﻿94 
  PKOCEKDINGS 
  OF 
  THE 
  MALACOr.OGICAL 
  SOCIKTY. 
  

  

  P. 
  iiramosa, 
  Q. 
  & 
  Gr. 
  : 
  Pilsbry, 
  Man. 
  Conch., 
  1892, 
  ser. 
  i, 
  vol. 
  xiv, 
  

   p. 
  319, 
  pi. 
  Ixviii, 
  figs. 
  51-4; 
  Suter, 
  Proc. 
  Malac. 
  Soc, 
  1897, 
  

   vol. 
  ii, 
  p. 
  188; 
  Thiele, 
  Zool. 
  Chun, 
  1909, 
  Heft 
  Ivi, 
  p. 
  26, 
  

   pl. 
  iii, 
  figs. 
  37, 
  38. 
  

  

  Governed 
  by 
  Quoy's 
  figures, 
  which 
  to 
  me 
  showed 
  a 
  smooth 
  shell, 
  

   and 
  which 
  his 
  description 
  does 
  not 
  contradict, 
  I 
  had 
  identified 
  a 
  smooth 
  

   Plaxiphora 
  as 
  Iiramosa. 
  Having 
  done 
  this, 
  I 
  conld 
  not 
  separate 
  

   from 
  that 
  species 
  Suter's 
  subatrata, 
  which 
  seemed 
  synonymous 
  with 
  

   the 
  prior 
  Camplelli 
  of 
  Filhol. 
  

  

  TJpon 
  examination 
  of 
  the 
  shells 
  in 
  the 
  British 
  Museum, 
  I 
  found 
  

   that 
  all 
  the 
  shells 
  I 
  would 
  have 
  referred 
  to 
  hiramosa, 
  Q. 
  & 
  G., 
  

   were 
  marked 
  stiperba, 
  Cpr., 
  in 
  agreement 
  with 
  his 
  type. 
  Another 
  

   shell 
  which 
  I 
  did 
  not 
  know 
  was 
  marked 
  ecelata, 
  Reeve 
  = 
  cuprea, 
  

   Cpr., 
  but 
  it 
  was 
  unlike 
  the 
  type 
  of 
  ccdata, 
  Reeve. 
  I 
  soon 
  made 
  it 
  

   out 
  to 
  be 
  the 
  shell 
  Suter 
  called 
  hiramosa 
  in 
  the 
  Proc. 
  Malac. 
  Soc, 
  

   vol. 
  ii, 
  p. 
  188, 
  and 
  whose 
  description 
  of 
  a 
  corrugated 
  shell 
  had 
  

   always 
  puzzled 
  me. 
  

  

  I 
  re-read 
  Quoy's 
  account 
  and 
  noted 
  that 
  he 
  pointed 
  out 
  that 
  the 
  

   shells 
  he 
  had 
  differed 
  in 
  form 
  externally. 
  The 
  puzzle 
  was 
  now 
  easily 
  

   unravelled, 
  as, 
  by 
  allowing 
  Q,uoy 
  to 
  have 
  had 
  both 
  a 
  corrugated 
  and 
  

   smooth 
  shell, 
  the 
  history 
  reads 
  thus. 
  

  

  Hutton 
  in 
  1872 
  had 
  not 
  access 
  to 
  Quoy, 
  and 
  from 
  Deshayes 
  culled 
  

   his 
  account 
  of 
  hiramosus. 
  He 
  then 
  introduced 
  his 
  Tonicia 
  corticata 
  as 
  

   a 
  new 
  species. 
  His 
  description 
  of 
  this 
  shell 
  makes 
  it 
  very 
  easy 
  to 
  

   identify 
  the 
  corrugated 
  shell 
  Suter 
  adopted 
  as 
  hiramosa. 
  It 
  is 
  true 
  

   that 
  many 
  years 
  later 
  Hutton 
  thought 
  a 
  much 
  damaged 
  shell, 
  which 
  

   turned 
  out 
  to 
  be 
  Acanthopleura 
  gramilata, 
  Gm., 
  was 
  his 
  corticata, 
  

   but 
  the 
  description 
  of 
  the 
  latter 
  species 
  agrees 
  minutely 
  with 
  the 
  

   corrugated 
  hiramosa, 
  whilst 
  it 
  disagrees 
  just 
  as 
  completely 
  with 
  

   granulata. 
  In 
  1880, 
  with 
  access 
  to 
  Quoy, 
  Hutton 
  included 
  corticata 
  

   as 
  a 
  synonym 
  of 
  hiramosa, 
  and 
  states 
  " 
  lleeve 
  is 
  quite 
  wrong 
  in 
  uniting 
  

   this 
  species 
  with 
  C. 
  setiger, 
  King 
  ". 
  

  

  In 
  1892 
  Pilsbry, 
  knowing 
  neither 
  the 
  smooth 
  nor 
  corrugated 
  

   shell, 
  added 
  to 
  Quoy's 
  hiramosa 
  a 
  smooth 
  shell 
  described 
  in 
  MS. 
  

   by 
  Carpenter 
  as 
  superha. 
  He 
  doubted 
  Hutton's 
  attachment 
  of 
  his 
  

   corticata 
  to 
  hiramosa, 
  stating 
  " 
  in 
  sculpture 
  it 
  \_cortic(tta'] 
  must 
  resemble 
  

   P. 
  terminalis" 
  . 
  

  

  Suter 
  in 
  1897, 
  calling 
  the 
  corrugated 
  shell 
  hiramosa, 
  separated 
  

   superha 
  as 
  a 
  valid 
  species, 
  but 
  not 
  knowing 
  it, 
  save 
  from 
  the 
  

   description, 
  also 
  described 
  suhatrata, 
  which 
  he 
  noted 
  might 
  be 
  

   Camphelli 
  of 
  Pilhol. 
  

  

  "With 
  the 
  receipt 
  of 
  Quoy's 
  types 
  to 
  verify 
  these 
  conclusions, 
  which 
  

   I 
  found 
  to 
  be 
  correct, 
  I 
  also 
  received 
  Filhol's 
  type 
  of 
  Camphelli. 
  

   However, 
  Dr. 
  Thiele's 
  work 
  has 
  anticipated 
  me 
  in 
  this, 
  as 
  he 
  had 
  

   examined 
  these 
  types, 
  and 
  there 
  found 
  the 
  two 
  shells 
  represented. 
  

   He 
  has 
  followed 
  Suter 
  in 
  restricting 
  the 
  name 
  hiramosa 
  to 
  the 
  

   corrugated 
  shell, 
  and, 
  as 
  it 
  is 
  quite 
  distinctive, 
  no 
  further 
  confusion 
  

   can 
  possibly 
  ensue. 
  

  

  In 
  all 
  its 
  internal 
  as 
  well 
  as 
  external 
  features 
  it 
  is 
  quite 
  

   easily 
  separable 
  from 
  the 
  other 
  Australasian 
  Plaxiphora. 
  Prom 
  the 
  

  

  