﻿Manchester 
  Memoirs, 
  Vol. 
  xlii. 
  (1898), 
  No. 
  11 
  53 
  

  

  broader 
  than 
  it, 
  largely 
  developed 
  behind 
  the 
  eyes 
  ; 
  the 
  

   apex 
  of 
  the 
  clypeus 
  in 
  $ 
  produced 
  into 
  two 
  stout 
  teeth 
  ; 
  

   the 
  sides 
  of 
  the 
  head, 
  on 
  the 
  lower 
  side 
  behind, 
  largely 
  

   triangularly 
  produced. 
  Labial 
  palpi 
  4-, 
  maxillary 
  6- 
  

   jointed 
  ; 
  the 
  first 
  joint 
  of 
  maxillary 
  half 
  the 
  length 
  of 
  the 
  

   2nd; 
  the 
  2nd 
  to 
  5th 
  almost 
  equal 
  in 
  length; 
  the 
  6th 
  a 
  

   little 
  longer. 
  Mandibles 
  in 
  $ 
  very 
  large, 
  curved, 
  dilated 
  

   towards 
  the 
  apex, 
  which 
  is 
  itself 
  prolonged 
  into 
  a 
  long, 
  

   stout 
  tooth 
  issuing 
  from 
  the 
  middle 
  of 
  the 
  dilated 
  part 
  ; 
  

   the 
  middle 
  with 
  a 
  long 
  furrow 
  in 
  the 
  centre. 
  Labrum 
  at 
  

   top 
  ending 
  in 
  a 
  triangular 
  point; 
  the 
  maxilla 
  moderately 
  

   large; 
  the 
  2-5 
  joints 
  almost 
  equal 
  in 
  length, 
  the 
  6th 
  joint 
  

   a 
  little 
  longer 
  than 
  the 
  first. 
  Body 
  in 
  ? 
  and 
  $ 
  moderately, 
  

   the 
  legs 
  densely, 
  pilose; 
  the 
  claws 
  with 
  a 
  stout 
  tooth 
  in 
  

   the 
  middle. 
  Mesonotum 
  with 
  a 
  narrow, 
  but 
  distinct, 
  

   furrow 
  down 
  the 
  sides, 
  but 
  not 
  reaching 
  the 
  base 
  or 
  apex, 
  

   and 
  a 
  less 
  distinct, 
  shallower 
  furrow 
  down 
  the 
  middle. 
  

   Median 
  segment 
  without 
  a 
  distinct 
  enclosed 
  or 
  striated 
  

   space 
  in 
  the 
  centre 
  at 
  the 
  base. 
  Prothorax 
  transverse 
  at 
  

   the 
  top, 
  sharply 
  raised 
  there 
  and 
  at 
  the 
  sides. 
  Pterostigma 
  

   moderately 
  large 
  and 
  elongate; 
  the 
  first 
  cubital 
  cellule 
  

   somewhat 
  longer 
  than 
  the 
  second 
  and 
  third 
  cellules 
  united; 
  

   the 
  third 
  cubital 
  cellule 
  narrow, 
  not 
  much 
  more 
  than 
  half 
  

   the 
  length 
  of 
  the 
  first; 
  the 
  first 
  recurrent 
  nervure 
  almost 
  

   interstitial 
  ; 
  the 
  second 
  received 
  close 
  to 
  the 
  third 
  trans- 
  

   verse 
  cubital 
  nervure. 
  Abdomen 
  smooth 
  and 
  shining; 
  the 
  

   apical 
  segments 
  densely 
  covered 
  with 
  long 
  hair 
  ; 
  the 
  

   ventral 
  segments 
  densely 
  fringed 
  with 
  long 
  hair; 
  the 
  

   apical 
  segments 
  with 
  a 
  rima, 
  as 
  in 
  Halictus. 
  

  

  The 
  presence 
  of 
  a 
  rima 
  on 
  the 
  apical 
  abdominal 
  seg- 
  

   ment 
  and 
  the 
  form 
  of 
  the 
  alar 
  neuration 
  ally 
  this 
  genus 
  

   to 
  Halictus, 
  nor 
  is 
  the 
  structure 
  of 
  the 
  trophi 
  enough 
  to 
  

   separate 
  it 
  generically 
  from 
  that 
  genus, 
  while 
  the 
  ? 
  again 
  

   agrees 
  with 
  it 
  in 
  having 
  an 
  elongated 
  face; 
  the 
  median 
  

   segment 
  in 
  both 
  sexes 
  wants 
  the 
  enclosed 
  space 
  at 
  the 
  

  

  