﻿92 
  PKOCEKDINGS 
  OF 
  THE 
  MALICOLOGICAL 
  SOCIICTY. 
  

  

  The 
  whereabouts 
  of 
  the 
  type 
  of 
  Quoy 
  & 
  Graimard's 
  species 
  was 
  

   unknown, 
  but 
  examination 
  of 
  the 
  type 
  of 
  Kochebrune's 
  Urvillei 
  

   showed 
  that 
  that 
  name 
  was 
  founded 
  upon 
  it. 
  The 
  shell 
  was 
  easily 
  

   recognized 
  from 
  Quoy's 
  beautiful 
  figures, 
  though 
  no 
  one 
  would 
  have 
  

   guessed 
  it 
  from 
  Eochebrune's 
  description. 
  Apparently 
  the 
  label 
  had 
  

   been 
  lost, 
  and 
  without 
  referring 
  to 
  the 
  " 
  Yoy. 
  de 
  1' 
  Astrolabe 
  " 
  

   Rochebrune 
  renamed 
  it, 
  hiding 
  its 
  identity 
  under 
  a 
  careless 
  

   diagnosis 
  ! 
  

  

  Thiele 
  has 
  already 
  pointed 
  out 
  that 
  Urvillei, 
  Roche. 
  = 
  decussatus, 
  

   Reeve 
  (Zool. 
  Chun, 
  1909, 
  Heft 
  Ivi, 
  p. 
  8). 
  Examination 
  of 
  the 
  

   types 
  of 
  the 
  species 
  denoted 
  as 
  synonymous 
  absolutely 
  confirms 
  this, 
  

   but 
  strangely 
  the 
  species 
  from 
  the 
  Swan 
  River 
  named 
  castas, 
  Cpr. 
  MS., 
  

   and 
  whose 
  description 
  is 
  given 
  in 
  the 
  Man. 
  Conch., 
  vol. 
  xiv, 
  p. 
  94, 
  

   is 
  quite 
  distinct, 
  and 
  is 
  either 
  a 
  good 
  variety 
  or 
  species 
  accoi'ding 
  to 
  

   whether 
  it 
  is 
  the 
  only 
  form 
  on 
  the 
  Westralian 
  coast. 
  

  

  Plaxiphoha 
  c^lata 
  (Reeve). 
  

  

  Chiton 
  C(Blatus, 
  Rve., 
  Conch. 
  Icon., 
  1847, 
  pi. 
  xvii, 
  fig. 
  101. 
  

   C. 
  {Plaxvphora) 
  terminalis. 
  Smith, 
  Voy. 
  Erebus 
  and 
  Terror, 
  Moll., 
  

   1874, 
  p. 
  4, 
  pi. 
  i, 
  fig. 
  13. 
  

  

  This 
  synonymy 
  is 
  not 
  novel, 
  having 
  been 
  published 
  by 
  Suter 
  

   (Proc. 
  Malac. 
  Soc, 
  1897, 
  vol. 
  ii, 
  p. 
  189), 
  and 
  I 
  had 
  not 
  intended 
  to 
  

   remark 
  upon 
  it. 
  But 
  Thiele 
  has 
  published 
  a 
  new 
  species, 
  Schauins- 
  

   landi 
  (Zool. 
  Chun, 
  1909, 
  Heft 
  Ivi, 
  p. 
  28, 
  pi. 
  iii, 
  figs. 
  41-3), 
  which 
  

   has 
  induced 
  me 
  to 
  record 
  these 
  details 
  of 
  the 
  types. 
  The 
  tablet 
  

   which 
  bears 
  Reeve's 
  name 
  has 
  on 
  it 
  four 
  specimens, 
  the 
  first 
  one 
  of 
  

   which 
  appears 
  to 
  be 
  the 
  shell 
  from 
  which 
  Reeve's 
  figure 
  was 
  prepared. 
  

  

  The 
  tablet 
  which 
  contains 
  Smith's 
  typical 
  specimens 
  has 
  six 
  shells 
  

   of 
  varying 
  sizes. 
  A 
  shell 
  of 
  the 
  same 
  size 
  as 
  Reeve's 
  type 
  was 
  

   critically 
  compared 
  with 
  it 
  and 
  found 
  inseparable. 
  The 
  lai'gest 
  shell, 
  

   which 
  to 
  me 
  was 
  certainly 
  conspecific, 
  showed 
  finer 
  sculpture 
  and 
  

   differences 
  consistent 
  with 
  increased 
  age 
  and 
  growth. 
  When 
  Smith 
  

   separated 
  his 
  terminalis 
  he 
  was 
  using 
  shells 
  marked 
  coilata, 
  Rve. 
  

   {= 
  cuprea, 
  Cpr.), 
  for 
  comparison. 
  These, 
  as 
  I 
  presently 
  show, 
  were 
  

   hiramosa, 
  Q. 
  & 
  G. 
  Thiele's 
  figures 
  and 
  description 
  of 
  his 
  Schaiiins- 
  

   landi 
  agree 
  perfectly 
  with 
  this 
  large 
  terminalis, 
  and 
  if 
  it 
  should 
  be 
  

   found 
  later 
  necessary 
  to 
  separate 
  it, 
  then 
  the 
  prior 
  terminalis 
  must 
  be 
  

   used, 
  so 
  that 
  in 
  any 
  case 
  Schaninslandi 
  is 
  a 
  synonym. 
  

  

  Plaxiphoha 
  obtecta, 
  Pilsbry. 
  

  

  In 
  the 
  Nachr. 
  deutsch. 
  malak. 
  Ges., 
  1909, 
  vol. 
  xli, 
  p. 
  72, 
  Suter,- 
  

   correcting 
  Wissel's 
  identifications 
  (!) 
  (Zool. 
  Jahrb. 
  Syst., 
  1904, 
  xx, 
  

   pp. 
  591-662) 
  of 
  !New 
  Zealand 
  Chitons, 
  has 
  accepted 
  the 
  identity 
  

   of 
  the 
  later-named 
  P. 
  Stiteri, 
  Pils., 
  from 
  which 
  view 
  he 
  had 
  

   previously 
  dissented. 
  He 
  still 
  retains 
  in 
  the 
  synonymy 
  of 
  this 
  

   species, 
  however, 
  Mo2Mlia 
  ciliata, 
  Sow., 
  of 
  Hutton's 
  Manual, 
  p. 
  116. 
  

   In 
  that 
  place 
  Hutton 
  quotes 
  Reeve's 
  figure, 
  and 
  copies 
  Reeve's 
  

   description. 
  Reeve 
  figured 
  a 
  shell 
  like 
  ccdata, 
  and 
  states 
  New 
  

   Zealand 
  (Earl). 
  No 
  one 
  could 
  confuse 
  Reeve's 
  figure 
  with 
  the 
  shell 
  

  

  