﻿72 
  PROCEEDINGS 
  OF 
  THE 
  MALACOLOGICAL 
  SOCIETif. 
  

  

  96. 
  Area 
  foliata, 
  Forsk. 
  109. 
  Biplodonta 
  Zelandica, 
  Gray. 
  

  

  97. 
  A. 
  Lomingensis, 
  Lam. 
  110. 
  Lascsa 
  miliar 
  is, 
  Phil. 
  

  

  98. 
  Lima 
  bullata, 
  Born. 
  111. 
  Ervilia 
  biscidpta, 
  Gld. 
  

  

  99. 
  Fhilobnja 
  costata, 
  Bern. 
  112. 
  Chione 
  toreuma, 
  Gld. 
  

  

  100. 
  Modiolus 
  auriculatus, 
  Knmss,. 
  113. 
  Lutraria 
  ohlonga, 
  Gmol. 
  

  

  101. 
  Lithophaga 
  straminea,'D\xnk. 
  114. 
  Saxicava 
  arctica, 
  JAnue. 
  

  

  102. 
  Septffer 
  biloculan's, 
  Jjinne. 
  115. 
  GastrochcBna 
  Hetzii, 
  Desk. 
  

  

  103. 
  Modiolaria 
  impada, 
  Herrm. 
  116. 
  Chamafoliacea^ 
  Q,. 
  & 
  G. 
  

  

  104. 
  Meleagrina 
  vulgaris, 
  Sclium. 
  117. 
  Nautilus 
  pompilius, 
  L. 
  

  

  105. 
  Melina 
  nucleus, 
  Liune. 
  118. 
  i\^. 
  macromphalus, 
  Sowb. 
  

  

  106. 
  Julia 
  exquisita, 
  Gld. 
  119. 
  Spirula 
  spirula, 
  L. 
  

  

  107. 
  Spondiilus 
  ostreoides, 
  Smith. 
  120. 
  Argonaiita 
  argo, 
  L. 
  

  

  108. 
  Codakia 
  bella, 
  Conrad. 
  121. 
  A. 
  nodosa, 
  Sol. 
  

  

  Helcioniscus 
  craticulatus, 
  Suter. 
  

  

  HelcionisGUs 
  craiiculatus, 
  Suter, 
  Proc. 
  Malac. 
  Soc, 
  1905, 
  vol. 
  vi, 
  

   p. 
  352, 
  figs, 
  in 
  text. 
  

  

  On 
  the 
  rocks 
  at 
  the 
  Kermadecs, 
  between 
  tide-marks, 
  five 
  species 
  of 
  

   Limpets 
  live. 
  The 
  big 
  Ancistromesus 
  is 
  abundantly 
  distinct, 
  whilst 
  

   two 
  others 
  appear 
  to 
  be 
  local 
  in 
  their 
  distribution. 
  The 
  remaining 
  

   two 
  are 
  exceedingly 
  plentiful, 
  and 
  fine 
  typical 
  specimens 
  are 
  very 
  

   easiljr 
  differentiated. 
  These 
  occupy 
  rather 
  different 
  stations, 
  one 
  

   living 
  nearer 
  low 
  tide 
  than 
  the 
  other. 
  About 
  half-tide, 
  however, 
  they 
  

   intermingle, 
  and 
  both 
  species 
  there 
  are 
  small. 
  Shells 
  so 
  collected 
  

   were 
  studied 
  by 
  Suter, 
  so 
  that 
  the 
  description 
  contains 
  characters 
  of 
  

   both. 
  I 
  am, 
  therefore, 
  herewith 
  drawing 
  up 
  an 
  amended 
  description 
  

   of 
  craiiculatus, 
  Suter, 
  which 
  name 
  I 
  restrict 
  to 
  the 
  species 
  dwelling 
  

   higher 
  up 
  from 
  low 
  tide. 
  The 
  figures 
  and 
  type 
  measurement 
  agree 
  

   with 
  that 
  species. 
  

  

  Shell 
  oval, 
  anterior!}^ 
  scarcely 
  narrowed, 
  apex 
  about 
  the 
  anterior 
  

   third, 
  anterior 
  slope 
  straight, 
  posterior 
  slope 
  slightly 
  convex. 
  

   Margin 
  scarcely 
  creuulate. 
  Finely 
  ribbed, 
  ribs 
  between 
  forty 
  and 
  

   fifty 
  slightly 
  more 
  prominent 
  than 
  a 
  remaining 
  similar 
  number. 
  In 
  

   young 
  shells 
  these 
  ribs 
  almost 
  appear 
  beaded, 
  owing 
  to 
  the 
  concentric 
  

   lines 
  of 
  growth. 
  Colour 
  externallj' 
  orange 
  to 
  brownish, 
  with 
  or 
  

   without 
  darker 
  markings 
  or 
  streaks. 
  Inside 
  the 
  spatula 
  is 
  brown, 
  

   with 
  a 
  central 
  white 
  oval 
  spot 
  which 
  generally 
  increases 
  with 
  age. 
  

   Specimens 
  which 
  ai'e 
  marked 
  outside 
  with 
  dark 
  radiating 
  lines 
  show 
  

   these 
  inside, 
  otherwise 
  below 
  the 
  spatula 
  is 
  pale 
  orange, 
  iridescent. 
  

   Young 
  shells 
  are 
  naturally 
  more 
  depressed 
  than 
  older 
  ones. 
  

  

  Largest 
  specimen, 
  length 
  34, 
  breadth 
  30, 
  height 
  15 
  mm. 
  

   Medium 
  „ 
  „ 
  26 
  ,, 
  21 
  ,, 
  8 
  „ 
  

  

  Nerita 
  plicata, 
  Linne. 
  

   Nerita 
  2}licata, 
  Linne, 
  Syst. 
  Nat., 
  1758, 
  10th 
  ed., 
  p. 
  779. 
  

  

  In 
  the 
  Index 
  Faunae 
  IS'ovse 
  Zealandise 
  appears 
  Nerita 
  undata, 
  L., 
  

   under 
  which 
  name 
  a 
  shell 
  of 
  the 
  above 
  species 
  is 
  in 
  the 
  Canterbury 
  

   Museum. 
  I 
  can 
  trace 
  no 
  record 
  otherwise 
  for 
  ]S"ew 
  Zealand, 
  save 
  

   this 
  Kermadec 
  shell. 
  One 
  specimen 
  only 
  was 
  collected 
  alive 
  on 
  the 
  

   rocks 
  at 
  the 
  north-east 
  corner 
  of 
  Sunday 
  Island. 
  

  

  