﻿smith: 
  mollusca 
  fkom 
  chkistmas 
  island. 
  317 
  

  

  and 
  then 
  the 
  ornamentation 
  begins 
  to 
  die 
  away, 
  so 
  that 
  the 
  last 
  and 
  

   penultimate 
  whorls 
  appear 
  almost 
  smooth 
  to 
  the 
  naked 
  eye, 
  except 
  

   a 
  few 
  striae 
  round 
  the 
  lower 
  part 
  of 
  the 
  former. 
  The 
  colour-markings 
  

   are 
  pale 
  brown, 
  and 
  consist 
  on 
  the 
  penultimate 
  whorl 
  of 
  two 
  indistinct, 
  

  

  rather 
  interrupted 
  zones, 
  one 
  below 
  the 
  upper 
  suture 
  and 
  the 
  other 
  

   above 
  the 
  lower 
  suture. 
  These 
  two 
  bands 
  are 
  continued 
  on 
  the 
  body- 
  

   whorl, 
  and 
  there 
  is 
  a 
  third 
  around 
  the 
  base. 
  As 
  in 
  many 
  species, 
  the 
  

   upper 
  margin 
  of 
  the 
  whorls 
  is 
  somewhat 
  distinctly 
  marked 
  off. 
  

  

  Caedium 
  (Feagum) 
  edbescens, 
  n.sp. 
  

   Testa 
  parva, 
  tenuis, 
  valde 
  insequilateralis, 
  trigono-cordata, 
  antice 
  

   brevissima, 
  alba, 
  postice 
  producta, 
  leviter 
  acuminata, 
  rubescens, 
  inter- 
  

   dum 
  omnino 
  rubescens, 
  costis 
  radiantibus 
  circiter 
  38 
  instructi; 
  costse 
  

   supra 
  medium 
  valvarum 
  fere 
  planae, 
  delicate 
  squamulatse, 
  longe 
  

   latiores 
  quam 
  sulcis 
  separantibus 
  ; 
  costse 
  anteriores 
  et 
  posteriores 
  

   angustiores, 
  fortius 
  squamosae, 
  magis 
  prominentes, 
  sulcis 
  latioribus 
  

   profundioribus 
  transversim 
  sculptis 
  separatas 
  ; 
  valvse 
  tenues, 
  ad 
  

   marginem 
  ventralem 
  leviter 
  denticulatae, 
  postice 
  fortiter 
  dentatse 
  ; 
  

   pagina 
  interna 
  antice 
  alba, 
  postice 
  rubescens 
  vel 
  undique 
  rubescens, 
  

   radiatim 
  sulcata. 
  Long. 
  8, 
  alt. 
  6"5, 
  diam. 
  5-5 
  mm. 
  

  

  Hah. 
  — 
  Flying 
  Fish 
  Cove, 
  in 
  30 
  fathoms. 
  

  

  Allied 
  to 
  C. 
  crenelloicles, 
  Melvill, 
  and 
  carditceformis, 
  Reeve, 
  both 
  

   Indian 
  Ocean 
  species 
  ; 
  there 
  are 
  differences, 
  however, 
  of 
  form, 
  colour, 
  

   and 
  sculpture, 
  which 
  distinguish 
  these 
  three 
  one 
  from 
  the 
  other. 
  

   C. 
  carditceformis 
  is 
  longer, 
  the 
  ribs 
  are 
  finer 
  and 
  more 
  numerous, 
  and 
  

   the 
  colour 
  different. 
  C. 
  crenelloidea 
  is 
  narrower 
  in 
  front, 
  and 
  less 
  

   acuminate 
  behind, 
  has 
  more 
  ribs, 
  and 
  is 
  devoid 
  of 
  colour. 
  

  

  Two 
  specimens 
  were 
  obtained 
  by 
  Mr. 
  Kirkpatrick, 
  one 
  entirely 
  rosy- 
  

   red, 
  the 
  other 
  with 
  the 
  front 
  half 
  of 
  the 
  valves 
  almost 
  white, 
  and 
  the 
  

  

  