﻿6 
  PEOCEEDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIETY. 
  

  

  From 
  Mr. 
  Stellfox, 
  through 
  Mr. 
  Kennard, 
  specimens 
  of 
  great 
  interest 
  

   have 
  been 
  received 
  from 
  Lough 
  Aguse, 
  co. 
  Fermanagh, 
  Ireland 
  (alt. 
  

   450 
  feet). 
  After 
  very 
  careful 
  comparison 
  it 
  would 
  seem 
  that 
  these 
  are 
  

   British 
  representatives 
  of 
  the 
  Swedish 
  species 
  P. 
  Lilljeborgii, 
  Clessin, 
  

   a 
  form 
  closely 
  allied 
  to, 
  but 
  apparently 
  distinct 
  from, 
  both 
  P. 
  obtusale 
  

   and 
  P. 
  Steenbuchii. 
  There 
  are 
  at 
  present, 
  it 
  is 
  true, 
  only 
  four 
  specimens 
  ; 
  

   still, 
  though 
  more 
  globose 
  than 
  my 
  Norwegian 
  specimens, 
  there 
  cannot, 
  

   I 
  think, 
  be 
  any 
  doubt 
  as 
  to 
  their 
  identitj^ 
  

  

  Of 
  the 
  fifteen 
  living 
  forms 
  of 
  Pisidium 
  known 
  to 
  me 
  from 
  North- 
  

   Western 
  Europe, 
  fourteen 
  have, 
  therefore, 
  now 
  been 
  met 
  with 
  in 
  these 
  

   islands. 
  One 
  only, 
  the 
  little 
  P. 
  parvulum, 
  Clessin, 
  a 
  Scandinavian 
  

   species, 
  about 
  the 
  size 
  of 
  a 
  big 
  pin's 
  head, 
  has 
  not 
  yet 
  been 
  reported. 
  

   Since, 
  however, 
  like 
  P. 
  supimtm, 
  it 
  has 
  a 
  relatively 
  strong 
  hinge, 
  it 
  

   may 
  be 
  looked 
  for 
  in 
  running 
  waters 
  among 
  sand, 
  in 
  upland 
  streams, 
  

   where 
  it 
  has 
  quite 
  possibly 
  been 
  overlooked. 
  

  

  By 
  way 
  of 
  supplement 
  to 
  the 
  note 
  on 
  the 
  distribution 
  of 
  P. 
  supinum 
  

   in 
  Britain, 
  that 
  was 
  read 
  at 
  the 
  May 
  meeting 
  of 
  this 
  Society 
  (Proc. 
  

   Malac. 
  Soc, 
  vol. 
  viii, 
  p. 
  330), 
  the 
  following 
  further 
  localities 
  for 
  this 
  

   species 
  may 
  now 
  be 
  enumerated. 
  From 
  Budworth 
  Mere, 
  Cheshire, 
  

   Mr. 
  A. 
  S. 
  Kennard 
  has 
  received 
  a 
  single 
  pair 
  of 
  fine 
  valves. 
  During 
  

   the 
  summer 
  Mr. 
  C. 
  Oldham 
  traced 
  the 
  species 
  along 
  the 
  Grand 
  Junction 
  

   Canal, 
  obtaining 
  it 
  from 
  Rickmansworth 
  and 
  Tring 
  in 
  Hertfordshire, 
  

   Marsworth 
  in 
  Bucks, 
  and 
  sparingly 
  at 
  Blisworth 
  in 
  Northamptonshire. 
  

   Mr. 
  J. 
  E. 
  Cooper 
  has 
  found 
  the 
  species 
  sparsely 
  in 
  mud 
  in 
  a 
  stream 
  at 
  

   Iver 
  (Bucks) 
  and 
  at 
  Byfleet 
  (Surrey) 
  ; 
  specimens 
  have 
  just 
  been 
  forwarded 
  

   by 
  Mr. 
  H. 
  C. 
  Napier 
  from 
  rejectamenta 
  of 
  the 
  Cherwell 
  at 
  Mesopotamia, 
  

   Oxford 
  ; 
  whilst 
  Mr. 
  H. 
  Overton 
  has 
  taken 
  it 
  in 
  the 
  Severn 
  at 
  Bewdley. 
  

