﻿M0LLXJ8CA. 
  495 
  

  

  "Whorls 
  8; 
  five 
  nuclear 
  convex, 
  pink, 
  finely 
  , 
  longitudinally 
  lirate 
  ; 
  

   the 
  rest 
  strongly 
  costate 
  and 
  rather 
  convex 
  at 
  the 
  sides. 
  The 
  ribs 
  

   are 
  thick, 
  rounded, 
  about 
  sixteen 
  in 
  number 
  on 
  the 
  penultimate 
  

   whorl, 
  subobsolete 
  behind 
  the 
  labrum. 
  The 
  last 
  volution 
  is 
  broad 
  

   above, 
  contracted 
  inferiorh', 
  the 
  extremity 
  being 
  crossed 
  by 
  several 
  

   coarsish 
  grooves 
  and 
  ridges. 
  Aperture 
  narrow, 
  only 
  a 
  little 
  nar- 
  

   rowed 
  anteriorly 
  into 
  a 
  slightly 
  oblicjue 
  open 
  canal. 
  Outer 
  lip 
  

   much 
  thickened 
  by 
  a 
  strong 
  exteriial 
  white 
  varix, 
  marked 
  with 
  two 
  

   brownish-pink 
  spots, 
  one 
  above 
  and 
  the 
  other 
  below 
  the 
  middle 
  ; 
  it 
  

   is 
  also 
  internally 
  thickened, 
  armed 
  with 
  eight 
  denticles, 
  and 
  sub- 
  

   sinuated 
  at 
  the 
  upper 
  end. 
  The 
  columella 
  is 
  covered 
  with 
  a 
  callus 
  

   bearing 
  about 
  five 
  small 
  tubercles 
  near 
  the 
  middle. 
  Length 
  5| 
  

   millim., 
  width 
  3, 
  

  

  Eagle 
  Island, 
  Amirautes, 
  12fms. 
  ; 
  sand 
  and 
  coral 
  bottom. 
  

  

  This 
  is 
  a 
  very 
  pretty 
  little 
  species, 
  having 
  the 
  same 
  form 
  as 
  the 
  

   typical 
  group 
  of 
  the 
  genus. 
  

  

  31. 
  Coluiubella 
  conspersa. 
  

   Gaskoin 
  ; 
  Reeve, 
  Conch. 
  Icon. 
  vol. 
  xi. 
  fig. 
  99. 
  

  

  Providence 
  Reef, 
  Mascarenes, 
  24 
  fms. 
  ; 
  and 
  He 
  des 
  Neufs, 
  Ami- 
  

   rautes, 
  in 
  15 
  fms. 
  

  

  Reeve's 
  figure 
  is 
  fairly 
  good 
  in 
  respect 
  of 
  form 
  but 
  misleading 
  as 
  

   regards 
  the 
  colour 
  of 
  this 
  species. 
  It 
  is 
  a 
  whitish 
  or 
  pinkish-white 
  

   shell, 
  having 
  the 
  upper 
  and 
  lower 
  parts 
  of 
  the 
  whorls 
  edged 
  with 
  

   opaque 
  white, 
  and 
  a 
  narrow 
  zone 
  of 
  the 
  same 
  colour 
  round 
  the 
  middle 
  

   of 
  the 
  body-whorl. 
  It 
  is 
  also 
  blotched 
  with 
  olive-yellow 
  and 
  dotted 
  

   with 
  that 
  tint 
  upon 
  the 
  opaque 
  bands. 
  The 
  labrum 
  and 
  columella 
  

   are 
  tinged 
  with 
  lilac-pink, 
  the 
  former 
  being 
  armed 
  with 
  seven 
  or 
  

   eight 
  denticles 
  and 
  the 
  latter 
  with 
  about 
  six 
  transverse 
  tubercles 
  

   upon 
  a 
  prominent 
  callosity. 
  

  

  32. 
  Columbella 
  albocaudata. 
  (Plate 
  XLIY. 
  fig. 
  L.) 
  

  

  Shell 
  small, 
  ovate 
  -fusiform, 
  pale 
  pink, 
  paler 
  at 
  the 
  apex 
  and 
  white 
  

   at 
  the 
  extremity 
  of 
  the 
  body-whorl, 
  bordered 
  above 
  with 
  a 
  few 
  

   spots 
  of 
  a 
  reddish 
  colour. 
  AVhorls 
  8 
  ; 
  four 
  apical 
  glossy, 
  excentric, 
  

   convex 
  ; 
  the 
  rest 
  less 
  swollen, 
  separated 
  by 
  a 
  moderately 
  deep 
  

   suture 
  ; 
  last 
  whorl 
  scarcely 
  angled 
  at 
  the 
  middle, 
  contracted 
  

   towards 
  the 
  anterior 
  end, 
  which 
  is 
  transversely 
  grooved 
  and 
  ridged, 
  

   the 
  ridges 
  being 
  about 
  twelve 
  in 
  number. 
  Aperture 
  small, 
  con- 
  

   tracted 
  anteriorly 
  into 
  a 
  short 
  open 
  oblique 
  canal. 
  Labrum 
  thin 
  at 
  

   the 
  edge, 
  strengthened 
  with 
  a 
  varix 
  at 
  a 
  little 
  distance 
  from 
  the 
  

   margin, 
  which 
  is 
  distinctly 
  sinuated 
  towards 
  the 
  upper 
  part, 
  and 
  

   furnished 
  within 
  with 
  about 
  five 
  denticles. 
  Columella 
  perpendicular, 
  

   arcuate 
  at 
  the 
  middle, 
  covered 
  with 
  a 
  thin 
  callus 
  supporting 
  about 
  

   four 
  cross 
  tubercles. 
  Length 
  6 
  millim., 
  width 
  2g. 
  

  

  Providence 
  Reef, 
  Mascarenes, 
  in 
  24 
  fms.; 
  bottom 
  sand 
  and 
  

   coral. 
  

  

  