of 
  mesothorax 
  dull, 
  appearing 
  minutely 
  

   granular 
  under 
  a 
  leusj 
  scape 
  bright 
  ferru- 
  

   ginous, 
  lower 
  margin 
  of 
  clypeus 
  broadly 
  

   red 
  2^erausfralis, 
  Ckll. 
  

  

  H. 
  peraustralis 
  has 
  a 
  patch 
  of 
  very 
  bright 
  orange 
  tomentura 
  

   on 
  the 
  postsciitellum, 
  which 
  is 
  absent 
  from 
  H. 
  tertius. 
  In 
  

   1904 
  I 
  placed 
  tertius 
  as 
  a 
  synonym 
  of 
  bicingidatus, 
  having 
  

   compared 
  specimens 
  in 
  the 
  British 
  Museum. 
  Smith 
  evi- 
  

   dently 
  confused 
  the 
  species 
  of 
  this 
  group, 
  the 
  types 
  of 
  the 
  

  

  