﻿310 
  Mr. 
  R. 
  C. 
  L. 
  Perkins 
  on 
  

  

  (N.B. 
  — 
  The 
  band 
  of 
  the 
  2nd 
  segment 
  at 
  least 
  is 
  usually 
  

   divided 
  in 
  the 
  middle 
  by 
  a 
  thin 
  streak 
  or 
  else 
  indented 
  

   above 
  by 
  a 
  wedge 
  of 
  ground-colour, 
  and 
  some 
  of 
  these 
  

   varieties 
  resemble 
  signata 
  in 
  lacking 
  the 
  long 
  yellow 
  

   orbital 
  lines. 
  The 
  2nd 
  abdominal 
  band 
  of 
  signnta 
  is 
  

   not 
  thus 
  slightly 
  divided 
  or 
  partially 
  divided.) 
  

  

  53. 
  (54)* 
  Wings 
  light 
  shining 
  fuscous, 
  appearing 
  distinctly 
  flaves- 
  

  

  cent 
  ; 
  fringe 
  of 
  middle 
  femora 
  beneath 
  usually 
  decidedly 
  

   shorter 
  flava. 
  

  

  54. 
  (53) 
  Wings 
  more 
  greyish; 
  fringe 
  of 
  middle 
  femora 
  beneath 
  

  

  generally 
  longer 
  ruficornis. 
  

  

  55. 
  (44) 
  Middle 
  femora 
  beneath 
  with 
  the 
  hairs 
  so 
  extremely 
  short 
  

  

  that 
  a 
  fringe 
  is 
  hardly 
  perceptible, 
  the 
  front 
  femora 
  are 
  

   similar, 
  but 
  a 
  few 
  longer 
  hairs 
  may 
  be 
  observed. 
  

  

  conjungens. 
  

  

  (Antennae 
  very 
  long 
  and 
  slender, 
  the 
  3rd 
  joint 
  viewed 
  

  

  from 
  in 
  front 
  extremely 
  short; 
  where 
  shortest, 
  not 
  

  

  half 
  the 
  length 
  of 
  the 
  very 
  elongate 
  4th, 
  which 
  appears 
  

  

  twice, 
  or 
  more 
  than 
  twice, 
  as 
  long 
  as 
  wide. 
  

  

  56. 
  (33) 
  Labrum 
  black 
  flavoguitata, 
  

  

  (Antennae 
  like 
  those 
  of 
  conjungens, 
  but 
  the 
  fringe 
  beneath 
  

   the 
  middle 
  femora 
  though 
  short 
  is 
  sufficiently 
  distinct; 
  

   the 
  abdominal 
  sjiots 
  are 
  usually 
  considerably 
  less 
  de- 
  

   veloped 
  and 
  the 
  average 
  size 
  is 
  much 
  less.) 
  

  

  57. 
  (32a) 
  Third 
  anteimal 
  joint 
  viewed 
  from 
  beneath 
  subequal 
  to 
  

  

  the 
  4th 
  ; 
  an 
  extremely 
  small 
  species. 
  . 
  . 
  . 
  furva. 
  

  

  Table 
  of 
  Nomada. 
  

  

  1. 
  (2) 
  Labrum 
  black, 
  the 
  mandibles 
  bidentate 
  at 
  the 
  apex. 
  

  

  fabriciana. 
  

   (8econd 
  and 
  3rd 
  abdominal 
  segments 
  with 
  a 
  small 
  yellow 
  

   spot 
  on 
  each 
  side, 
  one 
  or 
  both 
  pairs 
  of 
  which 
  may 
  be 
  

   wanting; 
  antennae, 
  except 
  in 
  rare 
  aberrations, 
  dis- 
  

   tinctive, 
  the 
  extreme 
  base 
  of 
  fiagellum 
  black, 
  following 
  

   joints 
  pale 
  as 
  also 
  the 
  apical 
  one, 
  the 
  joints 
  between 
  

   these 
  black.) 
  

  

  2. 
  (1) 
  If 
  the 
  labrum 
  is 
  black 
  the 
  mandibles 
  are 
  simple. 
  

  

  3. 
  (6) 
  Abdomen 
  with 
  no 
  yellow 
  spots 
  or 
  markings 
  ; 
  the 
  propodeum 
  

  

  is 
  copiously 
  pubescent 
  right 
  up 
  to 
  the 
  margins 
  of 
  the 
  

   anterior 
  area, 
  the 
  pubescence 
  not 
  forming 
  a 
  restricted 
  

   patch 
  or 
  tuft. 
  

  

  * 
  Owing 
  to 
  the 
  great 
  variation 
  in 
  the 
  colour 
  and 
  development 
  

   pf 
  both 
  spegies 
  I 
  cannot 
  give 
  more 
  satisfactory 
  characters. 
  

  

  