﻿70 
  MARINE 
  MOLLUSCA 
  DESCRTRF.D 
  BY 
  P. 
  P. 
  CARPENTER 
  

  

  "Pecten 
  (? 
  var.) 
  H'mdsn. 
  Broader, 
  ribs 
  close, 
  small, 
  smooth, 
  bifurcating. 
  Passes 
  from 
  

   hastatus 
  toward 
  Islandicus." 
  [Carpenter, 
  1864b, 
  p. 
  645] 
  

  

  Pec 
  ten 
  rubidus 
  Hinds, 
  1844, 
  was 
  described 
  from 
  a 
  specimen 
  from 
  Alaska 
  (no 
  definite 
  

   place). 
  This 
  is 
  not 
  the 
  P. 
  rubidus 
  Martyn 
  (1784) 
  Dall 
  (1905, 
  p. 
  415; 
  Griffen, 
  Sherborn, 
  and 
  

   Marshall, 
  1936, 
  p. 
  30; 
  WinckAvorth, 
  1929, 
  p. 
  228) 
  = 
  P. 
  islandicus 
  Miiller, 
  1776. 
  Although 
  

   Hinds 
  (1844) 
  and 
  Reeve 
  (1853) 
  figured 
  the 
  species 
  their 
  illustrations 
  do 
  not 
  reveal 
  the 
  fine 
  

   details 
  of 
  sculpture. 
  

  

  Dall 
  (1898) 
  renamed 
  P. 
  rubidus 
  Hinds 
  because 
  of 
  the 
  use 
  of 
  the 
  name 
  by 
  Martyn 
  (1784). 
  

   Dall 
  gave 
  the 
  new 
  name 
  navarchus 
  to 
  the 
  species 
  and 
  designated 
  it 
  as 
  a 
  subspecies 
  of 
  P. 
  Iieri- 
  

   ceus 
  Gould 
  (1850). 
  Martyn's 
  name 
  is 
  eliminatedi^ 
  because 
  his 
  work 
  (1784) 
  is 
  nomenclator- 
  

   rially 
  inadequate. 
  Hind's 
  name 
  is 
  available 
  and 
  stands 
  for 
  the 
  species. 
  Dall's 
  name 
  of 
  naz'or- 
  

   chus 
  is 
  unnecessary 
  and 
  falls 
  in 
  synonymy 
  with 
  P. 
  rubidus 
  Hinds. 
  Chenu's 
  republication 
  in 
  

   1845 
  of 
  Alartyn 
  docs 
  not 
  validate 
  the 
  name 
  of 
  P. 
  rubidus 
  iMartyn, 
  Chenu, 
  over 
  P. 
  rubidus 
  

   Hinds, 
  because 
  it 
  was 
  a 
  year 
  later 
  than 
  that 
  of 
  Hinds. 
  

  

  Pecten 
  Hindsii 
  was 
  the 
  name 
  given 
  by 
  Carpenter 
  to 
  the 
  specimen 
  identified 
  by 
  Dr. 
  \Vm. 
  

   Baird 
  as 
  P. 
  rubidus 
  Hinds. 
  The 
  shell 
  was 
  from 
  Vancouver. 
  It 
  had 
  been 
  collected 
  by 
  Dr. 
  

   Lyall 
  of 
  H. 
  M. 
  Ship 
  "Plumper" 
  and 
  had 
  been 
  deposited 
  in 
  the 
  British 
  Museum 
  (Vancouver 
  

   and 
  Californian 
  Table, 
  sixth 
  column, 
  no. 
  28, 
  fide 
  Carpenter, 
  1864b, 
  p. 
  604-606). 
  The 
  Lyall 
  

   specimen 
  Carpenter 
  thought 
  was 
  not 
  the 
  same 
  as 
  P. 
  rubidus 
  Hinds. 
  It 
  is 
  the 
  Lyall 
  specimen 
  

   which 
  would 
  be 
  the 
  type 
  of 
  P. 
  Hindsii 
  Carpenter. 
  Apparently 
  that 
  shell 
  has 
  been 
  lost,-° 
  for 
  

   it 
  is 
  not 
  in 
  the 
  British 
  Museum 
  (Natural 
  History) 
  now. 
  But 
  P. 
  hindsii 
  Carpenter 
  is 
  now 
  

   regarded 
  as 
  synonymous 
  with 
  P. 
  mwarchus 
  Dall 
  = 
  P. 
  rubidus 
  (Burch, 
  1944, 
  no. 
  35, 
  p. 
  6) 
  

   Hinds, 
  so 
  that 
  the 
  type 
  of 
  the 
  former 
  would 
  become 
  the 
  type 
  of 
  the 
  species. 
  The 
  type 
  of 
  

   P. 
  rubidus 
  Hinds 
  has 
  also 
  been 
  lost. 
  Hind's 
  shell 
  came 
  from 
  Alaska 
  (33 
  fathoms), 
  which 
  

   limits 
  the 
  type 
  locality 
  to 
  the 
  Alaskan 
  area. 
  

