﻿The 
  British 
  Species 
  of 
  Andrena 
  and 
  Nomada. 
  299 
  

  

  45a. 
  (53) 
  Scopa 
  yellow 
  or 
  golden. 
  

  

  46. 
  (47) 
  Basal 
  abdominal 
  segment 
  with 
  distinctly 
  granulate 
  punc- 
  

  

  turation, 
  the 
  punctures 
  (or 
  many 
  of 
  them) 
  set 
  in 
  small 
  

   tubercles 
  or 
  granules; 
  hind 
  tibiae 
  dark 
  beneath 
  the 
  

   scopae 
  humilis. 
  

  

  47. 
  (46) 
  Basal 
  segment 
  usually 
  with 
  ordinary 
  punctures; 
  if 
  these 
  

  

  are 
  inclined 
  to 
  be 
  granulate 
  the 
  hind 
  tibiae 
  are 
  clear 
  

   yellow 
  beneath 
  their 
  scopae. 
  

   47a. 
  (48) 
  A 
  very 
  large 
  species 
  with 
  dark 
  wings, 
  the 
  basal 
  segment 
  

   with 
  sparse 
  and 
  very 
  remote 
  punctures. 
  . 
  hatiorfiana. 
  

   (Abdomen 
  either 
  black 
  or 
  more 
  or 
  less 
  red.) 
  

  

  48. 
  (47a) 
  Small 
  or 
  medium-sized 
  species, 
  or, 
  if 
  rather 
  large, 
  the 
  

  

  basal 
  abdominal 
  segment 
  has 
  a 
  dense 
  and 
  almost 
  even 
  

   puncturation. 
  

  

  49. 
  (52) 
  Hind 
  tibiae 
  and 
  tarsi 
  entirely 
  or 
  almost 
  entirely 
  clear 
  

  

  yellow. 
  

  

  50. 
  (51) 
  Mesonotum 
  and 
  scutellum 
  finely 
  rugose 
  all 
  over 
  under 
  a 
  

  

  strong 
  lens 
  and 
  dull 
  in 
  consequence. 
  . 
  . 
  chrysosceles. 
  

   (Intermediate 
  abdominal 
  segments 
  with 
  dense 
  white 
  apical 
  

   streaks.) 
  

  

  51. 
  (50) 
  Mesonotum 
  and 
  scutellum 
  conspicuously 
  shining 
  between 
  

  

  the 
  punctures 
  fulvago 
  

  

  (Scopal 
  fringe 
  above 
  the 
  tibiae 
  extraordinarily 
  long.) 
  

  

  52. 
  (49) 
  Hind 
  tibiae 
  dark 
  beneath 
  the 
  scopae 
  polita. 
  

  

  53. 
  (45a) 
  Scopa 
  forming 
  a 
  dark 
  or 
  sooty-grey 
  fringe 
  above 
  the 
  

  

  tibiae 
  when 
  these 
  are 
  viewed 
  on 
  the 
  inner 
  surface. 
  

  

  marginata. 
  

   (Abdominal 
  colour 
  very 
  variable, 
  from 
  nearly 
  all 
  black 
  to 
  

   nearly 
  all 
  yellow 
  through 
  banded 
  forms.) 
  

  

  54. 
  (45) 
  Appressed 
  hairs 
  of 
  5th 
  abdominal 
  segment 
  not 
  all 
  pale 
  

  

  yellow 
  or 
  golden, 
  often 
  dark, 
  sometimes 
  fuscous 
  with 
  

   golden 
  or 
  reddish 
  tinge 
  in 
  part, 
  or 
  the 
  segment 
  has 
  

   some 
  yellow 
  and 
  some 
  dark 
  hairs. 
  

  

  55. 
  (56) 
  A 
  small 
  species 
  with 
  red 
  2nd 
  and 
  3rd 
  segments 
  of 
  the 
  

  

  abdomen, 
  the 
  1st 
  and 
  2nd 
  very 
  distinctly 
  and 
  densely 
  

   (for 
  the 
  most 
  part 
  evenly) 
  punctured 
  all 
  over, 
  cingulata. 
  

  

  56. 
  (55) 
  Species 
  quite 
  unlike 
  the 
  preceding. 
  

  

  57. 
  (76) 
  Scopa 
  forming 
  a 
  yellow 
  or 
  golden 
  fringe 
  above 
  the 
  tibiae 
  

  

  when 
  these 
  are 
  viewed 
  inwardly, 
  seen 
  with 
  the 
  naked 
  

   eye 
  the 
  scopa 
  appears 
  conspicuously 
  red, 
  yellow 
  or 
  

   golden. 
  Hind 
  tibiae 
  in 
  some 
  of 
  the 
  species 
  clear 
  trans- 
  

   lucent 
  red 
  or 
  yellow. 
  

  

  58. 
  (59) 
  Whole 
  abdomen 
  very 
  densely 
  clothed 
  with 
  long 
  pubescence 
  

  

  (either 
  all 
  black 
  or 
  partly 
  or 
  even 
  almost 
  wholly 
  pale) 
  

  

  