﻿108 
  MARINE 
  MOLLUSCA 
  DESCRIBED 
  BY 
  P. 
  P. 
  CARPENTER 
  

  

  Type 
  species 
  by 
  monotypy 
  Maconia 
  tcncra 
  Leach 
  in 
  Ross, 
  1819, 
  \'oyage 
  H.M.S. 
  Isabella 
  

   Discovery 
  Baffin's 
  Bay, 
  1st 
  ed., 
  app. 
  II, 
  p. 
  LXII 
  = 
  Tellina 
  caJcarea 
  Gmelin, 
  1791, 
  Syst. 
  

   Nat., 
  13 
  ed., 
  pt. 
  VI, 
  p. 
  3236. 
  Recent. 
  Arctic 
  to 
  Japan 
  and 
  Alaska, 
  Pacific 
  Ocean; 
  Long 
  

   Island 
  Sound, 
  Atlantic 
  Ocean. 
  Oldroyd, 
  1924, 
  pi. 
  42, 
  fig. 
  5. 
  For 
  svnonymy, 
  see 
  Grant 
  and 
  

   Gale, 
  1931, 
  p. 
  369 
  

  

  Distribution 
  of 
  gcmus. 
  — 
  Eocene 
  — 
  Recent: 
  Eocene 
  — 
  Recent, 
  Western 
  Hemisphere; 
  Miocene 
  

   — 
  Recent, 
  Europe 
  

  

  Macoma 
  expansa 
  Carpenter 
  

  

  (PI. 
  13, 
  figs. 
  1-3) 
  

   Macoma 
  ? 
  var. 
  expansa 
  Carpenter, 
  1864b, 
  p. 
  602, 
  639; 
  Reprint, 
  1872, 
  p. 
  88, 
  125; 
  1865, 
  Acad. 
  

  

  Nat. 
  Sci. 
  Philadelphia, 
  Proc, 
  vol. 
  17, 
  p. 
  56; 
  Cooper, 
  1867, 
  Geog. 
  Cat. 
  Moll., 
  Geol. 
  Sur. 
  

  

  California, 
  p. 
  5 
  

   Macoma 
  expansa 
  Carpenter, 
  Tryon, 
  1869, 
  Cat. 
  Tellinidae, 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  p. 
  

  

  101; 
  Dall, 
  1900, 
  U. 
  S. 
  Nat. 
  Mus., 
  Proc, 
  vol. 
  2i, 
  no. 
  1210, 
  p. 
  308; 
  1900, 
  Wagner 
  Free 
  

  

  Inst. 
  Sci. 
  Philadelphia, 
  Trans., 
  vol. 
  Ill, 
  pt. 
  V, 
  p. 
  1052; 
  1921, 
  p. 
  48; 
  Oldroyd, 
  1924b, 
  p. 
  

  

  176; 
  Keen, 
  1937, 
  p. 
  22; 
  Burch, 
  1943, 
  no. 
  25, 
  p. 
  21 
  ; 
  1945, 
  no. 
  43, 
  p. 
  15; 
  1945, 
  no. 
  45, 
  p. 
  17 
  

  

  "Macoma 
  (? 
  v.) 
  expansa. 
  Adult 
  broken; 
  young 
  living. 
  Belongs 
  to 
  a 
  group 
  of 
  forms 
  

   classed 
  together 
  by 
  some 
  writers 
  under 
  lata 
  or 
  proxima, 
  but 
  the 
  characters 
  of 
  the 
  hinge 
  and 
  

   mantle-bend 
  have 
  not 
  yet 
  been 
  sufficiently 
  studied." 
  [Carpenter, 
  1864b, 
  p. 
  602] 
  

  

  "Macoma 
  ? 
  var. 
  expansa 
  Scars 
  like 
  lata 
  and 
  calcarea 
  in 
  Mus. 
  Cum., 
  but 
  teeth 
  not 
  bifid, 
  

   very 
  thin, 
  glossy. 
  Scarcely 
  diff"ers 
  from 
  lata, 
  Desh. 
  in 
  B. 
  M. 
  Greenland." 
  [Carpenter, 
  1864b, 
  

   p. 
  639] 
  

  

  The 
  description 
  of 
  1865 
  was 
  republished 
  by 
  Oldroyd 
  (1924, 
  p. 
  177). 
  To 
  the 
  portion 
  re- 
  

   printed 
  should 
  be 
  added 
  the 
  remaining 
  part 
  of 
  Carpenter's 
  description 
  as 
  follows: 
  

  

  "Hah. 
  — 
  In 
  sinu 
  Pugetiano 
  raissime 
  legit 
  Kennerley. 
  

  

  "A. 
  'M. 
  lata, 
  Gmel.' 
  Desh. 
  MS. 
  in 
  Mus. 
  Brit, 
  vix 
  differt, 
  specimine 
  Groenlandico 
  ; 
  sed 
  M. 
  

   latae 
  et 
  calcarae 
  in 
  Mus. 
  Cumingiano 
  textura 
  et 
  dentibus 
  baud 
  convenit. 
  Species 
  quaedam 
  hu- 
  

   jusce 
  formae, 
  extus 
  similiores, 
  intus 
  dentibus 
  et 
  sinu 
  pallii 
  satis 
  differunt." 
  [Carpenter, 
  1865e, 
  

   p. 
  56] 
  

  

  Dall 
  (1900, 
  p. 
  308) 
  regarded 
  the 
  type 
  material 
  mixed 
  as 
  to 
  specific 
  identity. 
  The 
  species 
  

   has 
  been 
  doubted 
  by 
  authors 
  since 
  Dall. 
  

