﻿158 
  PEOCEEDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIETY. 
  

  

  Soc, 
  1856, 
  p. 
  39, 
  pi. 
  xviii, 
  fig. 
  2 
  ", 
  it 
  is 
  to 
  be 
  observed 
  that 
  it 
  bears 
  

   an 
  old 
  aud 
  very 
  much 
  faded 
  label 
  stating 
  that 
  it 
  came 
  "From 
  the 
  

   edge 
  of 
  the 
  Chalk 
  [?strata] 
  Sutton 
  Veny 
  . 
  . 
  ." 
  Now 
  Sutton 
  Veny 
  

   or 
  Veney 
  is 
  in 
  Wiltshire, 
  about 
  tliree 
  miles 
  south-east 
  of 
  Warminster, 
  

   Avhilst 
  Sharpe 
  states 
  that 
  the 
  original 
  came 
  "from 
  the 
  Grey 
  Chalk 
  

   near 
  Lewes 
  ". 
  Further, 
  the 
  fossil 
  is 
  not 
  only 
  larger 
  than 
  Sharpe's 
  

   figure, 
  its 
  greatest 
  diameter 
  being 
  78*5 
  mm., 
  but 
  compared 
  with 
  that 
  

   figure 
  the 
  specimen 
  is 
  somewhat 
  distorted 
  aud 
  less 
  inflated, 
  the 
  cross- 
  

   section 
  of 
  the 
  whorls 
  is 
  less 
  quadrate 
  and 
  relatively 
  nairower, 
  and 
  on 
  

   each 
  side 
  tlie 
  limits 
  of 
  the 
  umbilicus 
  are 
  obscured 
  by 
  matrix 
  ; 
  "whilst 
  

   the 
  tubercle 
  on 
  each 
  margin 
  of 
  the 
  peripheral 
  area 
  is 
  moi'e 
  obscure. 
  

   It 
  seems, 
  therefore, 
  very 
  doubtful 
  if 
  this 
  is 
  actually 
  the 
  example 
  

   figured 
  by 
  Sharpe. 
  More 
  especially 
  so, 
  since 
  there 
  is 
  in 
  the 
  British 
  

   Museum 
  collection 
  [register 
  number 
  C. 
  5027] 
  a 
  fossil 
  from 
  the 
  Chalk- 
  

   marl 
  of 
  Lewes 
  in 
  Sussex, 
  that 
  has 
  been 
  labelled 
  as 
  the 
  original 
  of 
  

   Sharpe's 
  fig. 
  2, 
  and 
  that 
  agrees 
  in 
  form 
  and 
  dimensions 
  with 
  

   Sharpe's 
  figure. 
  It 
  is 
  marked 
  in 
  ink 
  (in 
  what 
  is 
  believed 
  to 
  be 
  

   D. 
  Sharpe's 
  handwriting, 
  and 
  in 
  the 
  same 
  manner 
  as 
  seveial 
  other 
  

   figured 
  specimens), 
  "Fig. 
  2, 
  PI. 
  18." 
  The 
  fossil 
  shows 
  the 
  

   dimensions 
  of 
  the 
  umbilicus 
  on 
  each 
  side, 
  but 
  the 
  imperfection 
  of 
  

   the 
  earliest 
  part 
  of 
  the 
  outer 
  whorl 
  is 
  not 
  indicated 
  in 
  Sharpe's 
  

   fi"-ure. 
  Still, 
  the 
  specimen 
  agrees 
  so 
  well 
  with 
  the 
  figure 
  on 
  the 
  

   whole 
  that 
  there 
  appears 
  to 
  be 
  every 
  reason 
  for 
  regarding 
  it 
  as 
  the 
  

   fi«-ured 
  example, 
  rather 
  than 
  the 
  fossil 
  in 
  the 
  Brighton 
  Museum. 
  

   It 
  has 
  the 
  following 
  dimensions: 
  — 
  Diameter 
  of 
  shell, 
  59mm. 
  (1); 
  

   lieight 
  of 
  outer 
  whorl, 
  25*5 
  mm. 
  (0'46) 
  ; 
  thickness 
  of 
  outer 
  whorl, 
  

   35 
  mm. 
  (0'59) 
  ; 
  width 
  of 
  umbilicus, 
  16 
  mm. 
  (0'27) 
  ; 
  and 
  width 
  of 
  

   periphery 
  between 
  marginal 
  tubercles, 
  15 
  mm. 
  (0'25). 
  It 
  agrees 
  

   very 
  well 
  with 
  the 
  earlier 
  whorls 
  of 
  the 
  original 
  of 
  Sharpe's 
  fig. 
  1, 
  

   but 
  is, 
  if 
  anything, 
  a 
  little 
  more 
  inflated. 
  It 
  shows, 
  liowever, 
  the 
  

   same 
  slight 
  curvature 
  of 
  the 
  ribs 
  on 
  the 
  lateral 
  area. 
  The 
  principal 
  

   ribs 
  commence 
  at 
  the 
  suture 
  of 
  the 
  shell 
  ; 
  each 
  bears 
  a 
  tubercle 
  at 
  

   the 
  umbilical 
  margin, 
  and 
  a 
  second 
  at 
  a 
  short 
  distance 
  therefrom 
  on 
  

   the 
  lateral 
  area 
  ; 
  each 
  is 
  ornamented 
  witli 
  a 
  small 
  tubercle 
  at 
  eacli 
  

   margin 
  of 
  the 
  periphery, 
  and 
  at 
  about 
  half-way 
  between 
  the 
  row 
  

   of 
  tiibercles 
  at 
  the 
  margin 
  of 
  the 
  peripheiy 
  and 
  the 
  second 
  (counting 
  

   from 
  the 
  umbilicus) 
  tubercle 
  on 
  the 
  lateral 
  area 
  each 
  rib 
  is 
  raised 
  

   into 
  a 
  feeble 
  angular 
  prominence. 
  The 
  tubercles 
  at 
  the 
  margin 
  of 
  

   the 
  periphery 
  are 
  quite 
  distinct 
  at 
  the 
  anterior 
  end 
  of 
  the 
  specimen. 
  

   The 
  suture-iine 
  is 
  not 
  shown. 
  Although 
  a 
  little 
  more 
  inflated 
  than 
  

   the 
  original 
  of 
  Sharpe's 
  fig. 
  1, 
  this 
  example 
  seems 
  to 
  be 
  specifically 
  

   identical 
  therewith. 
  

  

  The 
  specimen 
  depicted 
  in 
  Sharpe's 
  fig. 
  3' 
  is 
  a 
  more 
  compressed 
  

   shell 
  than 
  the 
  original 
  of 
  his 
  fig. 
  1. 
  It 
  now 
  forms 
  part 
  of 
  the 
  

   British 
  Museum 
  collection 
  [register 
  number 
  50287]; 
  it 
  has 
  the 
  

   following 
  dimensions, 
  fully 
  one-third 
  of 
  the 
  outer 
  whorl 
  being 
  

  

  The 
  compression 
  of 
  the 
  shell 
  is 
  represented 
  in 
  fig. 
  .Sa, 
  but 
  is 
  not 
  so 
  well 
  

   indicated 
  in 
  fig. 
  36. 
  

  

  