﻿lEEDALE 
  : 
  NOTES 
  ON 
  POLYPLACOPHOEA. 
  155 
  

  

  suggested 
  to 
  be 
  a 
  synonym 
  or 
  Tariety 
  of 
  C. 
  lurida, 
  Sowb., 
  from 
  Peru. 
  

   The 
  type 
  tablet 
  was 
  marked 
  Peru, 
  and 
  the 
  shell 
  is 
  lurida, 
  Sowb., 
  so 
  

   that 
  it" 
  is 
  certain 
  that 
  Peeve' 
  s 
  locality 
  is 
  erroneous. 
  

  

  Chiton 
  (Callistochiton) 
  Coppingeri, 
  Smith. 
  

   C. 
  {€.) 
  Coppingeri, 
  Smith, 
  Zool. 
  Alert, 
  1884, 
  p. 
  80, 
  pi. 
  vi, 
  fig. 
  e. 
  

  

  Though 
  included 
  in 
  the 
  Man. 
  Conch., 
  vol. 
  xiv, 
  p. 
  275, 
  as 
  a 
  Callisto- 
  

   chiton, 
  Pilsbry 
  later 
  (Proc. 
  Ac. 
  Nat. 
  Sci. 
  Phil., 
  1894, 
  p. 
  72) 
  stated 
  

   his 
  belief 
  that 
  this 
  was 
  the 
  young 
  of 
  Ischnochiton 
  fruticoms, 
  Gould. 
  

   Examination 
  of 
  the 
  type 
  enables 
  me 
  to 
  confirm 
  this 
  conjecture. 
  

  

  Atjstealian 
  Acanthochites. 
  

  

  The 
  numerous 
  species 
  recently 
  described 
  makes 
  it 
  difficult 
  to 
  assign 
  

   any 
  specimens 
  without 
  careful 
  comparison 
  of 
  typical 
  shells. 
  Therefore 
  

   Dr. 
  Thiele 
  (Revision 
  . 
  . 
  . 
  Chitonen, 
  i, 
  p. 
  48) 
  has 
  left 
  the 
  identification 
  

   of 
  Kochebrune's 
  and 
  Blainville's 
  species 
  to 
  Australian 
  Chiton 
  students. 
  

   He 
  has 
  pointed 
  out, 
  however, 
  that 
  Sueurii, 
  Blainv., 
  must 
  replace 
  the 
  

   familiar 
  ashestoides, 
  Smith. 
  From 
  the 
  good 
  figures 
  of 
  scaler, 
  Blainv., 
  

   given 
  by 
  Thiele, 
  it 
  should 
  be 
  easily 
  identified 
  if 
  Australian. 
  

  

  Acanthochites 
  turgidus, 
  Eoch., 
  alleged 
  to 
  have 
  been 
  collected 
  by 
  

   Peron 
  et 
  Lesueur, 
  may 
  be 
  BednalU, 
  Pilsbry. 
  

  

  Acanthochites 
  jucundus, 
  E,och., 
  supposed 
  to 
  have 
  been 
  collected 
  in 
  

   New 
  Holland 
  by 
  Belligny, 
  and 
  Cooks 
  Straits 
  by 
  Pilhol, 
  I 
  should 
  cross 
  

   off 
  the 
  Australian 
  list 
  until 
  rediscovered. 
  The 
  Cooks 
  Straits 
  shells 
  

   Thiele 
  admits 
  to 
  be 
  Zelandicus, 
  Q. 
  & 
  G., 
  and 
  the 
  New 
  Holland 
  shells 
  

   I 
  should 
  certainly 
  so 
  name. 
  The 
  bottle 
  contained 
  about 
  a 
  dozen 
  

   specimens, 
  and 
  it 
  is 
  almost 
  impossible 
  to 
  suggest 
  the 
  occurrence 
  of 
  so 
  

   plentiful 
  a 
  shell 
  in 
  Australian 
  waters 
  without 
  any 
  collector 
  retaking 
  

   it. 
  Pochebrune 
  has 
  named 
  a 
  shell 
  Ac. 
  Bellignyi, 
  apparently 
  collected 
  

   in 
  New 
  Caledonia 
  by 
  Belligny. 
  Thiele's 
  examination 
  of 
  the 
  type 
  

   proves 
  it 
  to 
  be 
  identical 
  with 
  jucundus, 
  and 
  I 
  conclude 
  this 
  habitat 
  

   must 
  also 
  be 
  doubted. 
  From 
  my 
  studies 
  of 
  these 
  specimens 
  and 
  

   localities, 
  I 
  must 
  advocate 
  the 
  non-acceptance 
  of 
  any 
  of 
  these 
  species 
  

   without 
  confirmation. 
  

  

  Acanthochites 
  tristis, 
  Eoch., 
  I 
  would 
  consider 
  the 
  same 
  as 
  the 
  

   species 
  described 
  by 
  Thiele 
  as 
  Thilenuisi 
  from 
  New 
  Zealand. 
  No 
  

   certainty 
  can 
  be 
  arrived 
  at 
  without 
  examination 
  of 
  suites 
  of 
  specimens 
  

   in 
  this 
  genus, 
  the 
  variation 
  in 
  Acanthochites 
  being 
  unknown. 
  The 
  

   sculpture 
  and 
  form 
  become 
  modified 
  by 
  the 
  action 
  of 
  environment, 
  

   and 
  this 
  has 
  not 
  yet 
  been 
  taken 
  into 
  consideration 
  when 
  describing 
  

   new 
  species. 
  I 
  am 
  led 
  to 
  make 
  this 
  statement 
  by 
  the 
  examination 
  

   of 
  a 
  series 
  of 
  Acanthochites 
  ruhiginosus, 
  Hutton. 
  Suter 
  figures 
  a 
  short 
  

   broad 
  low 
  shell, 
  and 
  this 
  form 
  I 
  have 
  seen 
  from 
  Stewart 
  Island. 
  

   A 
  series 
  dredged 
  by 
  Macgillivray 
  in 
  the 
  Hauraki 
  Gulf 
  consists 
  almost 
  

   entirely 
  of 
  elongate, 
  narrow, 
  very 
  highly 
  keeled 
  shells, 
  only 
  one, 
  

   a 
  young 
  specimen, 
  being 
  short, 
  broad, 
  and 
  low. 
  Another 
  lot 
  

   collected 
  by 
  the 
  early 
  explorers 
  is 
  mixed, 
  but 
  again 
  high 
  -keeled 
  

   forms 
  predominate. 
  The 
  sculpture 
  is 
  quite 
  variable, 
  the 
  pustules 
  

   varying 
  tremendously 
  in 
  size, 
  and 
  also 
  in 
  shape, 
  whilst 
  the 
  ribbing 
  

   on 
  the 
  anterior 
  valve 
  is 
  quite 
  an 
  uncertain 
  feature, 
  in 
  two 
  instances 
  

  

  