﻿PELECYPODA 
  63 
  

  

  Barbatia 
  pcrnoides 
  (Carpenter), 
  1864b, 
  p. 
  616; 
  Reprint, 
  1872, 
  p. 
  102 
  error 
  original 
  label; 
  

  

  Maury, 
  1922, 
  Paleont. 
  Amer., 
  vol. 
  I, 
  no. 
  4, 
  p. 
  40 
  

   Acar 
  pernoides 
  (Carpenter), 
  Stroxg, 
  1932, 
  Nautilus, 
  vol. 
  XLVI, 
  no. 
  1, 
  p. 
  28 
  in 
  part 
  

   Not 
  Barbartia 
  {Acar) 
  pernoides 
  (Carpenter), 
  Reixhart, 
  1939, 
  San 
  Diego 
  Soc. 
  Nat. 
  Hist., 
  

  

  Trans., 
  vol. 
  IX, 
  no. 
  10, 
  p. 
  42, 
  pi. 
  3. 
  fig. 
  3a, 
  3b, 
  3c, 
  3d 
  = 
  A. 
  bailyi 
  Bartsch, 
  1931, 
  U. 
  S. 
  

  

  Nat. 
  Mus.,vol.80,no.2909,p. 
  2, 
  pi. 
  1, 
  5 
  central 
  figures 
  

   Barbatia 
  ? 
  pernoides 
  (Carpenter), 
  Reinhart, 
  1943, 
  Geol. 
  Soc. 
  Amer., 
  Sp. 
  Paper 
  47, 
  p. 
  82. 
  

   Area 
  (Acar) 
  pcrnoides 
  Carpenter, 
  Burch, 
  1944, 
  no. 
  34, 
  p. 
  6, 
  in 
  part, 
  not 
  fig. 
  

   Not 
  Area 
  pernoides 
  Carpenter, 
  Burch, 
  1945, 
  no 
  45, 
  p. 
  5 
  := 
  ^. 
  bailyi 
  Bartsch; 
  Burch, 
  

  

  1947, 
  no. 
  75, 
  p. 
  6 
  

  

  "1 
  valve. 
  'Lieut. 
  Webb.'" 
  [Carpenter, 
  1857b, 
  p. 
  283] 
  

  

  "B. 
  t. 
  subquadrata, 
  planata, 
  albida, 
  epidermide 
  spongiosa 
  fusca 
  induta 
  ; 
  striis 
  exilibus, 
  

   radiantibus, 
  confertissimis 
  ; 
  minutissime 
  tuberculosis; 
  umbonibus 
  obtusis, 
  antice 
  sitis, 
  area 
  

   parva; 
  intus 
  linea 
  dentium 
  niaxinie 
  arcuata, 
  dentibus 
  extremis 
  validis. 
  interioribus 
  parvis, 
  

   confertis, 
  quadratis 
  ; 
  cicatr. 
  muse, 
  rotundatis, 
  iwlitis 
  ; 
  pagina 
  interna, 
  intra 
  lineam 
  pallii, 
  radia- 
  

   tim 
  striata 
  ; 
  margine 
  simplici 
  ; 
  ligamento 
  fossis 
  quadratis 
  minutis 
  confertis, 
  baud 
  dentibus 
  

   convenientibus, 
  sito, 
  aream 
  quoque 
  tegente. 
  

  

  "Long. 
  .68, 
  lat. 
  .53, 
  alt. 
  .32. 
  

  

  "Hab. 
  San 
  Diego 
  (Dr. 
  Webb). 
  Valv. 
  unic. 
  in 
  Mus. 
  Gould. 
  

  

  "Somewhat 
  resemlDling 
  the 
  fine 
  variety 
  of 
  B. 
  solida, 
  but 
  squarer, 
  and 
  known 
  at 
  once 
  by 
  

   the 
  teeth 
  and 
  ligament. 
  This 
  is 
  (under 
  the 
  glass) 
  in 
  minute 
  pits, 
  as 
  in 
  Isot/nomon, 
  but 
  with 
  

   an 
  extra 
  layer 
  covering 
  the 
  whole 
  area." 
  [Gould 
  and 
  Carpenter, 
  1856c, 
  p. 
  202] 
  

  

  The 
  critical 
  reference 
  in 
  regard 
  to 
  this 
  form 
  is 
  that 
  of 
  Carpenter 
  (1864b, 
  p. 
  616), 
  in 
  

   which 
  he 
  noted 
  that 
  the 
  specimen, 
  as 
  well 
  as 
  that 
  of 
  13 
  other 
  names, 
  had 
  never 
  been 
  collected 
  

   by 
  Dr. 
  Cooper 
  or 
  by 
  members 
  of 
  the 
  California 
  Survey. 
  In 
  regard 
  to 
  B. 
  pcrnoides 
  Carpenter 
  

   added 
  that 
  it 
  was 
  "ver}^ 
  probably 
  an 
  error 
  in 
  Dr. 
  Gould's 
  label." 
  In 
  a 
  letter 
  from 
  J. 
  G. 
  

