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  V 
  R 
  C 
  E 
  E 
  D 
  I 
  ]Sr 
  G 
  S 
  

  

  MALACOLOGICAL 
  SOCIKTY 
  

  

  OF 
  LONDON. 
  

  

  EDITRl) 
  BV 
  

  

  B. 
  B. 
  WOODWAllD, 
  F.L.S., 
  etc 
  I3S^^ii9D 
  Of 
  Mc^lUSkfi 
  

  

  Under 
  the 
  direcl'wn 
  of 
  the 
  Fahliciition 
  Committe^^^^^*^^^^^ 
  . 
  1 
  

  

  VOLUME 
  XII. 
  

  

  1916—1917. 
  

  

  A.UTHOUS 
  ALONE 
  ARE 
  UESl'ONHIHI.E 
  FOR 
  THE 
  STATEMENTS 
  IN 
  THEIR 
  RESPECTIVE 
  

  

  PAPERS. 
  

  

  LONDON 
  : 
  

  

  DULAU 
  & 
  CO., 
  Ltd., 
  

  

  37 
  SoHO 
  SauARE, 
  W. 
  

  

  1917. 
  

  

  ('"^6 
  9 
  ozs 
  ' 
  ) 
  

  

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  ' 
  » 
  - 
  

  

  /■,• 
  

  

  