﻿Manchester 
  Memoirs, 
  Vol. 
  xli. 
  (1897), 
  No. 
  4. 
  143 
  

  

  beyond 
  the 
  middle. 
  Antenna; 
  black, 
  the 
  scape 
  yellow 
  

   beneath, 
  sparsely 
  covered 
  with 
  long 
  white 
  hairs. 
  Mandi- 
  

   bles 
  yellow, 
  the 
  apex 
  black. 
  Thorax 
  covered, 
  except 
  on 
  

   the 
  scutellum, 
  with 
  long 
  hoary 
  hair 
  ; 
  the 
  scutellum 
  closely 
  

   and 
  rather 
  finely 
  punctured, 
  except 
  in 
  the 
  middle. 
  Legs 
  

   black 
  ; 
  the 
  femora 
  sparsely 
  in 
  front 
  bearing 
  white 
  hairs 
  ; 
  

   all 
  the 
  tibiae 
  in 
  front 
  and 
  the 
  four 
  front 
  tarsi 
  in 
  front 
  

   thickly 
  covered 
  with 
  silvery 
  white 
  hairs 
  ; 
  the 
  hinder 
  tarsi 
  

   thickly 
  covered 
  with 
  black 
  stiff 
  hairs. 
  Wings 
  clear 
  hyaline 
  ; 
  

   the 
  nervures 
  black 
  ; 
  the 
  second 
  cubital 
  cellule 
  at 
  the 
  top 
  

   is 
  as 
  wide 
  as 
  the 
  space 
  bounded 
  by 
  the 
  first 
  transverse 
  

   cubital 
  and 
  the 
  first 
  recurrent 
  nervure 
  ; 
  the 
  second 
  

   recurrent 
  nervure 
  is 
  almost 
  interstitial. 
  Abdomen 
  black 
  ; 
  

   the 
  ventral 
  segments 
  more 
  or 
  less 
  piceous; 
  the 
  dorsal 
  

   segments 
  fringed 
  with 
  depressed 
  silvery 
  hair. 
  

  

  The 
  c? 
  wants 
  the 
  black 
  marks 
  on 
  the 
  yellow 
  clypeus 
  ; 
  

   the 
  flagellum 
  is 
  brownish 
  beneath 
  ; 
  the 
  apical 
  ventral 
  

   segment 
  is 
  deeply 
  furrowed 
  down 
  the 
  middle, 
  and 
  the 
  

   sides 
  are 
  also 
  deeply 
  and 
  more 
  widely 
  furrowed; 
  the 
  

   bounding 
  keels 
  being 
  acute, 
  stout 
  ; 
  the 
  space 
  between 
  

   them 
  in 
  the 
  centre 
  slightly 
  hollowed. 
  

  

  Agrees 
  with 
  A 
  . 
  cincta 
  in 
  form 
  and 
  general 
  coloration 
  ; 
  

   but 
  is 
  smaller 
  ; 
  the 
  hairs 
  on 
  the 
  head 
  and 
  thorax 
  hoary, 
  

   not 
  fulvous 
  ; 
  and 
  the 
  fescias 
  on 
  the 
  abdomen 
  are 
  pale 
  

   silvery, 
  not 
  blue. 
  

  

  SOCIALES. 
  

  

  Trigona 
  bengalensis, 
  sp. 
  nov. 
  

  

  Nigra, 
  nitida 
  ; 
  antcnnis 
  flavo-testaceis 
  ; 
  abdominis 
  hasi 
  

   late 
  brunnco 
  ; 
  alis 
  hyalinis. 
  2. 
  Long. 
  3 
  mm. 
  

  

  Hab. 
  Barrackpore 
  (Rothney), 
  in 
  old 
  tree 
  stumps. 
  

  

  Head 
  black, 
  shining, 
  the 
  face 
  thickly 
  covered 
  with 
  

   white 
  pubescence, 
  the 
  mandibles 
  and 
  palpi 
  rufo-testaceous. 
  

   Antennae 
  entirely 
  rufo-testaceous. 
  Thorax 
  shining, 
  im- 
  

   punctate 
  ; 
  the 
  pleuras 
  thickly 
  covered 
  with 
  long 
  white 
  

  

  