﻿78 
  PROCEKDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIETY. 
  

  

  penultimate 
  whorl, 
  the 
  last 
  two 
  whorls 
  have 
  a 
  whitish 
  thread-like 
  

   line 
  at 
  the 
  suture, 
  upper 
  part 
  of 
  shell 
  finely 
  obliquely 
  striated, 
  on 
  

   the 
  lower 
  two 
  whorls 
  tlie 
  strice 
  gradually 
  become 
  stronger 
  until 
  the 
  

   last 
  half-whorl 
  has 
  the 
  appearance 
  of 
  being 
  broadly 
  but 
  obtusely 
  

   costate, 
  the 
  whole 
  surface 
  of 
  the 
  lower 
  Avhorls 
  is 
  covered 
  with 
  a 
  

   microscopic 
  granulation 
  ; 
  whorls 
  5^, 
  slightly 
  convex, 
  the 
  last 
  rounded 
  

   but 
  showing 
  some 
  indications 
  of 
  a 
  keel; 
  aperture 
  transversely 
  oval, 
  

   whitish 
  within, 
  the 
  outer 
  band 
  showing 
  tlirough 
  ; 
  peristome 
  white, 
  

   very 
  oblique, 
  broadly 
  expanded 
  and 
  somewhat 
  reflexed, 
  margins 
  

   joined 
  by 
  a 
  tliin 
  transparent 
  callus. 
  

  

  Maj. 
  diiim. 
  36, 
  alt. 
  22 
  mm. 
  

  

  ffab.— 
  Wink 
  I. 
  

  

  Allied 
  to 
  the 
  Papiiina 
  lahium-lituiis-77iuUi%ona-ivallaceana-aurora 
  

   group 
  (all 
  of 
  which 
  may 
  prove 
  to 
  be 
  but 
  varying 
  forms 
  of 
  one 
  species), 
  

   but 
  our 
  new 
  species 
  can 
  be 
  easily 
  distinguished 
  from 
  all 
  by 
  its 
  open 
  

   umbilicus 
  and 
  the 
  course 
  oblique 
  sculpture 
  of 
  the 
  last 
  whorl. 
  The 
  

   specimen 
  selected 
  for 
  the 
  type 
  is 
  of 
  a 
  light 
  yellowish-brown 
  with 
  a 
  

   rather 
  broad 
  dark-brown 
  band 
  at 
  the 
  periphery 
  of 
  the 
  last 
  whorl 
  ; 
  but 
  

   there 
  are 
  also 
  specimens 
  of 
  a 
  uniform 
  dai'k 
  brown 
  without 
  any 
  band, 
  

   and 
  other 
  examples 
  have 
  the 
  last 
  whorl 
  dark 
  brown, 
  whilst 
  the 
  upper 
  

   whorls 
  exliibit 
  a 
  lighter-brown 
  coloration. 
  All 
  have 
  the 
  characteristic 
  

   open 
  umbilicus 
  and 
  coarse 
  sculpture. 
  

  

  9. 
  PaPUINA 
  LEPIDA, 
  u.sp. 
  PI. 
  Ill, 
  Figs. 
  9-11. 
  

  

  Shell 
  depressed 
  trochiform, 
  rather 
  thin 
  and 
  transparent, 
  openly 
  

   umbilicated 
  to 
  width 
  of 
  about 
  3 
  mm., 
  of 
  a 
  very 
  light 
  yellowish-brown 
  

   colour 
  ; 
  whorls 
  5, 
  distinctly 
  convex, 
  with 
  very 
  fine 
  oblique 
  strife 
  or 
  

   lines 
  of 
  growth, 
  lower 
  whorls 
  covered 
  witli 
  microscopic 
  waved 
  

   granules, 
  last 
  half-whorl 
  is 
  bluatly 
  whilst 
  the 
  first 
  half 
  is 
  sharply 
  

   carinate, 
  there 
  is 
  a 
  spiral 
  white 
  thread 
  at 
  the 
  suture 
  of 
  the 
  

   penultimate 
  wliicli 
  is 
  continued 
  half-way 
  round 
  last 
  whorl, 
  where 
  it 
  

   is 
  covered 
  by 
  a 
  narrow 
  reddish-brown 
  band 
  which 
  extends 
  to 
  the 
  

   peristome; 
  aperture 
  transversely 
  oval, 
  whitish 
  within; 
  peristome 
  

   expanded 
  and 
  slighth" 
  reflexed, 
  flesh-coloured. 
  

  

  Maj. 
  diam. 
  29, 
  alt.' 
  17 
  mm. 
  

  

  Rah.—Wv.xk 
  I. 
  

  

  Approaching 
  but 
  quite 
  distinct 
  from 
  P. 
  pseudolanceolata, 
  Dtz., 
  and 
  

   P. 
  callosa, 
  Sykes, 
  from 
  both 
  of 
  which 
  it 
  is 
  easily 
  distinguished 
  by 
  its 
  

   open 
  umbilicus 
  and 
  much 
  less 
  angular 
  peristome. 
  

  

  EXPLANATION 
  OF 
  FIGUEES 
  ON 
  PLATE 
  IIL 
  

   Figs. 
  

   9-11. 
  Papiiina 
  lepida, 
  n.sp. 
  

   12-14. 
  P. 
  subcostata, 
  n.sp. 
  

  

  