  

  There 
  are 
  in 
  the 
  Carpenter 
  Collection 
  in 
  the 
  Redpath 
  Museum 
  3 
  specimens 
  labelled 
  by 
  

   Carpenter, 
  "Pecten 
  Hindsii 
  Cpr. 
  ^ 
  rubidus, 
  H. 
  C. 
  Sitka" 
  and 
  6 
  specimens 
  labelled 
  by 
  Car- 
  

   penter, 
  "Pecten 
  (? 
  var.) 
  Hindsii 
  Cpr. 
  = 
  rubidus 
  var. 
  H. 
  Cum. 
  not 
  Hinds. 
  Neeah 
  Bay. 
  Swan." 
  

  

  The 
  3 
  Redpath 
  Museum 
  specimens 
  from 
  Sitka, 
  Alaska, 
  measure 
  respectively, 
  19 
  mm., 
  

   29 
  mm., 
  15 
  mm., 
  width; 
  22 
  mm., 
  32 
  mm., 
  18 
  mm., 
  height; 
  3 
  mm., 
  5 
  mm., 
  3 
  mm., 
  thickness. 
  

   Photographs 
  of 
  the 
  3 
  specimens 
  are 
  included 
  herein. 
  

  

  In 
  1865 
  Carpenter 
  included 
  under 
  P. 
  Hindsii 
  specimens 
  collected 
  by 
  Kennerley 
  from 
  

   Puget 
  Sound 
  and 
  Vancouver 
  shells 
  of 
  Lord. 
  

  

  The 
  above 
  is 
  not 
  intended 
  to 
  be 
  a 
  discussion 
  of 
  Pecten 
  rubidus 
  Hinds, 
  1844, 
  but 
  only 
  tlie 
  

   history 
  of 
  the 
  shells 
  which 
  Carpenter 
  named 
  which 
  might 
  be 
  identified 
  with 
  Hind's 
  species. 
  

  

  Types. 
  — 
  Unknown. 
  In 
  Carpenter's 
  day 
  (1863) 
  they 
  were 
  in 
  the 
  British 
  Museum 
  (Car- 
  

   penter, 
  1864b, 
  p. 
  605, 
  606) 
  

  

  Distribution. 
  — 
  Alaska 
  (type) 
  ; 
  Bering 
  Sea 
  to 
  San 
  Diego, 
  California 
  (Burch) 
  

  

  Subgenus 
  Plagioctenium 
  Dall, 
  1898 
  

  

  Plaqioctenium 
  Dall, 
  1898, 
  Wagner 
  Free 
  Inst. 
  Sci. 
  Piiiladelphia, 
  Trans., 
  vol. 
  Ill, 
  pt. 
  IV, 
  p. 
  

  

  696 
  

   Type 
  species 
  by 
  original 
  designation 
  Pecten 
  ventricosus 
  Sowerdy,^! 
  1842 
  (1847), 
  Thes. 
  

  

  Conch., 
  vol. 
  1, 
  p. 
  51, 
  pi. 
  12, 
  figs. 
  18, 
  19, 
  26. 
  Recent. 
  West 
  Coast 
  Mexico 
  and 
  Central 
  

  

  America 
  

  

  i^Opinion 
  456, 
  opinions 
  and 
  declarations 
  rendered 
  by 
  the 
  Int. 
  Com. 
  Zool. 
  Nomen., 
  1957. 
  

  

  20L. 
  R. 
  Cox 
  (fide 
  litt.), 
  W. 
  J. 
  Rees, 
  and 
  J. 
  R. 
  le 
  B. 
  Tomlin 
  searched 
  in 
  the 
  British 
  Mu- 
  

   seum 
  (Natural 
  Plistory) 
  for 
  the 
  type 
  of 
  the 
  Pectens 
  in 
  question. 
  For 
  Hinds 
  shell 
  of 
  the 
  

   Belcher 
  collection 
  see 
  Tomlin, 
  (1941, 
  p. 
  158). 
  Grant 
  and 
  Gale's 
  (1931) 
  statement 
  that 
  botli 
  

   P. 
  hindsii 
  and 
  P. 
  navarchus 
  ^ 
  P. 
  rubidus 
  Plinds 
  were 
  based 
  on 
  the 
  same 
  specimen 
  is 
  not 
  

   correct. 
  

  

  2iRegarded 
  as 
  not 
  separable 
  from 
  P. 
  circularis 
  Sowerby 
  (1835, 
  p. 
  110) 
  by 
  Arnold 
  (1906, 
  

   p. 
  125), 
  Hertlein 
  (1935, 
  p. 
  313), 
  and 
  M. 
  Smith 
  (1944, 
  p. 
  52). 
  

  

  