﻿PRESTON: 
  ON 
  ABYSSINIAN 
  MOLLUSCA. 
  167 
  

  

  margined; 
  columella 
  vertically 
  descending, 
  obliquely 
  truncate 
  ; 
  labrum 
  

   simple, 
  acute; 
  aperture 
  elongately 
  inversely 
  auriform. 
  Alt. 
  18, 
  

   diam. 
  maj. 
  7'75, 
  min. 
  7 
  mm.; 
  aperture, 
  alt. 
  8, 
  diam. 
  3'75mm. 
  

  

  4 
  

  

  A 
  delicate 
  little 
  species 
  which 
  is 
  perhaps 
  the 
  least 
  of 
  the 
  true 
  

   AchatiiKB 
  yet 
  described. 
  Notwithstanding 
  the 
  small 
  dimensions 
  of 
  

   the 
  specimens 
  before 
  me, 
  I 
  think 
  there 
  can 
  be 
  no 
  doubt 
  that 
  they 
  are 
  

   fully 
  adult. 
  

  

  LiMICOLARIA 
  JlCKELIANA, 
  n.Sp. 
  

  

  Shell 
  elongately 
  ovate, 
  white, 
  painted 
  with 
  reddish 
  chestnut 
  

   transverse 
  flame 
  markings 
  ; 
  whorls 
  7, 
  moderately 
  inflated, 
  presenting 
  

   a 
  somewhat 
  finely 
  malleated 
  appearance 
  ; 
  sutures 
  impressed, 
  crenellate 
  

   with 
  the 
  lines 
  of 
  growth; 
  umbilicus 
  very 
  narrow, 
  deep, 
  half 
  concealed 
  

   by 
  the 
  reflection 
  of 
  the 
  columella 
  ; 
  columella 
  white, 
  reflexed, 
  slightly 
  

   excavated 
  above, 
  descending 
  vertically, 
  a 
  thin 
  callus 
  joining 
  it 
  with 
  

   the 
  lip 
  above 
  ; 
  labrum 
  acute, 
  aperture 
  broadly 
  inversely 
  auriform 
  ; 
  

   interior 
  of 
  shell 
  very 
  pale 
  bluish 
  white, 
  and 
  showing 
  the 
  chestnut 
  

  

  colour-bands 
  through 
  the 
  shell. 
  Alt. 
  34-5, 
  diam. 
  maj. 
  18, 
  min. 
  

   16-5 
  mm. 
  ; 
  aperture, 
  alt. 
  15, 
  diam. 
  8 
  mm. 
  

  

  Allied 
  to 
  Z. 
  oviformis, 
  Ancey,' 
  from 
  the 
  Somali 
  coast, 
  but 
  smaller, 
  

   with 
  less 
  inflated 
  whorls, 
  straighter 
  columella, 
  and 
  lacking 
  the 
  fine 
  

   decussate 
  sculpture 
  of 
  that 
  species. 
  

  

  A 
  specimen 
  of 
  the 
  egg 
  was 
  also 
  sent 
  home 
  with 
  the 
  shell 
  ; 
  its 
  

   dimensions 
  are, 
  length 
  5-25, 
  breadth 
  3'5mm. 
  ; 
  it 
  is 
  elongately 
  ovate, 
  

   calcareous, 
  and 
  of 
  a 
  dirty 
  white 
  colour. 
  

  

  1 
  Nautilus, 
  vol. 
  xiv, 
  p. 
  42 
  ; 
  Journ. 
  de 
  Conch., 
  vol. 
  xlix, 
  p. 
  140. 
  

  

  