  

  B. 
  B. 
  Woodward. 
  

  

  J^OTE 
  ON 
  Athoracophorus 
  Schauinslandi. 
  {Read 
  \4:th 
  January, 
  

   1910.)— 
  Quite 
  recently 
  it 
  has 
  been 
  my 
  good 
  fortune 
  to 
  obtain, 
  through 
  the 
  

   kindness 
  of 
  ]\Ir. 
  T. 
  H. 
  Turner, 
  Stephens 
  Island, 
  live 
  specimens 
  of 
  Athoraco- 
  

   phorus 
  Schauinslandi, 
  Plate, 
  and 
  I 
  am 
  now 
  able 
  to 
  supply 
  the 
  following 
  

   additional 
  information. 
  

  

  The 
  living 
  animal 
  has 
  a 
  lanceolate, 
  depressed 
  convex 
  body 
  when 
  at 
  

   rest, 
  and 
  a 
  full-grown 
  specimen 
  showed 
  the 
  following 
  dimensions 
  : 
  length 
  

   37, 
  breadth 
  15, 
  height 
  6 
  mm. 
  When 
  crawling 
  the 
  animal 
  was 
  not 
  much 
  

   higher, 
  but 
  more 
  narrowed, 
  and 
  longitudinally 
  extended, 
  the 
  length 
  being 
  

   55, 
  breadth 
  10 
  mm. 
  Colour 
  yellowish 
  -brown, 
  with 
  the 
  minute 
  granules 
  

   of 
  the 
  notum 
  black 
  ; 
  the 
  large 
  papillae, 
  which 
  usually 
  only 
  appear 
  through 
  

   contraction 
  when 
  preserved 
  in 
  alcohol, 
  are 
  marked 
  by 
  whitish 
  spots 
  

   surrounded 
  by 
  black 
  ; 
  mantle-area 
  yellowish, 
  margined 
  with 
  black 
  ; 
  

   tentacles 
  greyish. 
  The 
  latter 
  are 
  rather 
  short, 
  slightly 
  clavate, 
  with 
  an 
  

   annular 
  swelling 
  at 
  the 
  base, 
  3 
  to 
  4 
  mm. 
  long 
  when 
  fully 
  extended. 
  

   Notum 
  minutely 
  and 
  densely 
  granular 
  all 
  over 
  ; 
  the 
  large 
  papillae 
  are 
  

   sometimes 
  sharply 
  raised, 
  but 
  after 
  a 
  short 
  period 
  their 
  turgidity 
  dis- 
  

   appears, 
  and 
  the 
  whole 
  dorsum 
  is 
  left 
  only 
  minutely 
  granular. 
  The 
  

   grooves 
  are 
  distinct, 
  and 
  the 
  median 
  furrow 
  of 
  the 
  head-shield 
  is 
  always 
  

   distinct. 
  The 
  specimens 
  at 
  the 
  disposal 
  of 
  Professor 
  Plate 
  had 
  no 
  median 
  

   groove 
  on 
  the 
  head-shield, 
  no 
  doubt 
  as 
  a 
  result 
  of 
  the 
  mode 
  of 
  preserva- 
  

   tion. 
  All 
  the 
  living 
  specimens 
  I 
  examined 
  had 
  this 
  median 
  groove 
  very 
  

   distinct. 
  

  

  The 
  eggs 
  are 
  laid 
  in 
  clusters 
  of 
  twenty 
  to 
  thirty 
  ; 
  they 
  are 
  yellowish- 
  

   white, 
  semi-transparent, 
  globular 
  or 
  slightly 
  oval, 
  the 
  surface 
  distinctly 
  

   puckered 
  ; 
  diam. 
  3 
  mm. 
  

  

  H. 
  SUTER. 
  

  

  