﻿264 
  Mr. 
  R. 
  C. 
  L. 
  Perkins 
  on 
  

  

  nificornis, 
  and 
  Smith's 
  earliest 
  description 
  oi 
  flavoguttata 
  $ 
  

   was 
  also 
  made 
  from 
  guthdata. 
  

  

  A. 
  humilis 
  is 
  a 
  very 
  local 
  species, 
  widely 
  distributed, 
  

   but 
  probably 
  absent 
  from 
  a 
  good 
  many 
  counties, 
  and 
  in 
  

   some 
  so 
  extremely 
  local 
  that 
  one 
  may 
  expect 
  that 
  it 
  is 
  

   to 
  be 
  found 
  in 
  a 
  number 
  of 
  others 
  from 
  which 
  it 
  has 
  not 
  

   yet 
  been 
  recorded. 
  Its 
  wide 
  distribution 
  is 
  shown 
  by 
  its 
  

   abundance 
  here 
  and 
  there 
  in 
  Surrey, 
  Kent, 
  Hants, 
  Devon 
  

   and 
  Cornwall, 
  Gloucestershire, 
  Oxford 
  and 
  Lancashire. 
  

   It 
  is 
  particularly 
  attached 
  to 
  Hieracium, 
  but 
  visits 
  also 
  

   other 
  plants, 
  e.g., 
  daisies, 
  buttercups 
  and 
  dandehons. 
  

   Often 
  it 
  forms 
  enormous 
  colonies 
  in 
  hard-trodden 
  path- 
  

   ways. 
  Its 
  special 
  parasite 
  Nomada 
  ferruginata 
  is 
  often 
  

   found 
  at 
  these 
  colonies, 
  and 
  is 
  also 
  of 
  very 
  wide 
  distri- 
  

   bution, 
  but 
  not 
  always 
  present, 
  even 
  where 
  the 
  host 
  is 
  

   abundant. 
  On 
  the 
  Continent 
  this 
  bee 
  is 
  much 
  stylopised 
  

   in 
  some 
  localities, 
  but 
  I 
  have 
  seen 
  no 
  British 
  specimens 
  

   affected. 
  

  

  A. 
  lahialis 
  is 
  found 
  in 
  many 
  localities 
  in 
  the 
  south; 
  

   from 
  the 
  eastern 
  counties 
  to 
  Gloucestershire 
  and 
  Cornwall 
  

   in 
  the 
  west, 
  and 
  in 
  Cheshire 
  and 
  Lancashire 
  in 
  the 
  north. 
  

   Its 
  abundance 
  in 
  some 
  places 
  seems 
  to 
  depend 
  on 
  the 
  fact 
  

   that 
  it 
  forms 
  large 
  and 
  compact 
  colonies, 
  often 
  in 
  some 
  

   vertical 
  cutting 
  or 
  bare 
  exposed 
  surface 
  of 
  a 
  hedge 
  bank, 
  

   and 
  where 
  these 
  colonies 
  are 
  found 
  it 
  is 
  naturally 
  very 
  

   abundant. 
  V. 
  R. 
  Perkins 
  records 
  several 
  such 
  colonies 
  

   at 
  Wotton-under-Edge 
  in 
  Gloucestershire 
  in 
  1879, 
  and 
  

   states 
  that 
  the 
  species 
  subsequently 
  entirely 
  disappeared. 
  

   In 
  that 
  neighbourhood 
  I 
  found 
  this 
  bee 
  at 
  various 
  times 
  

   from 
  1886 
  to 
  1907, 
  but 
  always 
  singly, 
  and 
  also 
  its 
  burrows, 
  

   but 
  these 
  too 
  were 
  isolated 
  ones 
  on 
  grass-covered 
  slopes. 
  

   It 
  certainly 
  has 
  a 
  way 
  of 
  appearing 
  and 
  disappearing 
  

   suddenly, 
  as 
  I 
  have 
  noticed 
  in 
  other 
  locahties. 
  I 
  have 
  

   taken 
  the 
  $ 
  on 
  Trifolnim, 
  Lotus, 
  Veronica 
  and 
  Hieracium, 
  

   and 
  in 
  gardens 
  on 
  sage 
  and 
  seringa, 
  and, 
  no 
  doubt, 
  it 
  

   visits 
  numerous 
  plants. 
  Hallett 
  takes 
  it 
  on 
  Salix 
  and 
  

   Cornus 
  sanguinea. 
  Compact 
  colonies 
  sometimes 
  become 
  

   badly 
  infested 
  with 
  StyJcps, 
  but 
  no 
  Nomada 
  attacks 
  it 
  

   in 
  this 
  country. 
  On 
  the 
  Continent 
  a 
  form 
  of 
  N. 
  cinna- 
  

   barina 
  is 
  said 
  to 
  be 
  found 
  with 
  it. 
  There 
  seems 
  to 
  be 
  

   little 
  doubt 
  that 
  Sphecodes 
  rubicundus 
  is 
  its 
  special 
  parasite, 
  

   this 
  having 
  been 
  found 
  in 
  connection 
  with 
  it, 
  in 
  such 
  

   different 
  localities 
  as 
  Suffolk, 
  the 
  New 
  Forest, 
  and 
  the 
  

   fens 
  of 
  Cambridge. 
  

  

  