﻿242 
  Mr. 
  R. 
  C. 
  L. 
  Perkins 
  on 
  

  

  others. 
  I 
  suspect 
  that 
  the 
  copious 
  second 
  brood 
  of 
  this 
  

   Nomada 
  previously 
  referred 
  to 
  was 
  bred 
  in 
  the 
  burrows 
  

   of 
  thoracica. 
  

  

  The 
  addition 
  of 
  A. 
  vaga 
  to 
  our 
  lists 
  was 
  made 
  by 
  myself 
  

   on 
  the 
  discovery 
  of 
  a 
  very 
  ancient 
  specimen 
  of 
  the 
  (^ 
  in 
  

   Walcott's 
  British 
  Collection, 
  where 
  it 
  was 
  named 
  A. 
  polita. 
  

   I 
  have 
  little 
  doubt 
  that 
  this 
  specimen 
  was 
  taken 
  in 
  Eng- 
  

   land. 
  It 
  is 
  in 
  some 
  N. 
  European 
  localities 
  the 
  common 
  

   host 
  of 
  Nomada 
  lathburiana. 
  

  

  The 
  beautiful 
  bee, 
  A. 
  cineraria, 
  is 
  a 
  local 
  species, 
  but 
  

   of 
  very 
  wide 
  distribution 
  both 
  in 
  the 
  north 
  and 
  south. 
  

   It 
  is 
  mostly 
  found 
  in 
  cultivated 
  districts 
  or 
  meadowland, 
  

   and 
  is 
  particularly 
  attached 
  to 
  the 
  dandehon, 
  though 
  it 
  is 
  

   sometimes 
  fomid 
  on 
  heaths. 
  At 
  times 
  it 
  forms 
  large 
  

   compact 
  colonies 
  in 
  trodden 
  paths, 
  but 
  often 
  its 
  large 
  

   burrows 
  may 
  be 
  found 
  singly 
  or 
  two 
  or 
  three 
  together 
  

   scattered 
  over 
  pasture-fields 
  of 
  large 
  acreage, 
  mixed 
  with 
  

   those 
  of 
  A. 
  nitida 
  and 
  nigroaenea 
  and 
  such 
  species 
  as 
  

   habitually 
  frequent 
  meadows, 
  where 
  there 
  is 
  an 
  abun- 
  

   dance 
  of 
  dandelion 
  flowers 
  in 
  early 
  spring. 
  Not 
  that 
  it 
  is 
  

   in 
  any 
  way 
  restricted 
  to 
  these 
  flowers, 
  for 
  it 
  is 
  sometimes 
  

   seen 
  in 
  numbers 
  in 
  gardens 
  on 
  Brassica, 
  and 
  the 
  flowers 
  of 
  

   fruit-trees, 
  and 
  elsewhere 
  on 
  hedgerow 
  plants 
  such 
  as 
  the 
  

   blackthorn, 
  wild 
  cherry, 
  Salix, 
  and 
  even 
  on 
  the 
  daisy. 
  

  

  Nomada 
  lathburiana 
  is 
  the 
  special 
  parasite 
  of 
  this 
  An- 
  

   drena, 
  but 
  it 
  is 
  much 
  scarcer 
  than 
  its 
  host, 
  and 
  is 
  entirely 
  

   absent 
  from 
  many 
  localities 
  where 
  the 
  latter 
  is 
  abundant. 
  

   I 
  have 
  never 
  seen 
  nor 
  heard 
  of 
  a 
  stylopised 
  example 
  of 
  

   cineraria. 
  On 
  the 
  Continent 
  it 
  sometimes 
  produces 
  a 
  

   second 
  brood, 
  but 
  in 
  Devonshire, 
  where 
  in 
  some 
  seasons 
  

   it 
  occurs 
  commonly 
  in 
  March, 
  no 
  specimen 
  of 
  a 
  second 
  

   generation 
  has 
  ever 
  been 
  observed. 
  

  

  A. 
  nigroaenea 
  is 
  a 
  most 
  abundant 
  bee, 
  ubiquitous 
  in 
  

   the 
  south 
  and 
  common 
  in 
  the 
  northern 
  counties. 
  Like 
  

   its 
  allies 
  it 
  is 
  very 
  partial 
  to 
  dandelions, 
  but 
  affects 
  the 
  

   most 
  varied 
  plants. 
  Sallow, 
  blackthorn, 
  flowering 
  fruit- 
  

   trees 
  and 
  holly 
  often 
  attract 
  it 
  in 
  swarms, 
  not 
  to 
  mention 
  

   Brassica, 
  Sisymbrium 
  and 
  a 
  host 
  of 
  other 
  lesser 
  plants. 
  

   It 
  appears 
  very 
  early 
  in 
  the 
  spring 
  and 
  continues 
  on 
  the 
  

   wing 
  for 
  a 
  long 
  time, 
  especially 
  in 
  cold 
  summers, 
  when 
  it 
  

   may 
  be 
  seen 
  even 
  well 
  into 
  August, 
  but 
  it 
  is 
  never 
  double- 
  

   brooded 
  so 
  far 
  as 
  we 
  'know. 
  Nomada 
  goodeniana 
  is 
  its 
  

   constant 
  and 
  often 
  extremely 
  abundant 
  parasite, 
  and 
  

   very 
  large 
  examples 
  of 
  N. 
  fabriciana 
  have 
  been 
  taken 
  at 
  

  

  