﻿500 
  COLLECTIONS 
  FROM 
  THE 
  WESTERN 
  INDIAN 
  OCEAN. 
  

  

  58. 
  Ranella 
  pusilla, 
  var. 
  

  

  Sej'chclles, 
  4-12 
  fms. 
  ; 
  also 
  Darros 
  Island, 
  in 
  22 
  fms. 
  

  

  The 
  variety 
  from 
  the 
  Seychelles 
  is 
  white, 
  stained 
  with 
  purple 
  on 
  

   the 
  posterior 
  side 
  of 
  the 
  varices, 
  and 
  with 
  pinkish 
  brown 
  at 
  the 
  top 
  

   of 
  the 
  body-whorl 
  at 
  the 
  suture. 
  The 
  last 
  whorl 
  has 
  also 
  a 
  bright 
  

   pink 
  band 
  low 
  down 
  on 
  the 
  dorsal 
  side, 
  a 
  spot 
  of 
  the 
  same 
  colour 
  

   on 
  the 
  middle 
  of 
  each 
  lateral 
  varix, 
  and 
  a 
  black 
  extremity. 
  The 
  

   mouth 
  of 
  the 
  aperture 
  is 
  of 
  a 
  pretty 
  purple-pink 
  colour, 
  armed 
  with 
  

   seven 
  white 
  tubercles 
  on 
  the 
  outer 
  lip, 
  and 
  four 
  or 
  five 
  on 
  the 
  

   inner. 
  

  

  59. 
  Triton 
  (Persona) 
  cancellinus, 
  Roissij. 
  

  

  Var. 
  = 
  Triton 
  decipiens, 
  Reeve, 
  Conch. 
  Icon. 
  fig. 
  102. 
  

  

  Providence 
  Eeef, 
  Mascarenes, 
  in 
  24 
  fms. 
  

  

  60. 
  Natica 
  tessellata. 
  

   Philippi, 
  Conch.- 
  Cab. 
  ed. 
  2, 
  p. 
  48, 
  pi. 
  7. 
  fig. 
  7. 
  

  

  Mozambique, 
  between 
  tide-marks. 
  

  

  The 
  exact 
  locality 
  of 
  this 
  species 
  has 
  not, 
  I 
  believe, 
  been 
  hitherto 
  

   known. 
  

  

  Gl. 
  Cyprsea 
  asellus, 
  Linne. 
  

   Seychelles, 
  in 
  4-12 
  fms. 
  

  

  62. 
  Trivia 
  scabriuscula, 
  Graij. 
  

   African 
  Island, 
  Amirantes. 
  

  

  63. 
  Erato 
  corrugata, 
  Hinds. 
  

  

  Eagle 
  Island, 
  Amirantes, 
  in 
  12 
  fms. 
  

  

  I 
  fail 
  to 
  discover 
  any 
  distinction 
  between 
  this 
  species 
  and 
  E. 
  

   nana, 
  Duclos. 
  It 
  is 
  of 
  a 
  greenish-yellow 
  colour, 
  having 
  the 
  an- 
  

   terior 
  extremity 
  and 
  sometimes 
  the 
  apex 
  of 
  the 
  spire 
  rose-tinted. 
  

   The 
  surface 
  is 
  granulated 
  throughout, 
  the 
  granules 
  being 
  elongate, 
  

   and 
  down 
  the 
  dorsal 
  surface 
  there 
  is 
  a 
  conspicuous 
  deep 
  groove. 
  

   Reeve's 
  figure 
  (Conch. 
  Icon. 
  fig. 
  12) 
  does 
  not 
  ai)parently 
  represent 
  this 
  

   species. 
  

  

  64. 
  Littorina 
  glabrata, 
  PhiUppi. 
  

  

  Eagle 
  Island, 
  Amirantes. 
  

  

  65. 
  Cerithium 
  echinatum, 
  Lamarck. 
  

   African 
  and 
  Darros 
  Islands, 
  on 
  the 
  shore. 
  

  

  66. 
  Cerithium 
  columna, 
  Soiverly. 
  

   African 
  Island. 
  

  

  