﻿80 
  

  

  NOTES 
  OX 
  A 
  COLLECTION 
  OF 
  HELICOID 
  LAND 
  SHELLS 
  FKOM 
  

  

  NEW 
  GUINEA. 
  

  

  By 
  G. 
  K. 
  GuDE, 
  F.Z.S. 
  

  

  Bead 
  lAth 
  January, 
  1910. 
  

  

  Since 
  collecting 
  Mollusca 
  and 
  other 
  Natural 
  History 
  objects 
  in 
  

   New 
  Guinea 
  in 
  1902 
  and 
  1903, 
  Mr. 
  A. 
  E. 
  Pratt 
  has 
  made 
  two 
  further 
  

   expeditions 
  to 
  this, 
  the 
  largest 
  island 
  in 
  the 
  world. 
  The 
  first 
  of 
  these 
  

   started 
  from 
  the 
  south 
  coast 
  with 
  the 
  object 
  of 
  penetrating 
  into 
  the 
  

   interior 
  of 
  Dutch 
  New 
  Guinea, 
  and 
  unfortunately 
  proved 
  a 
  complete 
  

   failure 
  through 
  his 
  inability 
  to 
  procure 
  native 
  porters. 
  On 
  his 
  

   latest 
  expedition 
  to 
  North 
  and 
  West 
  New 
  Guinea 
  Mr. 
  Pratt 
  obtained 
  

   extensive 
  collections, 
  and 
  the 
  Mollusca 
  were, 
  with 
  one 
  or 
  two 
  

   exceptions, 
  in 
  excellent 
  condition. 
  Some 
  species 
  were 
  represented 
  

   by 
  considerable 
  numbers, 
  and 
  those 
  enumerated 
  below 
  were 
  collected 
  

   at 
  Hamatawarea, 
  near 
  Fak-Fak, 
  West 
  New 
  Guinea. 
  With 
  one 
  

   exception 
  they 
  all 
  belong 
  to 
  known 
  forms, 
  no 
  less 
  than 
  seven 
  of 
  the 
  

   species 
  pertaining 
  to 
  the 
  genus 
  Papuina, 
  one 
  of 
  these 
  being 
  new 
  to 
  

   science. 
  

  

  Xesta 
  cjteijsta, 
  Linn., 
  var. 
  Obiaka, 
  MUdff. 
  

  

  Xesta 
  Ohiana, 
  Mlldff., 
  Nachr. 
  Blatt. 
  Deutsch. 
  Maluk. 
  Ges., 
  1902, 
  p. 
  186. 
  

  

  Originally 
  described 
  as 
  a 
  distinct 
  species, 
  allied 
  to 
  X. 
  aulica, 
  by 
  

   Mollendorff, 
  but 
  it 
  appears 
  to 
  me 
  to 
  be 
  simply 
  a 
  depressed 
  small 
  form 
  

   of 
  X. 
  citrina. 
  Hitherto 
  only 
  recorded 
  from 
  the 
  island 
  Obi 
  in 
  the 
  

   Moluccas. 
  

  

  Hemiplecta 
  Andaiejstsis, 
  Smith. 
  

  

  Ariophanta 
  {Hemiplecta) 
  Andaiensis, 
  Smith, 
  Proc. 
  Malac. 
  Soc, 
  1897, 
  

   vol. 
  ii, 
  p. 
  287, 
  pi. 
  xvii, 
  figs. 
  7, 
  8. 
  

  

  One 
  specimen 
  is 
  larger 
  than 
  the 
  type, 
  measuring 
  diam. 
  maj. 
  

   35, 
  min. 
  30 
  mm.; 
  alt. 
  14'5 
  mm. 
  Another 
  specimen 
  is 
  still 
  more 
  

   depressed 
  than 
  the 
  one 
  figured 
  by 
  Mr. 
  Smith 
  in 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  

   1897, 
  ser. 
  vi, 
  vol. 
  xx, 
  pi. 
  ix, 
  fig. 
  4, 
  its 
  dimensions 
  being: 
  diam. 
  

   maj. 
  32-5, 
  min. 
  28-5 
  mm. 
  ; 
  alt. 
  12 
  mm. 
  

  

  Hemiplecta 
  Dohi^ 
  (Tapp.-Can,). 
  

  

  JVanina 
  Dorice, 
  Tapp.-Can., 
  Ann. 
  Mus. 
  Civ. 
  Genova, 
  1880, 
  vol. 
  xvi, 
  

  

  p. 
  61 
  ; 
  1883, 
  vol. 
  xix, 
  p. 
  202, 
  pi. 
  v, 
  figs. 
  8-10. 
  

   Nanina 
  (Hemiplecta) 
  Dortce, 
  Kohelt, 
  Conch. 
  Cab., 
  Helix, 
  1902, 
  Abth. 
  v, 
  

  

  p. 
  1001, 
  pi. 
  cclix, 
  figs. 
  7-9. 
  

  

  The 
  specimens 
  obtained 
  are 
  larger 
  and 
  more 
  elevated 
  than 
  the 
  type. 
  

   Diam. 
  maj. 
  46, 
  min. 
  38 
  mm.; 
  alt. 
  22 
  mm. 
  

  

  Hemiplecta 
  Caiensi, 
  Smith. 
  

   A 
  single 
  immature 
  shell. 
  

  

  