﻿494 
  COLLECTIONS 
  FROM 
  THE 
  WESTERN 
  INDIAN 
  OCEAN. 
  

  

  This 
  pretty 
  little 
  species 
  must 
  not 
  be 
  confounded 
  with 
  C. 
  galaxias. 
  

   Reeve 
  (Conch. 
  Icon. 
  figs. 
  229 
  «, 
  b). 
  The 
  latter 
  has 
  a 
  similar 
  inter- 
  

   rupted 
  line 
  at 
  the 
  upper 
  part 
  of 
  the 
  whorls, 
  and 
  an 
  indication 
  of 
  a 
  

   second 
  towards 
  the 
  base 
  of 
  the 
  last, 
  but 
  is 
  nevertheless 
  quite 
  distinct, 
  

   being 
  destitute 
  of 
  the 
  roundly 
  meshed 
  network, 
  and 
  more 
  elongate 
  

   in 
  form. 
  It 
  has 
  an 
  opaque-white 
  dotted 
  line 
  immediately 
  above 
  the 
  

   suture 
  falling 
  round 
  the 
  middle 
  of 
  the 
  body-whorl, 
  and 
  consists 
  of 
  

   two 
  more 
  normal 
  volutions 
  than 
  C. 
  moleculma. 
  

  

  28. 
  Columbella 
  cincinnata. 
  (Plate 
  XLIV. 
  fig. 
  H.) 
  

   Martens, 
  Moll. 
  Mminthis, 
  p. 
  248, 
  pi. 
  20. 
  fig. 
  14. 
  

  

  Eagle 
  Island, 
  Amirantes, 
  12 
  fms. 
  ('■Alert'); 
  Mauritius 
  (Martens). 
  

  

  Of 
  this 
  little 
  species 
  I 
  have 
  several 
  examples 
  before 
  me 
  in 
  adult 
  

   condition. 
  In 
  these 
  I 
  count 
  five 
  normal 
  whorls 
  and 
  three 
  nuclear, 
  

   the 
  former 
  being 
  nearly 
  straight 
  at 
  the 
  sides 
  and 
  the 
  latter 
  convex. 
  

   The 
  labrum 
  is 
  but 
  very 
  little 
  thickened, 
  has 
  a 
  shallow 
  sinuation 
  above 
  

   and 
  a 
  few 
  denticles 
  within. 
  The 
  columella 
  is 
  subperpendiciLlar, 
  

   covered 
  with 
  a 
  thin 
  callus, 
  having 
  a 
  prominent 
  free 
  margin. 
  

  

  29. 
  Columbella 
  rufopiperata. 
  (Plate 
  XLIV. 
  fig. 
  I.) 
  

  

  Shell 
  minute, 
  ovate-fusiform, 
  flesh-coloured, 
  everywhere 
  minutely 
  

   dotted 
  with 
  red 
  and 
  marked 
  with 
  an 
  indistinct 
  pale 
  liue 
  around 
  the 
  

   middle 
  of 
  the 
  body-whorl. 
  Volutions 
  7, 
  three 
  apical 
  smooth, 
  

   convex 
  ; 
  the 
  rest 
  somewhat 
  gradated, 
  flat 
  at 
  the 
  sides, 
  very 
  strongly 
  

   longitudinally 
  costate. 
  Eibs 
  about 
  twelve 
  in 
  number, 
  continuous 
  

   up 
  the 
  spire, 
  rounded, 
  thick, 
  having 
  the 
  upper 
  end 
  crossed 
  bj'^ 
  

   a 
  shallow 
  groove, 
  giving 
  the 
  whorls 
  a 
  margined 
  appearance. 
  The 
  

   body-whorl 
  is 
  convex 
  at 
  the 
  middle, 
  somewhat 
  contracted 
  below, 
  

   transversely 
  grooved 
  at 
  the 
  base, 
  with 
  the 
  costoe 
  less 
  strongly 
  deve- 
  

   loped 
  as 
  the 
  labrum 
  is 
  approached. 
  Aperture 
  very 
  small 
  and 
  

   narrow, 
  only 
  slightly 
  contracted 
  into 
  a 
  short 
  oblique 
  canal 
  ; 
  the 
  

   outer 
  Up 
  is 
  distinctly 
  sinuated 
  below 
  the 
  suture 
  and 
  thickened 
  

   within. 
  The 
  columella 
  is 
  rounded, 
  prominent 
  at 
  the 
  middle, 
  and 
  

   covered 
  with 
  a 
  callus. 
  Length 
  3 
  millim., 
  width 
  1^. 
  

  

  Etoile 
  Island, 
  Amirantes, 
  13 
  fms. 
  

  

  This 
  minute 
  species 
  to 
  the 
  naked 
  eye 
  appears 
  to 
  be 
  of 
  a 
  pinkish- 
  

   brown 
  colour, 
  but 
  on 
  examination 
  with 
  a 
  lens 
  is 
  seen 
  to 
  be 
  minutely 
  

   dotted 
  with 
  red 
  upon 
  a 
  pale 
  flesh-coloured 
  ground. 
  The 
  ribs 
  are 
  

   very 
  strong 
  for 
  so 
  small 
  a 
  shell. 
  

  

  30. 
  Columbella 
  amirantium. 
  (Plate 
  XLIV. 
  fig. 
  K.) 
  

  

  Shell 
  small, 
  broad, 
  ovate-fusiform, 
  subpellucid, 
  with 
  the 
  upper 
  

   part 
  of 
  the 
  whorls 
  whitish 
  and 
  pale 
  pink 
  bene'ath, 
  ornamented 
  with 
  

   some 
  opaque 
  white 
  spots 
  below 
  the 
  suture 
  and 
  a 
  band 
  of 
  small 
  dots 
  

   of 
  the 
  same 
  colour 
  round 
  the 
  middle 
  of 
  the 
  body-whorl, 
  the 
  basal 
  

   extremity 
  of 
  which 
  is 
  dark 
  pink 
  or 
  black 
  dotted 
  with 
  white. 
  

  

  