﻿512 
  ]\lr. 
  T. 
  D. 
  A. 
  Cockerell 
  — 
  Descriptions 
  and 
  

  

  Halictus 
  seducius, 
  sp. 
  n. 
  

  

  $ 
  . 
  — 
  Length 
  about 
  10 
  ram. 
  

  

  Black, 
  robust, 
  with 
  greyish-white 
  liair, 
  mixed 
  with 
  fuscous 
  

   on 
  vertex 
  and 
  mesothorax 
  ; 
  mandibles 
  entirely 
  black 
  ; 
  

   flagellum 
  very 
  obscurely 
  brownish 
  beneath. 
  Legs 
  black, 
  

   with 
  white 
  hair, 
  a 
  band 
  of 
  fuscous 
  hair 
  on 
  outer 
  side 
  of 
  hind 
  

   tibise; 
  clypeus 
  strongly 
  punctured 
  and 
  more 
  or 
  less 
  striate 
  ; 
  

   front 
  dull 
  ; 
  mesothorax 
  roughened 
  and 
  strongly 
  punctured, 
  

   dull, 
  with 
  the 
  disc 
  somewhat 
  shining 
  ; 
  scutellum 
  rough, 
  but 
  

   somewhat 
  shining 
  ; 
  area 
  of 
  metathorax 
  sharply 
  defined, 
  

   strongly 
  striate, 
  produced 
  and 
  pointed 
  in 
  middle 
  behind 
  ; 
  

   lateral 
  margins 
  of 
  truncation 
  sharply 
  defined 
  ; 
  hind 
  spur 
  

   appearing 
  simple, 
  its 
  hind 
  margin 
  very 
  feebly 
  microscopi- 
  

   cally 
  nodulose 
  ; 
  tegulse 
  piceous. 
  Wings 
  smoky 
  hyaline, 
  

   stigma 
  and 
  nervures 
  dusky 
  ferruginous 
  .; 
  second 
  s.m. 
  very 
  

   broad, 
  receiving 
  first 
  r. 
  n. 
  well 
  before 
  end 
  ; 
  outer 
  t.-c. 
  and 
  

   r. 
  n. 
  very 
  Aveak. 
  Abdomen 
  shining, 
  not 
  distinctly 
  punc- 
  

   tured, 
  lateral 
  basal 
  margins 
  of 
  second 
  and 
  third 
  segments 
  

   with 
  bands 
  of 
  white 
  tomentum, 
  and 
  a 
  similar 
  band 
  on 
  fourth 
  

   hidden 
  under 
  margin 
  of 
  third 
  ; 
  apex 
  with 
  fuscous 
  hair 
  ; 
  

   venter 
  with 
  glistening 
  white 
  hair, 
  but 
  no 
  curled 
  scopa. 
  

   Microscopical 
  characters 
  : 
  — 
  Front 
  striate-punctate 
  ; 
  sides 
  of 
  

   mesothorax 
  cancellate, 
  passing 
  in 
  the 
  middle 
  into 
  oblique 
  

   wave-like 
  rugae 
  ; 
  punctures 
  of 
  second 
  abdominal 
  segment 
  

   excessively 
  small, 
  now'here 
  dense. 
  

  

  Hab. 
  "Windsor, 
  Victoria, 
  1909" 
  (French; 
  Froggatt 
  

   coll. 
  93). 
  

  

  Resembles 
  H. 
  repr(Esentans, 
  Sm., 
  but 
  easily 
  known 
  by 
  the 
  

   sculpture 
  of 
  the 
  mesothorax. 
  The 
  microscopical 
  characters 
  

   and 
  larger 
  size 
  readily 
  separate 
  it 
  from 
  H. 
  gilesi, 
  Ckll. 
  

  

  Halictus 
  circumdatus, 
  sp. 
  n. 
  

  

  ? 
  . 
  — 
  Length 
  about 
  8| 
  mm. 
  

  

  Black, 
  shining, 
  with 
  thin 
  greyish-white 
  hair 
  ; 
  mandibles 
  

   red 
  apically 
  ; 
  fiagellum 
  dark, 
  with 
  a 
  very 
  faint 
  reddish 
  tint 
  

   beneath 
  ; 
  small 
  joints 
  of 
  tarsi 
  more 
  or 
  less 
  reddened 
  ; 
  hair 
  

   of 
  vertex 
  all 
  pale, 
  but 
  that 
  of 
  scutellum 
  and 
  mesothorax 
  

   mixed 
  with 
  fuscous; 
  head 
  broad; 
  clypeus 
  shining, 
  with 
  

   strong 
  irregular 
  punctures 
  ; 
  front 
  dull 
  in 
  middle, 
  glistening 
  

   at 
  sides 
  ; 
  mesothorax 
  shining, 
  strongly 
  but 
  not 
  very 
  densely 
  

   punctured 
  ; 
  scutellum 
  very 
  irregularly 
  punctured, 
  some 
  of 
  

   the 
  punctures 
  very 
  minute, 
  others 
  large, 
  and 
  a 
  median 
  slender 
  

   groove 
  ; 
  area 
  of 
  metathorax 
  concave, 
  shining, 
  strongly 
  

   longitudinally 
  plicate, 
  sharp-edged, 
  with 
  the 
  apical 
  marginal 
  

   area 
  smooth 
  and 
  shining, 
  depressed 
  in 
  middle 
  ; 
  mesopleura 
  

  

  