   Cooper 
  to 
  Carpenter 
  dated 
  March 
  14, 
  1864^2 
  Cooper 
  included 
  a 
  list 
  of 
  molluscan 
  species 
  

   which 
  did 
  not 
  occur 
  on 
  the 
  California 
  coast. 
  "Byssoarca 
  pcrnoides" 
  was 
  one 
  of 
  them. 
  

  

  This 
  shell 
  is 
  undoubtedly 
  extraneous, 
  and 
  Carpenter 
  was 
  right 
  in 
  assigning 
  the 
  label 
  of 
  

   "San 
  Diego" 
  as 
  an 
  error. 
  

  

  There 
  is 
  a 
  right 
  valve 
  in 
  the 
  Carpenter 
  Collection 
  in 
  the 
  Redpath 
  Museum 
  which 
  has 
  the 
  

   label 
  "Barbatia 
  ? 
  pernoides 
  Cpr. 
  PZS 
  1856, 
  p. 
  202 
  ? 
  Panama." 
  

  

  The 
  shells 
  measure 
  17 
  mm. 
  length, 
  12 
  mm. 
  height, 
  and 
  5 
  mm. 
  thickness. 
  Carpenter's 
  

   measurements 
  of 
  the 
  holotype 
  would 
  be 
  17.2 
  mm. 
  length, 
  13.4 
  mm. 
  width, 
  and 
  8.3 
  mm. 
  thick- 
  

   ness. 
  ^^ 
  With 
  the 
  exception 
  of 
  the 
  thickness 
  the 
  shell 
  measures 
  practically 
  the 
  same. 
  It 
  could 
  

   well 
  be 
  the 
  shell 
  Carpenter 
  described. 
  In 
  lieu 
  of 
  any 
  authentic 
  specimen 
  this 
  individual 
  could 
  

   serve 
  as 
  a 
  neotype. 
  A 
  specimen 
  labelled 
  as 
  type 
  has 
  not 
  been 
  found. 
  The 
  above-mentioned 
  

   specimen 
  is 
  illustrated 
  herein. 
  This 
  is 
  not 
  the 
  A. 
  pernoides 
  illustrated 
  by 
  Burch 
  nor 
  speci- 
  

   mens 
  which 
  the 
  writer 
  has 
  obtained 
  from 
  collectors 
  labelled 
  "A. 
  pernoides 
  Strong." 
  Those 
  

   shells 
  are 
  much 
  smaller 
  and 
  are 
  different 
  generically. 
  They 
  are 
  the 
  Acar 
  bailyi 
  Bartsch. 
  

  

  B. 
  pcrnoides 
  belongs 
  more 
  to 
  the 
  subgenus 
  Oliquarca 
  Sacco, 
  1898, 
  by 
  the 
  arrangement 
  of 
  

   the 
  ligamental 
  area 
  than 
  it 
  does 
  to 
  Barbatia, 
  s.s. 
  (Reinhart, 
  1935, 
  p. 
  24, 
  pi. 
  II, 
  figs. 
  d,d'). 
  

  

  Holotype. 
  — 
  not 
  found 
  

  

  Specimen 
  figured. 
  — 
  Redpath 
  Museum 
  

  

  Distribution. 
  — 
  Correct 
  locality 
  unknown; 
  not 
  "San 
  Diego;" 
  ? 
  Panama 
  (Carpenter) 
  

  

  Family 
  Glycymeridae 
  

   Genus 
  Glycymeris 
  da 
  Costa, 
  1778 
  

  

  Glycymcris 
  da 
  Costa. 
  1778, 
  Historia 
  Naturalis 
  Testacerorum 
  Britanniae, 
  p. 
  168-170 
  

  

  Type 
  species 
  by 
  tautonymy. 
  Area 
  glycymcris 
  Linnaeus, 
  1758, 
  Syst. 
  Nat., 
  10th 
  ed., 
  p. 
  695 
  ; 
  

   LixxAEUES, 
  1767, 
  Syst. 
  Nat., 
  p. 
  1143, 
  no. 
  181. 
  Recent. 
  English 
  Coasts. 
  Reeve, 
  1843, 
  

   Conch. 
  Icon., 
  Pectunculus, 
  vol. 
  1, 
  pi. 
  Ill, 
  figs. 
  12a-b 
  

  

  Glycymeris 
  subobsoleta 
  (Carpenter) 
  

  

  (PI. 
  1, 
  figs. 
  8-10) 
  

  

  Axincica 
  (? 
  septentrionalis, 
  Middl. 
  var.) 
  subobsoleta 
  Carpenter, 
  1864b 
  Aug., 
  p. 
  627, 
  644; 
  

  

  ^-In 
  collection 
  of 
  Carpenteria. 
  Redpath 
  Museum, 
  McGill 
  University. 
  

  

  i^See 
  introduction 
  to 
  systematic 
  descriptions. 
  Carpenter's 
  measurements 
  would 
  be 
  multi- 
  

   plied 
  by 
  25.3 
  mm. 
  or 
  25.4 
  mm. 
  

  

  