﻿The 
  British 
  Species 
  of 
  Andrena 
  and 
  Nomada. 
  309 
  

  

  40. 
  (35) 
  Scutellum 
  with 
  red 
  spots 
  or 
  red 
  marking. 
  

  

  41. 
  (42) 
  Yellow 
  markings 
  of 
  2nd 
  and 
  3rd 
  abdominal 
  segments 
  

  

  sometimes 
  forming 
  complete 
  bands 
  and 
  never 
  both 
  

   interrupted 
  for 
  a 
  space 
  equal 
  to 
  one-third 
  the 
  width 
  of 
  

  

  the 
  segment 
  ruficornis, 
  ab. 
  

  

  (Fringe 
  beneath 
  middle 
  femora 
  long; 
  mandibles 
  pointed 
  

   at 
  apex.) 
  

  

  42. 
  (41) 
  Yellow 
  markings 
  on 
  each 
  side 
  of 
  2nd 
  and 
  3rd 
  segments 
  

  

  well 
  separated 
  from 
  one 
  another 
  by 
  a 
  distance 
  equal 
  

   to 
  about 
  one-third 
  the 
  width 
  of 
  the 
  segment 
  viewed 
  

   dorsally 
  or 
  still 
  more 
  widely 
  than 
  this. 
  . 
  . 
  hillana. 
  

   (Fringe 
  beneath 
  the 
  middle 
  femora 
  short, 
  not 
  very 
  different 
  

   from 
  that 
  beneath 
  the 
  hind 
  ones; 
  mandibles 
  in 
  some 
  

   aspects 
  truncate 
  at 
  apex.) 
  

  

  43. 
  (34) 
  Scape 
  pale 
  beneath 
  (or 
  in 
  front) 
  or 
  at 
  least 
  with 
  a 
  con- 
  

  

  siderable 
  pale 
  area. 
  

  

  44. 
  (55) 
  Middle 
  femora 
  with 
  a 
  distinct 
  fringe 
  beneath. 
  

  

  45. 
  (48) 
  Front 
  tibiae 
  without 
  a 
  black 
  or 
  dark 
  fuscous 
  marking 
  on 
  

  

  their 
  outer 
  (or 
  posterior) 
  surface. 
  

  

  46. 
  (47) 
  The 
  whole 
  clypeus 
  and 
  front 
  of 
  the 
  scaj^e 
  of 
  the 
  antennae 
  

  

  cream-coloured, 
  mandibles 
  pointed 
  at 
  the 
  tips. 
  baccata. 
  

  

  47. 
  (46) 
  The 
  whole 
  of 
  the 
  clypeus 
  and 
  of 
  the 
  front 
  of 
  the 
  scape 
  not 
  

  

  cream-coloured; 
  manchbles 
  truncate 
  at 
  apex 
  in 
  some 
  

   aspects. 
  hillana 
  var. 
  ochrostoma. 
  

  

  48. 
  (45) 
  Front 
  tibiae 
  with 
  a 
  dark 
  marking 
  posteriorly. 
  

  

  49. 
  (50) 
  Spots 
  of 
  2nd 
  abdominal 
  segment 
  well 
  separated, 
  by 
  a 
  space 
  

  

  generally 
  about 
  one-third 
  to 
  one-fifth 
  the 
  width 
  of 
  its 
  base, 
  

   spots 
  of 
  3rd 
  segment 
  more 
  widely 
  separated 
  than 
  these, 
  

   and 
  blunt 
  or 
  truncate 
  inwardly; 
  fringe 
  beneath 
  the 
  

   middle 
  femora 
  short 
  and 
  dense 
  and 
  quite 
  unlike 
  that 
  

  

  on 
  the 
  front 
  ones. 
  bucephalae. 
  

  

  (Antennae 
  unusually 
  long 
  and 
  slender; 
  the 
  scutellum 
  

   without 
  red 
  spots.) 
  

  

  50. 
  (49) 
  Abdominal 
  pattern 
  or 
  segment 
  1 
  and 
  2 
  rarely 
  resembling 
  

  

  the 
  above, 
  if 
  approaching 
  it, 
  then 
  the 
  middle 
  femora 
  have 
  

   a 
  long 
  fringe 
  beneath 
  not 
  differing 
  greatly 
  from 
  the 
  

   front 
  ones 
  in 
  this 
  respect. 
  

  

  51. 
  (52) 
  Abdominal 
  bands 
  on 
  segments 
  2-5 
  all 
  entire; 
  the 
  yellow 
  

  

  apical 
  band 
  on 
  the 
  face 
  not 
  continued 
  back 
  as 
  an 
  

   orbital 
  line 
  nearly 
  as 
  far 
  as 
  the 
  insertion 
  of 
  the 
  antennae. 
  

  

  signata. 
  

  

  52. 
  (57) 
  If 
  the 
  abdominal 
  bands 
  on 
  segments 
  2-5 
  are 
  all 
  entire 
  then 
  

  

  the 
  yeUow 
  facial 
  marking 
  is 
  continued 
  back 
  along 
  the 
  

   orbits 
  as 
  far 
  as 
  the 
  line 
  of 
  the 
  insertion 
  of 
  the 
  antennae. 
  

  

  