﻿278 
  MARINE 
  MOLLUSCA 
  DESCRIBED 
  BY 
  P. 
  P. 
  CARPENTER 
  

  

  pressis 
  ; 
  valvis 
  terminalibus 
  ut 
  in 
  areis 
  lateralibiis 
  costatis 
  ; 
  valva 
  postica 
  mucrone 
  subincdiana, 
  

   baud 
  elevata 
  : 
  intus 
  albida, 
  subrosacea 
  ; 
  valvis 
  utraque 
  latere 
  macule 
  aurantio 
  elongato 
  

   ornatis, 
  sinuibus 
  centralibus 
  parvis, 
  expansis; 
  marginibus 
  externis 
  subgrunda 
  typice 
  obtectis 
  ; 
  

   laminis 
  lateralibus 
  bis, 
  terminalibus 
  circiter 
  xii. 
  incisis: 
  limbo 
  pallii, 
  granuloso, 
  granis 
  

   ovalibus, 
  vix 
  imbricatis 
  baud 
  striatis. 
  Long. 
  .75, 
  lat. 
  .45, 
  div. 
  110°. 
  

  

  "Hab. 
  — 
  In 
  sinu 
  Pugetiano 
  specimen 
  unicum 
  pisavit 
  Kennerley." 
  [Carpenter, 
  1865 
  p. 
  60] 
  

  

  Tbe 
  type 
  of 
  this 
  species 
  is 
  composed 
  of 
  four 
  loose 
  valves 
  in 
  the 
  U. 
  S. 
  National 
  Museum. 
  

   The 
  illustrations 
  by 
  Pilsbry 
  (1893, 
  PI. 
  17, 
  figs. 
  64, 
  65) 
  are 
  of 
  the 
  type. 
  

  

  Holofype. 
  — 
  U. 
  S. 
  National 
  Museum, 
  no. 
  30946 
  

  

  Distribution. 
  — 
  Puget 
  Sound, 
  Washington 
  (type) 
  ; 
  Shumagin 
  Islands, 
  Alaska, 
  to 
  Puget 
  

   Sound, 
  Washington 
  (Dall) 
  

  

  Genus 
  Callistochiton 
  Dall, 
  1882 
  

  

  Callistochiton 
  Dai.l, 
  1882, 
  U. 
  S. 
  Nat. 
  Mus., 
  Proc, 
  vol. 
  4, 
  p. 
  283, 
  289, 
  290 
  no 
  species 
  men- 
  

   tioned 
  

  

  Type 
  species 
  by 
  virtue 
  of 
  the 
  first 
  species^^o 
  published 
  in 
  connection 
  with 
  generic 
  name 
  

   (Opin. 
  46, 
  Int. 
  Rules 
  Zool. 
  Nomen.), 
  Pilsbry, 
  1892, 
  Man. 
  Conch., 
  vol. 
  XIV, 
  p. 
  260, 
  

   Chiton 
  pidchcUus 
  Gray, 
  1828, 
  Spicilegia 
  Zoologica, 
  vol. 
  1, 
  p. 
  1, 
  p. 
  6, 
  pi. 
  3, 
  fig. 
  9. 
  Living. 
  

   Islay, 
  Peru 
  to 
  Arica, 
  Chile. 
  Pilsbry, 
  1892, 
  ]\Ian. 
  Conch., 
  vol. 
  XIV, 
  pi. 
  60, 
  figs. 
  1-6 
  

  

  Callistochiton 
  decoratus 
  Pilsbry 
  

   (PI. 
  Z?>, 
  figs. 
  15-21) 
  

  

  Chiton 
  {Callistochiton) 
  decoratus 
  "Carpenter," 
  Dall 
  in 
  Orcutt 
  1886, 
  U. 
  S. 
  Nat. 
  Mus., 
  

  

  Proc, 
  vol. 
  8, 
  p. 
  544 
  not 
  described 
  

   Callistochiton 
  decoratus 
  Carpenter 
  ms., 
  Pilsbry, 
  1892, 
  Man. 
  Conch., 
  vol. 
  XIV, 
  p. 
  269, 
  

  

  pi. 
  58, 
  figs. 
  17-20; 
  1893, 
  Man. 
  Conch., 
  vol. 
  XV, 
  p. 
  87, 
  pi. 
  16, 
  fig. 
  54; 
  Dall, 
  1921, 
  p. 
  194; 
  

  

  Oldroyd, 
  1927, 
  vol. 
  II, 
  pt. 
  Ill, 
  p. 
  294; 
  Burch, 
  1947, 
  no. 
  66, 
  p. 
  18 
  

