﻿PELF.CYPOnA 
  

  

  115 
  

  

  "Solen 
  ? 
  var 
  rosaceus. 
  Straight, 
  narrower, 
  longer, 
  smaller, 
  glossy, 
  rosy." 
  [Carpenter, 
  

   1864b. 
  p. 
  638] 
  

  

  "S. 
  testa 
  S. 
  sicario 
  simili, 
  sed 
  minore 
  ; 
  multo 
  augustiore, 
  elongata, 
  recta, 
  extus 
  et 
  intus 
  

   rosacea 
  ; 
  epidermide 
  tenui, 
  valde 
  nitente. 
  Long. 
  .27, 
  lat. 
  .5, 
  alt. 
  .2)2 
  poll. 
  

  

  "Hab. 
  Sta. 
  Barbara 
  (Jezvett) 
  ; 
  S. 
  Pedro 
  (Cooper)." 
  [Carpenter 
  1865h, 
  p. 
  177] 
  

  

  The 
  type 
  of 
  this 
  species 
  has 
  not 
  been 
  found. 
  It 
  was 
  never 
  figured, 
  and 
  Weymouth 
  (1920) 
  

   and 
  Finch 
  (1953) 
  seem 
  to 
  be 
  the 
  only 
  ones 
  who 
  have 
  presented 
  a 
  figure 
  of 
  the 
  species. 
  The 
  

   type 
  is 
  not 
  in 
  the 
  British 
  Museum 
  (Natural 
  History) 
  (G. 
  L. 
  Wilkins, 
  May 
  22, 
  1950, 
  per- 
  

   sonal 
  communication) 
  as 
  stated 
  by 
  Oldroyd. 
  

  

  Tlirough 
  the 
  kindness 
  of 
  William 
  K. 
  Emerson 
  of 
  the 
  Museum 
  of 
  Paleontology 
  at 
  the 
  

   University 
  of 
  California, 
  a 
  specimen 
  of 
  Solen 
  rosaceus 
  loc. 
  "no. 
  42" 
  from 
  their 
  early 
  col- 
  

   lections 
  was 
  examined 
  and 
  photographed. 
  This 
  specimen 
  was 
  a 
  fossil 
  embedded 
  in 
  fine 
  

   hardened 
  sand 
  probably 
  lower 
  Pleistocene. 
  The 
  original 
  description 
  described 
  the 
  species 
  

   as 
  "glossy, 
  rosy" 
  and 
  "epidermide 
  tenui" 
  ; 
  therefore, 
  the 
  types 
  would 
  have 
  to 
  have 
  been 
  Re- 
  

   cent 
  shells. 
  Because 
  the 
  specimen 
  which 
  was 
  photographed 
  by 
  Emerson 
  could 
  not 
  be 
  a 
  type, 
  

   the 
  illustration 
  is 
  not 
  included 
  herein. 
  

  

  Types. 
  — 
  Not 
  found 
  

  

  Distribution. 
  — 
  Recent. 
  Santa 
  Barbara 
  or 
  San 
  Pedro, 
  California 
  (type) 
  ; 
  Humboldt 
  Bay, 
  

   California, 
  to 
  Mazatlan, 
  Gulf 
  of 
  California 
  (Finch). 
  Pleistocene. 
  Pliocene. 
  Miocene. 
  (See 
  

   Grant 
  and 
  Gale, 
  1931.) 
  

  

  Family 
  Mactridae 
  

   Genus 
  Darina 
  Gray, 
  1853 
  

  

  Darina 
  Gray, 
  1853, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  ser. 
  2, 
  vol. 
  11, 
  p. 
  42 
  

  

  Type 
  species 
  by 
  monotypy 
  D. 
  solcnoides 
  [King], 
  1831, 
  Zool. 
  Jour., 
  vol. 
  V, 
  p. 
  335 
  as 
  Erycina. 
  

   Recent. 
  Straits 
  of 
  Magellan. 
  Gray, 
  Griffith 
  and 
  Pidgeon 
  (Cuvier), 
  1834, 
  Animal 
  

   Kingdom, 
  pi. 
  22, 
  fig. 
  1 
  as 
  Mesodesma; 
  H. 
  and 
  A. 
  Adams, 
  1858, 
  Gen. 
  Rec. 
  Moll., 
  HI, 
  pi. 
  

   CI, 
  fig. 
  2, 
  2a; 
  Lamy, 
  1914, 
  Jour, 
  de 
  Conchyl., 
  vol. 
  LXII, 
  p. 
  28, 
  29, 
  fig. 
  of 
  hinge 
  

  

  Darina 
  declivis 
  Carpenter 
  

   (Pl. 
  14. 
  figs. 
  1, 
  lA) 
  

   Darina 
  dccliins 
  Carpenter, 
  1864b, 
  p. 
  607, 
  637; 
  Reprint, 
  1872, 
  p. 
  93, 
  123; 
  1865, 
  Feb. 
  14, 
  Zool. 
  

