﻿246 
  Mr. 
  R. 
  C. 
  L. 
  Perkins 
  on 
  

  

  found 
  on 
  Rubus, 
  but 
  it 
  has 
  been 
  taken 
  on 
  white 
  Umbelhferae. 
  

   Occasionally 
  Nomada 
  alternata 
  parasitises 
  this 
  species, 
  and 
  

   hke 
  it 
  produces 
  a 
  second 
  brood. 
  Stylopised 
  examples 
  

   occur, 
  but 
  much 
  less 
  often 
  than 
  in 
  trimmerana. 
  

  

  A. 
  rosae 
  {eximia= 
  first 
  brood) 
  has 
  been 
  much 
  confused 
  

   with 
  the 
  preceding, 
  the 
  two 
  not 
  infrequently 
  being 
  found 
  in 
  

   company 
  on 
  the 
  same 
  flowers. 
  But 
  in 
  some 
  localities 
  the 
  one 
  

   is 
  found 
  quite 
  apart 
  from 
  the 
  other, 
  as 
  appears 
  to 
  be 
  the 
  case 
  

   in 
  Monmouthshire 
  and 
  parts 
  of 
  S. 
  Wales, 
  where 
  only 
  rosae 
  

   has 
  occurred. 
  True 
  rosae 
  is 
  also 
  found 
  in 
  Surrey, 
  Kent, 
  

   Sussex, 
  Hants 
  and 
  Devon, 
  and 
  no 
  doubt 
  in 
  a 
  number 
  of 
  

   other 
  comities, 
  but 
  is 
  local 
  and 
  often 
  rare. 
  The 
  first 
  brood 
  

   visits 
  sallow 
  and 
  Primus, 
  and 
  where 
  these 
  have 
  been 
  

   gromng 
  in 
  fine 
  flower 
  side 
  by 
  side, 
  it 
  seems 
  to 
  prefer 
  the 
  

   latter 
  ; 
  the 
  second 
  brood 
  seems 
  to 
  be 
  particularly 
  attached 
  

   to 
  white 
  Umbelhferae, 
  though 
  Hke 
  most 
  summer 
  forms 
  

   it 
  is 
  also 
  found 
  on 
  Rubus. 
  In 
  this 
  respect, 
  therefore, 
  its 
  

   habits 
  would 
  seem 
  rather 
  different 
  from 
  those 
  of 
  spinigera. 
  

   As 
  I 
  have 
  elsewhere 
  stated, 
  when 
  it 
  was 
  possible 
  to 
  study 
  

   the 
  three 
  allied 
  species 
  where 
  they 
  occurred 
  in 
  company 
  in 
  

   the 
  spring, 
  no 
  evidence 
  of 
  cross-pairing 
  between 
  them 
  was 
  

   obtained 
  ; 
  nor 
  has 
  any 
  individual 
  been 
  found 
  which 
  would 
  

   suggest 
  that 
  such 
  pairing 
  ever 
  occurs, 
  all 
  the 
  specimens 
  

   being 
  clearly 
  either 
  one 
  or 
  other 
  of 
  the 
  species, 
  without 
  

   intermediates. 
  I 
  have 
  no 
  knowledge 
  whether 
  this 
  bee 
  is 
  

   attacked 
  by 
  N. 
  marshamella 
  like 
  its 
  allies, 
  nor 
  have 
  I 
  fomid 
  

   any 
  stylopised 
  examples, 
  but 
  as 
  they 
  are 
  thus 
  affected 
  in 
  

   N.W. 
  Europe, 
  it 
  is 
  possible 
  that 
  such 
  specimens 
  have 
  

   been 
  taken 
  by 
  others. 
  On 
  the 
  Continent 
  A. 
  rosae 
  appears 
  

   to 
  be 
  a 
  more 
  northern 
  species 
  than 
  spinigera, 
  and 
  one 
  would 
  

   expect 
  it 
  to 
  range 
  into 
  Scotland. 
  The 
  entirely 
  black 
  

   variety 
  of 
  the 
  (^ 
  of 
  the 
  first 
  brood 
  is 
  rare 
  in 
  Devonshire, 
  

   where 
  the 
  species 
  is 
  generally 
  highly 
  coloured, 
  and 
  this 
  

   variety 
  has 
  a 
  remarkable 
  appearance, 
  quite 
  unhke 
  any 
  other 
  

   of 
  its 
  genus. 
  

  

  A. 
  ferox 
  is 
  a 
  species 
  of 
  wide 
  distribution 
  in 
  the 
  south, 
  

   but 
  very 
  local, 
  and 
  seems 
  never 
  to 
  have 
  been 
  obtained 
  

   plentifully 
  since 
  the 
  old 
  Bristol 
  collectors 
  used 
  to 
  find 
  it 
  in 
  

   considerable 
  numbers 
  in 
  that 
  district. 
  Yet, 
  since 
  it 
  occurs 
  

   in 
  Kent, 
  Berkshire, 
  Hampshire 
  and 
  Sussex, 
  and 
  no 
  doubt 
  

   will 
  be 
  rediscovered 
  (although 
  its 
  former 
  Bristol 
  locality 
  

   has 
  been 
  built 
  over) 
  somewhere 
  near 
  its 
  old 
  western 
  haunt, 
  

   and 
  has 
  been 
  also 
  found 
  in 
  Cornwall, 
  it 
  will 
  probably 
  turn 
  

   up 
  commonly 
  enough 
  in 
  some 
  of 
  these 
  counties, 
  or 
  be 
  

  

  