  

  Although 
  Pilsbry 
  utilized 
  Carpenter's 
  manuscript 
  name 
  for 
  this 
  species, 
  he 
  did 
  not 
  use 
  

   Carpenter's 
  description 
  or 
  his 
  type. 
  Pilsbry's 
  type 
  was 
  a 
  specimen 
  in 
  the 
  Academy 
  of 
  Natural 
  

   Sciences, 
  Philadelphia. 
  In 
  this 
  case, 
  therefore, 
  the 
  species 
  should 
  be 
  attributed 
  to 
  Pilsbry 
  

   and 
  not 
  Carpenter. 
  The 
  synonymy, 
  therefore, 
  is 
  not 
  intended 
  to 
  be 
  complete. 
  

  

  In 
  the 
  Carpenter 
  Collection 
  in 
  the 
  Redpath 
  Museum, 
  there 
  are 
  12 
  fine 
  specimens 
  on 
  

   Carpenter's 
  glass 
  mounts 
  with 
  a 
  Carpenter 
  label, 
  "type 
  S. 
  Diego 
  Hemphill 
  (Comp. 
  

   vcredcntiens)." 
  These 
  specimens 
  were 
  evidently 
  Carpenter's 
  ms. 
  types. 
  Pilsbry 
  (1893) 
  de- 
  

   scribed 
  differences 
  between 
  the 
  typical 
  form 
  from 
  Lower 
  California 
  and 
  an 
  individual 
  from 
  

   San 
  Diego 
  collected 
  by 
  Henry 
  Hemphill. 
  The 
  specimens 
  which 
  Carpenter 
  had 
  labelled 
  type 
  

   should 
  fall 
  in 
  the 
  category 
  to 
  which 
  Pilsbry 
  called 
  attention. 
  Five 
  of 
  those 
  specimens 
  are 
  

   figured 
  herein 
  to 
  define 
  the 
  variation, 
  if 
  an^^ 
  The 
  number 
  of 
  ribs 
  on 
  the 
  head 
  valve 
  varies 
  

   from 
  11 
  to 
  12. 
  

  

  Pilsbry's 
  original 
  description, 
  but 
  not 
  the 
  supplementary 
  notes, 
  was 
  republished 
  by 
  

   Oldroyd 
  (1927). 
  

  

  Holotype. 
  — 
  Academy 
  of 
  Natural 
  Sciences, 
  Philadelphia, 
  Pa., 
  no. 
  118687 
  

  

  Distrihutinn. 
  — 
  Todos 
  Santos 
  P>ay 
  and 
  near 
  San 
  Tomas 
  River, 
  Lower 
  California 
  (tj'pe) 
  ; 
  

   Santa 
  Barbara, 
  California, 
  to 
  San 
  Tomas 
  River, 
  Lower 
  California 
  (Dall) 
  

  

  "Callistochiton 
  fimbriatus" 
  Carpenter 
  ms. 
  noiiirn 
  nudum 
  

  

  Three 
  specimens 
  in 
  the 
  Redpath 
  Museum 
  (no. 
  41) 
  are 
  labelled 
  by 
  Carpenter, 
  "Cal- 
  

   listochiton 
  fimbriatus 
  Cpr. 
  type 
  Monterey 
  Canfield." 
  

  

  Callistochiton 
  fimbriatus 
  Carpenter 
  is 
  a 
  nomen 
  nudum. 
  The 
  name 
  has 
  been 
  frequently 
  

   mentioned 
  in 
  literature, 
  but 
  Carpenter 
  never 
  described 
  the 
  species. 
  Pilsbry 
  was 
  aware 
  of 
  the 
  

   problem 
  in 
  connection 
  with 
  the 
  name 
  and, 
  therefore, 
  did 
  not 
  use 
  the 
  Carpenter 
  name 
  but 
  

  

  139 
  The 
  first 
  species 
  mentioned 
  in 
  connection 
  with 
  the 
  generic 
  name 
  was 
  Callistochiton 
  

   decoratus 
  "Carpenter". 
  Dall 
  in 
  Orcutt 
  (1886, 
  p. 
  544). 
  However, 
  at 
  that 
  time 
  that 
  specific 
  

   name 
  was 
  a 
  nomen 
  nndmn, 
  and 
  it 
  did 
  not 
  become 
  valid 
  until 
  by 
  Pilsbry, 
  1892. 
  Therefore, 
  

   Pilsbry's 
  type 
  designation 
  has 
  priority. 
  

  

  