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  DESCRIPTION 
  OF 
  VIVIPARA 
  FRAGILIS, 
  N.SP., 
  FROM 
  

   DUTCH 
  NEW 
  GUINEA. 
  

  

  By 
  H. 
  B. 
  Preston, 
  T.Z.S. 
  

  

  Read 
  Wth 
  Fehruanj, 
  1910. 
  

  

  ViVIPAKA 
  FRAGILIS, 
  n.Sp. 
  

  

  Shell 
  fusiformly 
  turbinate, 
  obtuse, 
  much, 
  eroded, 
  reddish 
  chestnut; 
  

   whorls 
  5, 
  convex, 
  shouldered 
  above, 
  bearing 
  three 
  spiral 
  carinse, 
  marked 
  

   with 
  transverse 
  lines 
  of 
  growth, 
  and 
  sculptured 
  with 
  numerous 
  

   raised, 
  wavy, 
  spiral 
  strise, 
  which 
  become 
  more 
  numerous 
  towards 
  

   the 
  base 
  ; 
  sutures 
  deeply 
  impressed 
  ; 
  umbilicus 
  narrow 
  ; 
  columella 
  

  

  rather 
  obliquely 
  curved 
  ; 
  peristome 
  slightly 
  thickened 
  below, 
  erect 
  

   above, 
  continuous, 
  blackish 
  ; 
  aperture 
  subcircular 
  ; 
  operculum 
  horny 
  

   with 
  sub-lateral 
  nucleus. 
  Alt. 
  40, 
  diam. 
  maj. 
  30 
  mm. 
  ; 
  aperture, 
  

   alt. 
  19, 
  diam. 
  16 
  mm. 
  

  

  Hal. 
  — 
  Manswon 
  Bien 
  Lake, 
  Central 
  Arfak 
  Mountains, 
  Dutch 
  New 
  

   Gruinea, 
  at 
  an 
  altitude 
  of 
  8000 
  feet. 
  

  

  