﻿160 
  PROCERDINGS 
  OF 
  TSK 
  MALACOLOGICAL 
  SOCIETY. 
  

  

  a 
  few 
  of 
  the 
  larger 
  ribs 
  more 
  promiuent 
  than 
  the 
  rest 
  and 
  provided 
  

   with 
  relatively 
  larger 
  tubercles 
  at 
  the 
  middle 
  of 
  the 
  lateral 
  area. 
  

  

  This 
  specimen 
  is 
  also 
  from 
  the 
  Lower 
  Chalk 
  of 
  Chardslock, 
  

   Somerset, 
  and 
  formerly 
  belonged 
  to 
  the 
  collection 
  of 
  Professor 
  Jolm 
  

   Morris. 
  To 
  it 
  is 
  attached 
  a 
  small 
  white 
  label 
  marked 
  in 
  ink 
  (in 
  

   apparently 
  the 
  handwriting 
  of 
  Daniel 
  Sharpe), 
  "PI. 
  18, 
  Fig. 
  5." 
  

   Although 
  reversed 
  and 
  a 
  little 
  restored, 
  Sharpe's 
  figure 
  has 
  un- 
  

   doubtedly 
  been 
  taken 
  from 
  this 
  fossil. 
  

  

  Whether 
  Sharpe's 
  specimens 
  are 
  correctly 
  referred 
  to 
  Mantell's 
  

   species, 
  and 
  also 
  whether 
  they 
  are 
  belong 
  to 
  one 
  and 
  the 
  same 
  species, 
  

   there 
  is 
  some 
  reason 
  to 
  doubt. 
  Probably 
  the 
  originals 
  of 
  liis 
  figs. 
  1 
  

   and 
  2 
  are 
  specifically 
  identical, 
  whilst 
  the 
  original 
  of 
  his 
  fig. 
  5 
  may 
  

   be 
  the 
  inner 
  whorls 
  of 
  a 
  somewhat 
  more 
  spin)' 
  and 
  ratlier 
  more 
  

   coarsely-ornamented 
  example 
  of 
  the 
  form 
  represented 
  in 
  his 
  fig. 
  3. 
  

  

  ON 
  A 
  SANDSTONE 
  CAST 
  OF 
  ATURIA 
  ATUBI 
  (BASTEEOT), 
  FROM 
  

   THE 
  MIOCENE 
  OF 
  WESTERN 
  AUSTRALIA. 
  

  

  By 
  11. 
  EuLLKN 
  Newton, 
  F.G.S. 
  

  

  Read 
  13th 
  June, 
  1919. 
  

  

  (Published 
  by 
  permission 
  of 
  the 
  Trustees 
  of 
  the 
  British 
  Museum.) 
  

  

  PLATES 
  V 
  AND 
  VI. 
  

  

  On 
  account 
  of 
  its 
  wide 
  geographical 
  distribution 
  and 
  its 
  restriction 
  to 
  

   Miocene 
  seas, 
  Aturia 
  aturi 
  ranks 
  as 
  one 
  of 
  the 
  most 
  interesting 
  

   Cephalopods 
  of 
  Tertiary 
  times. 
  

  

  The 
  specimen 
  forming 
  the 
  subject 
  of 
  this 
  notice 
  was 
  collected 
  

   some 
  years 
  ago 
  by 
  Mr. 
  Harry 
  W. 
  Field 
  in 
  the 
  vicinity 
  of 
  Albany, 
  

   Western 
  Australia, 
  during 
  a 
  prospecting 
  survey 
  for 
  coal. 
  It 
  was 
  

   found 
  as 
  a 
  natural 
  cast 
  in 
  a 
  sandstone 
  deposit, 
  accompunied 
  by 
  some 
  

   otlier 
  fossils, 
  similarly 
  preserved 
  and 
  determinable, 
  as 
  RostcUario, 
  

   Glycynieris 
  cf. 
  laticostatus 
  (Quoy 
  & 
  Gaimard), 
  and 
  a 
  Pecten, 
  besides 
  

   Echinoid 
  remains 
  wliich 
  Dr. 
  F. 
  A. 
  Bather 
  recognizes 
  as 
  belonging 
  to 
  

   either 
  Linthia 
  or 
  Schizaster. 
  

  

  Atuuia 
  atuki 
  (Basterot).' 
  

  

  Nauiilite 
  de 
  Dax, 
  Montfort, 
  "Suite 
  a 
  BufPon 
  " 
  (Hist. 
  Mat. 
  Moll., 
  

  

  An. 
  x), 
  vol. 
  iv, 
  1802, 
  p. 
  240, 
  pi. 
  xlvi, 
  fig. 
  1. 
  

   Nautilus 
  aturi, 
  Basterot, 
  Mem. 
  Soc. 
  Hist. 
  Nat. 
  Paris, 
  vol. 
  ii, 
  pt. 
  i, 
  

  

  1825, 
  p. 
  17; 
  Bronn, 
  Lethaea 
  Geognostica, 
  vol. 
  ii, 
  1838, 
  

  

  pp. 
  1122-3, 
  pi. 
  xlii, 
  fig. 
  17. 
  

   — 
  zigzag, 
  Forbes, 
  Proc. 
  Geol. 
  Soc. 
  London, 
  vol. 
  iv, 
  1844, 
  pp. 
  230-1. 
  

   Aturia 
  aturi, 
  Bronn, 
  Lethsea 
  Geognostica, 
  vol. 
  iii, 
  1856, 
  p. 
  595. 
  

  

  ' 
  For 
  a 
  fuller 
  synonymy 
  of 
  this 
  species 
  previous 
  to 
  1890 
  see 
  Dr. 
  A.' 
  H. 
  Foord's 
  

   Catalogue 
  of 
  the 
  Fossil 
  Cephalopoda 
  in 
  the 
  British 
  Museum 
  {Natural 
  

   History), 
  pt. 
  ii, 
  pp. 
  351, 
  352, 
  1891, 
  deahng 
  with 
  European 
  forms. 
  

  

  