﻿52 
  ON 
  THE 
  NAIADES, 
  

  

  Hab. 
  Java? 
  

  

  My 
  Cabinet. 
  

   Diam. 
  -9, 
  Length 
  *6 
  of 
  an 
  inch. 
  

  

  Remarks. 
  — 
  The 
  solidity, 
  smoothness 
  and 
  purple 
  colour 
  of 
  this 
  spe- 
  

   cies, 
  which 
  is 
  supposed 
  to 
  have 
  been 
  of 
  Mr 
  Shillaber's 
  collection, 
  will 
  

   serve 
  to 
  distinguish 
  it. 
  Like 
  the 
  mamilla, 
  herein 
  described, 
  it 
  has 
  a 
  

   thick 
  lip 
  and 
  is 
  impressed 
  at 
  the 
  base 
  of 
  the 
  columella. 
  The 
  two 
  

   specimens 
  which 
  I 
  have 
  differ 
  much 
  in 
  the 
  arrangement 
  of 
  colour. 
  

   In 
  one 
  the 
  inferior 
  portion 
  is 
  almost 
  white, 
  and 
  a 
  dark 
  interrupted 
  band 
  

   encircles 
  the 
  middle 
  of 
  the 
  whorl. 
  

  

  Helix 
  ovum 
  reguli. 
  Plate 
  XIX. 
  fig. 
  61. 
  

  

  Testa 
  super 
  et 
  subtus 
  planulatd, 
  colore 
  columbino 
  tinctd, 
  minutis 
  irregirfaribus 
  

   maculis 
  numerosis, 
  imperforatd 
  ; 
  anfractihus 
  quaiernis; 
  spird 
  valde 
  deprcssd 
  ; 
  

   aperturd 
  subovaid, 
  intus 
  purpurascenti 
  ; 
  labro 
  acuto, 
  subreflexo 
  ; 
  columella 
  laevi, 
  

   ad 
  basin 
  subconcavd. 
  

  

  Shell 
  flattened 
  above 
  and 
  below, 
  dove 
  coloured, 
  with 
  numerous 
  irregular 
  minute 
  dots, 
  

   imperforate; 
  whorls 
  four; 
  spire 
  much 
  flattened; 
  aperture 
  suboval, 
  purplish 
  inside: 
  

   outer 
  lip 
  somewhat 
  reflected 
  but 
  sharp; 
  columella 
  smooth, 
  at 
  base 
  impressed. 
  

  

  Hab. 
  Java? 
  

  

  My 
  Cabinet. 
  

   Diam. 
  -8, 
  Length 
  *4 
  of 
  an 
  inch. 
  

  

  Remarks. 
  — 
  The 
  very 
  peculiar 
  colour 
  and 
  the 
  minute 
  dots 
  of 
  this 
  

   beautiful 
  and 
  interesting 
  species 
  eminently 
  distinguish 
  it 
  from 
  all 
  other 
  

   species 
  which 
  have 
  come 
  under 
  my 
  notice. 
  The 
  line 
  of 
  the 
  superior 
  

   part 
  of 
  the 
  lip 
  is 
  almost 
  parallel 
  with 
  the 
  corresponding 
  inferior 
  part, 
  

   and 
  the 
  outer 
  posterior 
  is 
  consequently 
  more 
  round. 
  In 
  my 
  specimens 
  

   there 
  are 
  two 
  very 
  indistinct 
  bands, 
  rather 
  lighter 
  than 
  the 
  ground. 
  

   In 
  colour 
  it 
  greatly 
  resembles 
  a 
  spotted 
  small 
  egg 
  of 
  a 
  bird. 
  It 
  is 
  sup- 
  

   posed 
  to 
  have 
  come 
  from 
  Mr 
  .Shillaber's 
  collection. 
  

  

  