﻿152 
  PROCEEDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIETT. 
  

  

  Ceemnobates 
  paeva, 
  Swainson, 
  1855. 
  

  

  Creynnolates 
  parva, 
  Swainson, 
  op. 
  cit., 
  p. 
  44, 
  pi. 
  vii, 
  fig. 
  3. 
  

   Ophicardelus 
  parvus, 
  Swainson 
  {Cremnolates), 
  Tate 
  & 
  May, 
  Proc. 
  

   Linn. 
  Soc. 
  N.S. 
  Wales, 
  vol. 
  xxvi, 
  p. 
  420. 
  

   Shell 
  ovate, 
  thin, 
  light, 
  covered 
  with 
  an 
  epidermis, 
  spire 
  slender, 
  

   pointed 
  ; 
  pillar 
  plaited 
  ; 
  first 
  close 
  to 
  the 
  top 
  of 
  the 
  aperture 
  ; 
  the 
  

   second 
  more 
  towards 
  the 
  base 
  (Swainson). 
  Sculpture 
  consisting 
  of 
  

   well-marked 
  growth-lines. 
  Colour 
  whitish 
  or 
  light 
  brown, 
  the 
  mouth 
  

   light 
  to 
  dark 
  brown. 
  Epidermis 
  thin, 
  horny, 
  mostly 
  lost, 
  the 
  surface 
  

   being 
  corroded. 
  Spire 
  conic, 
  typically 
  of 
  the 
  same 
  height 
  as 
  the 
  

   aperture, 
  but 
  considerably 
  lower 
  in 
  all 
  the 
  specimens 
  from 
  the 
  

   Antipodes 
  Islands. 
  Protoconch 
  minute, 
  pointed. 
  Whorls 
  4, 
  the 
  last 
  

   very 
  large, 
  convex, 
  a 
  little 
  fiattened 
  outside 
  the 
  suture 
  ; 
  base 
  flatly 
  

  

  convex. 
  Suture 
  deep. 
  Aperture 
  vertical, 
  ovate, 
  angled 
  above, 
  

   rounded 
  below. 
  Peristome 
  continuous 
  ; 
  outer 
  lip 
  thin 
  and 
  sharp, 
  

   broadly 
  arched; 
  basal 
  lip 
  regularly 
  convex. 
  Columella 
  slightly 
  

   oblique, 
  with 
  2 
  strong, 
  white 
  plaits, 
  the 
  upper 
  one 
  larger, 
  near 
  the 
  

   top 
  of 
  the 
  aperture, 
  the 
  lower 
  one 
  smaller 
  and 
  at 
  about 
  the 
  middle 
  

   of 
  the 
  columella 
  ; 
  inner 
  lip 
  smooth, 
  white, 
  spreading 
  a 
  little 
  beyond 
  

   the 
  columella, 
  and 
  uniting 
  the 
  margins 
  of 
  the 
  peristome 
  by 
  a 
  distinct 
  

   sharp 
  ridge. 
  There 
  is 
  no 
  trace 
  of 
  an 
  umbilical 
  fissure. 
  

  

  Diam. 
  5, 
  height 
  7 
  '5 
  mm. 
  Largest 
  specimen 
  from 
  the 
  Antipodes 
  

   Islands. 
  

  

  Animal, 
  jaw, 
  and 
  radula 
  as 
  described 
  for 
  the 
  genus. 
  

  

  Our 
  figure 
  is 
  taken 
  from 
  a 
  specimen 
  collected 
  at 
  Tasman's 
  Arch, 
  

   South 
  Tasmania, 
  by 
  Mr. 
  W. 
  L. 
  May. 
  

  

  