   Soc. 
  London, 
  Proc. 
  1865, 
  p. 
  203; 
  Reprint, 
  1872, 
  p. 
  251; 
  Cooper, 
  1867, 
  Geog. 
  Cat. 
  Moll., 
  

   Geol. 
  Sur. 
  California, 
  p. 
  4; 
  Ball, 
  1894, 
  Nautilus, 
  vol. 
  8, 
  no. 
  4, 
  p. 
  42, 
  43; 
  1898, 
  Wagner 
  

   Free 
  Inst. 
  Sci.. 
  Philadelphia, 
  Trans., 
  vol. 
  Ill, 
  pt. 
  IV, 
  p. 
  890; 
  1902, 
  U. 
  S. 
  Nat. 
  Mus., 
  Proc, 
  

   vol. 
  26, 
  no. 
  1312, 
  p. 
  408 
  

  

  "D. 
  t. 
  tenuissima, 
  planata, 
  elliptica, 
  Machaeraeformi, 
  utroque 
  latere 
  hiante 
  ; 
  cinerea, 
  epi- 
  

   dermide 
  fortiore 
  induta 
  ; 
  marginibus 
  regulariter 
  excurvatis 
  ; 
  umbonibus 
  baud 
  conspicuis, 
  ad 
  

   duas 
  inter 
  quinque 
  partes 
  longtiudinis 
  postice 
  sitis 
  : 
  intus 
  cartilagine 
  spathula 
  elongata, 
  dorsum 
  

   versus 
  utraque 
  valva 
  decliviter 
  sita, 
  a 
  ligamento 
  lamina 
  extante 
  tenuissima 
  separata 
  ; 
  dente 
  

   cardinali 
  laminato, 
  extante, 
  curtiore 
  ; 
  lateralibus 
  vix 
  conspicuis 
  ; 
  sinu 
  pallii 
  ovali, 
  fere 
  ad 
  

   medium 
  porrecto. 
  

  

  "Long. 
  1.77, 
  lat. 
  .85, 
  alt. 
  .34 
  poll. 
  

  

  "Hab. 
  Vancouver's 
  Island 
  (Forbes). 
  

  

  "The 
  only 
  other 
  species 
  of 
  Darina 
  known 
  is 
  from 
  the 
  Straits 
  of 
  Maghellan 
  [sic]. 
  The 
  

   northern 
  shell 
  may 
  have 
  been 
  passed 
  over 
  as 
  the 
  young 
  of 
  Machacra 
  patula, 
  to 
  which 
  it 
  bears 
  

   a 
  strong 
  external 
  resemblance." 
  [Carpenter, 
  1865a, 
  p. 
  203] 
  

  

  The 
  holotype 
  of 
  this 
  species 
  consists 
  of 
  one 
  double 
  specimen 
  in 
  the 
  Redpath 
  Aluseum 
  at 
  

   McGill 
  University. 
  The 
  specimen 
  is 
  mounted 
  on 
  an 
  original 
  Carpenter 
  glass 
  mount 
  with 
  a 
  

   Carpenter 
  label 
  of 
  "(unique 
  type) 
  Vancouver 
  Dr. 
  Forbes." 
  

  

  There 
  is 
  no 
  doubt 
  of 
  the 
  authenticity 
  of 
  the 
  holotype, 
  but 
  there 
  is 
  uncertainty 
  as 
  to 
  the 
  

   proper 
  locality 
  of 
  the 
  shell. 
  

  

  Carpenter 
  brought 
  out 
  the 
  fact 
  of 
  the 
  unique 
  distribution 
  of 
  the 
  species 
  but 
  did 
  not 
  ques- 
  

   tion 
  that 
  the 
  shell 
  came 
  from 
  Vancouver. 
  The 
  species 
  has 
  not 
  been 
  reported 
  from 
  the 
  North- 
  

   west 
  since 
  the 
  original 
  citation, 
  and 
  Dall 
  doubted 
  the 
  correctness 
  of 
  the 
  original 
  label. 
  Now 
  

   that 
  the 
  shell 
  is 
  illustrated 
  perhaps 
  collectors 
  may 
  note 
  its 
  proper 
  locale. 
  

  

  Holotype. 
  — 
  Redpath 
  Museum, 
  no. 
  101 
  

  

  Distribution. 
  — 
  "Vancouver 
  Isl.," 
  British 
  Columbia 
  (type) 
  

  

  