﻿The 
  British 
  Species 
  of 
  Andrena 
  and 
  Nomada. 
  301 
  

  

  71. 
  (72) 
  If 
  the 
  insect 
  be 
  viewed 
  from 
  beneath 
  parts 
  of 
  the 
  sides 
  

  

  of 
  the 
  thorax 
  have 
  more 
  or 
  less 
  black 
  hairs 
  : 
  the 
  hairs 
  

   on 
  part 
  of 
  the 
  hind 
  trochanter 
  more 
  or 
  less 
  (and 
  often 
  

   those 
  on 
  the 
  coxae 
  and 
  the 
  curled 
  ones 
  of 
  the 
  floccus) 
  

   black 
  or 
  at 
  least 
  sordid; 
  facial 
  hairs 
  often 
  black. 
  

  

  gwynana 
  and 
  var. 
  bicolor. 
  

  

  72. 
  (71) 
  Sides 
  of 
  thorax 
  and 
  trochanters 
  with 
  pale 
  hairs 
  only; 
  

  

  floccus 
  pale. 
  

  

  73. 
  (74) 
  Clypeus 
  with 
  a 
  faint 
  longitudinal 
  median 
  impressed 
  line 
  

  

  on 
  its 
  basal 
  part, 
  quite 
  noticeable 
  in 
  some 
  aspects. 
  

  

  angustior. 
  

  

  74. 
  (73) 
  Clypeus 
  without 
  an 
  impressed 
  line, 
  sometimes 
  with 
  a 
  

  

  slight 
  smooth 
  one, 
  not 
  impressed. 
  

  

  gwynana 
  var. 
  bicolor 
  ab. 
  

  

  75. 
  (70) 
  A 
  large 
  species, 
  the 
  puncturation 
  of 
  the 
  basal 
  abdominal 
  

  

  segment 
  is 
  distinct 
  on 
  the 
  apical 
  portion, 
  and 
  though 
  

   the 
  punctures 
  are 
  finer 
  and 
  less 
  numerous 
  than 
  more 
  

   basally 
  they 
  come 
  rather 
  near 
  to 
  the 
  apical 
  margin 
  

   itself 
  nigroaenea. 
  

  

  76. 
  (57) 
  Scopa 
  not 
  forming 
  a 
  distinctly 
  yellow 
  or 
  golden 
  fringe 
  

  

  above 
  the 
  tibiae, 
  often 
  dark, 
  more 
  rarely 
  greyish 
  (from 
  

   a 
  mixture 
  of 
  pale 
  and 
  dark 
  hairs) 
  or 
  nearly 
  white 
  and 
  

   viewed 
  in 
  the 
  natural 
  position 
  from 
  above 
  with 
  the 
  

   naked 
  eye 
  not 
  conspicuously 
  golden, 
  yellow, 
  or 
  red. 
  

   Hind 
  tibiae 
  never 
  translucent 
  red 
  or 
  yellow 
  in 
  any 
  

   species. 
  

  

  77. 
  (86) 
  Large 
  siJecies, 
  the 
  abdomen 
  nearly 
  wholly 
  shining 
  and 
  

  

  glabrous 
  above 
  to 
  the 
  naked 
  eye 
  (except 
  that 
  in 
  one 
  

   species 
  some 
  of 
  the 
  segments 
  bear 
  in 
  parts 
  some 
  white 
  

   tomentum 
  in 
  fresh 
  examples), 
  the 
  apices 
  of 
  the 
  seg- 
  

   ments 
  never 
  with 
  apical 
  bands 
  or 
  lateral 
  streaks 
  of 
  

   dense 
  short 
  white 
  hairs, 
  forming 
  a 
  distinct 
  pattern. 
  

  

  78. 
  (83) 
  Thorax 
  with 
  bright 
  brown 
  or 
  fulvous 
  hairs. 
  

  

  79. 
  (80) 
  Under 
  parts 
  of 
  thorax 
  and 
  whole 
  of 
  the 
  scopae 
  with 
  black 
  

  

  hairs, 
  basal 
  abdominal 
  segment 
  finely 
  and 
  not 
  very 
  

   closely 
  punctured 
  thoracica. 
  

  

  80. 
  (79) 
  Under 
  parts 
  of 
  thorax 
  and 
  the 
  scopae 
  beneath 
  with 
  white 
  

  

  or 
  almost 
  white 
  hairs; 
  basal 
  segment 
  very 
  densely 
  

   punctured, 
  the 
  2nd 
  and 
  3rd 
  with 
  some 
  dense 
  white 
  

   tomentum 
  or 
  short 
  hairs 
  visible 
  at 
  least 
  at 
  the 
  sides 
  

   except 
  in 
  much-worn 
  examples. 
  

  

  81. 
  (82) 
  Face 
  beneath 
  the 
  antennae 
  with 
  pale 
  hairs. 
  . 
  . 
  nitida. 
  

  

  82. 
  (81) 
  Face 
  beneath 
  the 
  antennae 
  with 
  black 
  or 
  dark 
  fuscous 
  

  

  hairs 
  nitida 
  var. 
  baltica. 
  

  

  