﻿The 
  British 
  Species 
  of 
  Andrena 
  and 
  Nomada. 
  261 
  

  

  may 
  remain 
  even 
  into 
  August 
  in 
  wet 
  and 
  cold 
  summers. 
  

   At 
  first 
  it 
  visits 
  daisies 
  and 
  dandelions 
  and 
  not 
  infrequently 
  

   buttercups 
  and 
  Veronica. 
  Later 
  it 
  is 
  particularly 
  attached 
  

   to 
  white 
  Umbelliferae, 
  and 
  it 
  is 
  much 
  attracted 
  by 
  Euphorbia 
  

   in 
  some 
  places. 
  No 
  Nomada 
  parasitises 
  it, 
  and 
  only 
  very 
  

   locally 
  or 
  one 
  may 
  say 
  rarely 
  is 
  it 
  stylopised, 
  though 
  it 
  is 
  

   found 
  thus 
  affected 
  in 
  localities 
  so 
  distant 
  as 
  Oxford, 
  

   Devon 
  and 
  Essex. 
  From 
  the 
  latter 
  county 
  Mr. 
  L. 
  Wal- 
  

   ford 
  kindly 
  sent 
  me 
  several 
  such 
  examples, 
  including 
  a 
  ^ 
  

   with 
  black 
  face 
  and 
  2 
  with 
  this 
  part 
  white-marked. 
  

  

  A. 
  tarsata 
  (analis) 
  is 
  a 
  local 
  bee, 
  and 
  probably 
  absent 
  

   from 
  those 
  counties 
  in 
  the 
  south 
  which 
  have 
  no 
  extensive 
  

   heaths 
  on 
  a 
  peat 
  or 
  sandy 
  soil. 
  It 
  is 
  still 
  found 
  just 
  out- 
  

   side 
  London, 
  as 
  well 
  as 
  on 
  the 
  more 
  distant 
  of 
  the 
  Surrey 
  

   commons, 
  and 
  commonly 
  in 
  Hants 
  and 
  Devon. 
  In 
  the 
  

   northern 
  counties 
  it 
  is 
  often 
  abundant, 
  and 
  it 
  occurs 
  (no 
  

   doubt 
  abundantly) 
  in 
  Scotland 
  and 
  Ireland. 
  It 
  is 
  ex- 
  

   tremely 
  fond 
  of 
  Polentilla, 
  gathering 
  most 
  of 
  its 
  pollen 
  from 
  

   this, 
  but 
  is 
  also 
  found 
  on 
  heather 
  and 
  Rubvs. 
  It 
  is 
  parasi- 
  

   tised 
  by 
  Nomada 
  tormentillae, 
  which 
  I 
  have 
  taken 
  entering 
  

   and 
  leaving 
  the 
  burrows 
  of 
  compact 
  and 
  pure 
  colonies 
  of 
  

   this 
  little 
  Andrena. 
  Probably 
  it 
  is 
  parasitised 
  also 
  by 
  

   N. 
  obtusifrons, 
  at 
  least 
  it 
  certainly 
  is 
  so, 
  if 
  one 
  trusts 
  old 
  

   records. 
  Smith, 
  entirely 
  misinterpreting 
  Kirby's 
  descrip- 
  

   tion, 
  appUed 
  the 
  name 
  xanthosticta 
  K. 
  to 
  that 
  species, 
  and 
  

   under 
  this 
  name 
  we 
  read 
  of 
  obtusifrons 
  as 
  being 
  parasitic 
  

   in 
  colonies 
  of 
  tarsata 
  in 
  the 
  north. 
  On 
  one 
  occasion 
  this 
  

   Nomada 
  was 
  taken 
  sparingly, 
  in 
  company 
  with 
  a 
  few 
  of 
  the 
  

   Andrena 
  in 
  N. 
  Devon, 
  but 
  not 
  at 
  the 
  burrows 
  of 
  the 
  latter, 
  

   and 
  it 
  is, 
  of 
  course, 
  possible 
  that 
  the 
  following 
  species 
  

   may 
  have 
  been 
  present, 
  but 
  overlooked. 
  

  

  A. 
  coitana 
  is 
  not 
  infrequently 
  found 
  in 
  company 
  with 
  the 
  

   preceding, 
  but 
  is, 
  I 
  think, 
  more 
  widely 
  distributed 
  in 
  the 
  

   south, 
  though 
  quite 
  local. 
  It 
  is 
  common 
  in 
  some 
  places 
  

   in 
  the 
  north 
  of 
  England, 
  and 
  occurs 
  in 
  Scotland. 
  In 
  the 
  

   south 
  it 
  frequently 
  occurs 
  on 
  the 
  coast, 
  and 
  it 
  is 
  probably 
  

   to 
  be 
  found 
  somewhere 
  in 
  most 
  of 
  the 
  counties. 
  It 
  occurs 
  

   in 
  the 
  Cambridgeshire 
  fens, 
  and 
  at 
  Oxford, 
  and 
  in 
  Devon- 
  

   shire 
  on 
  Dartmoor 
  and 
  Exmoor, 
  as 
  well 
  as 
  at 
  lower 
  eleva- 
  

   tions. 
  It 
  is 
  common 
  also 
  on 
  some 
  of 
  the 
  Surrey 
  commons 
  

   and 
  in 
  the 
  New 
  Forest, 
  and 
  is 
  found 
  in 
  Norfolk, 
  Essex 
  and 
  

   Kent 
  in 
  the 
  east. 
  It 
  is 
  partial 
  to 
  the 
  flowers 
  of 
  bramble, 
  

   and 
  in 
  some 
  localities 
  (like 
  A. 
  gwynana 
  bicolor 
  and 
  Cilissa 
  

   haemorrhoidalis) 
  visits 
  the 
  flowers 
  of 
  Campanula 
  and 
  

  

  