  

  The 
  specimens, 
  two 
  diff'erent 
  valves, 
  marked 
  types 
  in 
  the 
  U. 
  S. 
  National 
  Museum, 
  bear 
  the 
  

   label 
  "Types. 
  Dr. 
  Kennerly. 
  Puget 
  Sound." 
  This 
  label 
  coincides 
  with 
  Carpenter's 
  original 
  

   statement 
  as 
  to 
  locality 
  (1864b, 
  p. 
  602, 
  639). 
  

  

  If 
  Dall 
  doubted 
  what 
  the 
  characters 
  of 
  the 
  species 
  were, 
  it 
  does 
  not 
  seem 
  logical 
  to 
  main- 
  

   tain, 
  until 
  the 
  identity 
  of 
  the 
  species 
  is 
  known, 
  the 
  extent 
  of 
  distribution 
  as 
  given 
  by 
  Dall. 
  

   Arnold 
  (1903, 
  p. 
  161) 
  furnished 
  the 
  information 
  that 
  specimens 
  in 
  the 
  State 
  Collection 
  at 
  the 
  

   University 
  of 
  California 
  labelled 
  "ilf 
  . 
  expansa" 
  were 
  M. 
  calcarea 
  Gmelin. 
  

  

  Burch 
  (1943, 
  p. 
  21) 
  stated 
  that 
  the 
  species 
  is 
  "unknown 
  to 
  any 
  member 
  of 
  the 
  Concho- 
  

   logical 
  Club 
  of 
  Southern 
  California." 
  Considering 
  that 
  the 
  type 
  has 
  never 
  been 
  figured 
  and 
  

   only 
  general 
  information 
  is 
  available 
  concerning 
  the 
  shell, 
  it 
  is 
  not 
  surprising 
  that 
  the 
  form 
  

   is 
  not 
  known. 
  

  

  The 
  hinge 
  and 
  unbonal 
  area 
  of 
  the 
  smaller 
  specimen, 
  a 
  left 
  valve, 
  are 
  broken. 
  The 
  right 
  

   valve 
  is 
  figured 
  herein. 
  

  

  Type. 
  — 
  U. 
  S. 
  National 
  Museum, 
  no. 
  3910, 
  two 
  valves 
  

  

  Distribution. 
  — 
  Puget 
  Sound, 
  Washington 
  (Kennerley, 
  type) 
  

  

  Macoma 
  yoldiformis 
  Carpenter 
  

   (PI. 
  14, 
  figs. 
  2-4) 
  

   Macoma 
  yoldiformis 
  Carpenter, 
  1864b, 
  p. 
  602, 
  611, 
  639; 
  Reprint, 
  1872, 
  p. 
  88, 
  97, 
  125; 
  1865, 
  

   Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  Proc, 
  vol. 
  17, 
  p. 
  55; 
  Cooper, 
  1867, 
  Geog. 
  Cat. 
  Moll., 
  Geol. 
  

   Sur. 
  California, 
  p. 
  5; 
  Tryon, 
  1869, 
  Cat. 
  Tellinidae, 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  p. 
  104; 
  

   Dall, 
  1900, 
  U. 
  S. 
  Nat. 
  Mus., 
  Proc, 
  vol. 
  23, 
  no. 
  1210, 
  p. 
  309; 
  Arnold, 
  1903, 
  p. 
  165, 
  pi. 
  

   XVI, 
  fig. 
  6; 
  Packard, 
  1918, 
  Univ. 
  California, 
  Pub. 
  Zoology, 
  vol. 
  14, 
  p. 
  280, 
  pi. 
  25, 
  fig. 
  6; 
  

   Dall, 
  1921, 
  p. 
  48; 
  Oldroyd, 
  1924, 
  Pub. 
  Puget 
  Sound 
  Biol. 
  Station, 
  vol. 
  4, 
  p. 
  54, 
  pi. 
  41, 
  

   fig. 
  6 
  same 
  as 
  Packard, 
  1918, 
  pi. 
  25, 
  fig. 
  6; 
  Oldroyd, 
  1924b, 
  p. 
  177, 
  pi. 
  44, 
  fig. 
  6 
  same 
  as 
  

   Packard, 
  1918, 
  pi. 
  25, 
  fig. 
  6; 
  Grant 
  and 
  Gale, 
  1931, 
  p. 
  373; 
  Keen, 
  1937, 
  p. 
  22; 
  Burch, 
  

   1943, 
  no. 
  25, 
  p. 
  22, 
  fig.; 
  1945, 
  no. 
  43, 
  p. 
  15; 
  1945, 
  no. 
  45, 
  p. 
  17; 
  no. 
  46, 
  back 
  page 
  

  

  