﻿A 
  NEW 
  BRITISH 
  LOCALITY 
  FOR 
  HELIX 
  (EUPARYPHA) 
  PISANA,' 
  

  

  MULL. 
  

  

  By 
  the 
  Eev. 
  A. 
  H. 
  Cooke, 
  Sc.D., 
  F.Z.S. 
  

  

  Read 
  10th 
  December, 
  1915. 
  

  

  During 
  a 
  visit 
  to 
  Portlicawl 
  (Glamorgan) 
  in 
  August 
  of 
  the 
  present 
  

   year, 
  I 
  was 
  struck 
  by 
  tlie 
  occurrence 
  of 
  Helix 
  pisana, 
  Miill., 
  on 
  the 
  

   sand-hills 
  to 
  the 
  east 
  of 
  the 
  town. 
  Specimens 
  were 
  present 
  in 
  hundreds, 
  

   clinging, 
  as 
  usual, 
  in 
  masses 
  to 
  the 
  stalks 
  of 
  the 
  herbage. 
  

  

  It 
  seems 
  obvious 
  that 
  the 
  s|>ecies 
  must 
  have 
  been 
  introduced 
  by 
  the 
  

   agency 
  of 
  man, 
  and 
  probably 
  within 
  the 
  last 
  few 
  years. 
  Although 
  

   the 
  'burrows' 
  at 
  Porthcawl 
  extend 
  for 
  a 
  distance 
  of 
  perhaps 
  two 
  

   miles 
  along 
  the 
  coast, 
  and 
  offer 
  what 
  seems 
  a 
  suitable 
  habitat 
  through- 
  

   out, 
  the 
  species 
  only 
  occurs 
  at 
  present, 
  so 
  far 
  as 
  1 
  was 
  able 
  to 
  ascertain, 
  

   for 
  the 
  few 
  hundred 
  yards 
  immediately 
  adjacent 
  to 
  the 
  town, 
  just 
  

   where 
  the 
  bathing 
  tents 
  are 
  pitched. 
  It 
  seems 
  clear 
  that 
  the 
  

   introducer 
  put 
  his 
  specimens 
  down 
  on 
  the 
  first 
  suitable 
  ground 
  he 
  

   came 
  to, 
  where 
  they 
  at 
  once 
  increased 
  and 
  multiplied, 
  but 
  they 
  have 
  

   not 
  yet 
  had 
  time 
  to 
  extend 
  their 
  area 
  of 
  occupation 
  over 
  more 
  than 
  

   a 
  small 
  section 
  of 
  the 
  sand 
  hills. 
  It 
  is 
  quite 
  probable 
  that 
  the 
  species 
  

   was 
  introduced 
  from 
  Tenby, 
  which 
  is 
  hardly 
  more 
  than 
  four 
  hours 
  

   journey 
  from 
  Porthcawl 
  by 
  train. 
  

  

  Not 
  all 
  attempts 
  to 
  colonize 
  Helix 
  pisana 
  in 
  Glamorgan 
  have 
  been 
  

   so 
  successful. 
  Jeffreys 
  made 
  two 
  attempts, 
  at 
  an 
  interval 
  of 
  years, 
  

   to 
  colonize 
  it 
  on 
  the 
  sand-hills 
  near 
  Swansea, 
  but 
  the 
  experiment 
  

   failed,' 
  According 
  to 
  J. 
  W. 
  Taylor,- 
  "Mr. 
  H. 
  Rowland 
  Wakefield 
  

   now 
  entirely 
  omits 
  it 
  from 
  his 
  list 
  of 
  Swansea 
  shells, 
  as 
  he 
  has 
  

   regularly 
  and 
  persistently 
  searched 
  the 
  district 
  for 
  some 
  years 
  past, 
  in 
  

   conjunction 
  with 
  the 
  local 
  Field 
  Club, 
  witliout 
  finding 
  a 
  trace 
  of 
  

   a 
  single 
  shell, 
  though 
  recently 
  he 
  has 
  picked 
  up 
  a 
  few 
  dead 
  specimens 
  

   at 
  Singleton." 
  

  

  Perliaps 
  one 
  of 
  these 
  local 
  Field 
  Clubs 
  may 
  be 
  able 
  to 
  furnish 
  some 
  

   definite 
  information 
  as 
  to 
  when 
  and 
  how 
  the 
  Porthcawl 
  colony 
  was 
  

   started, 
  which 
  seems 
  to 
  have 
  a 
  more 
  bi'illiant 
  future 
  before 
  it 
  than 
  

   that 
  at 
  Swansea. 
  

  

  Brit. 
  Conch., 
  i, 
  1862, 
  p. 
  208. 
  

  

  Monograph 
  of 
  the 
  Land 
  and 
  Freshwater 
  MoUusca 
  of 
  the 
  British 
  Isles, 
  i, 
  1912, 
  

   p. 
  394. 
  

  

  