﻿PELECYPODA 
  

  

  79 
  

  

  Puget 
  Sound 
  is 
  unquestionably 
  the 
  type 
  locality. 
  Dall 
  overlooked 
  this 
  fact 
  in 
  1921 
  al- 
  

   though 
  he 
  had 
  access 
  to 
  the 
  holotype, 
  for 
  he 
  limits 
  the 
  northern 
  range 
  of 
  the 
  species 
  to 
  

   Monterey. 
  Oldroyd, 
  in 
  spite 
  of 
  stipulating 
  Puget 
  Sound 
  as 
  the 
  type 
  locality 
  of 
  C. 
  pectinata, 
  

   did 
  not 
  include 
  the 
  species 
  in 
  her 
  monograph 
  on 
  the 
  marine 
  shells 
  of 
  Puget 
  Sound. 
  Grant 
  

   and 
  Gale 
  (1931, 
  p. 
  265) 
  stated 
  that 
  Mrs. 
  Oldroyd 
  "dredged 
  many 
  specimens 
  in 
  ten 
  to 
  twelve 
  

   fathoms 
  in 
  Puget 
  Sound." 
  

  

  The 
  specific 
  rank 
  of 
  C. 
  calif 
  oniica 
  Dall 
  (1886b, 
  p. 
  296) 
  and 
  its 
  relation 
  to 
  C. 
  pectinata 
  

   is 
  still 
  unsettled. 
  

  

  The 
  variability 
  of 
  the 
  number 
  of 
  the 
  radiating 
  ribs 
  was 
  originally 
  brought 
  out. 
  

  

  Holotype. 
  — 
  U. 
  S. 
  National 
  Museum, 
  no. 
  4506 
  

  

  Distrihntion.—Rtce.n\.. 
  Puget 
  Sound, 
  Washington 
  (type) 
  ; 
  Puget 
  Sound, 
  Washington, 
  

   British 
  Columbia, 
  to 
  Panama 
  Bay 
  (Oldroyd), 
  East 
  of 
  Cedros 
  Island, 
  45 
  fathoms 
  (Hertlein 
  

   and 
  Strong). 
  See 
  Table 
  2 
  for 
  stratigraphic 
  distribution. 
  

  

  Genus 
  Leiomya 
  A. 
  Adams, 
  1864 
  

  

  Leiomya 
  A. 
  Adams, 
  1864, 
  March, 
  Ann. 
  Mag., 
  Nat. 
  Hist., 
  ser. 
  3, 
  vol. 
  XIII, 
  p. 
  208. 
  

  

  Type 
  si>ecies 
  by 
  monotypy, 
  Leiomya 
  adnnca 
  Gould, 
  1861, 
  Boston 
  Soc. 
  Nat. 
  Hist., 
  Proc., 
  vol. 
  

   VIII, 
  p. 
  24; 
  1862, 
  Otia, 
  p. 
  162 
  as 
  Neacra. 
  Recent. 
  Kayosima 
  [Kagoshima], 
  sandy 
  mud, 
  

   12-15 
  fathoms 
  (original), 
  Tsu-Sima, 
  30 
  fathoms, 
  Seto-Uchi, 
  7 
  fathoms, 
  Hakodadi, 
  7 
  

   fathoms 
  (Adams). 
  

  

  Tadashige 
  Habe 
  (Feb. 
  25, 
  1950, 
  personal 
  communication) 
  informed 
  the 
  writer 
  that 
  

   specimens 
  of 
  this 
  species 
  have 
  not 
  been 
  rediscovered. 
  The 
  Adams 
  specimens 
  are 
  not 
  in 
  the 
  

   British 
  Museum 
  (G. 
  L. 
  Wilkins, 
  Mar. 
  14, 
  1950, 
  personal 
  communication). 
  

  

  Subgenus 
  Plectodon 
  Carpenter, 
  1864 
  

  

  Plcctodon 
  Carpenter, 
  1864, 
  Suppl. 
  Rept. 
  British 
  Assoc. 
  1863, 
  p. 
  638 
  ; 
  Reprint, 
  1872, 
  p. 
  124 
  ; 
  

  

  1866, 
  California 
  Acad. 
  Sci., 
  Proc, 
  vol. 
  Ill, 
  p. 
  207; 
  Dall, 
  1886, 
  Mus. 
  Comp. 
  ZooL, 
  vol. 
  

  

  XII, 
  p. 
  299; 
  Dall, 
  1903, 
  Wagner 
  Free 
  Inst. 
  Sci., 
  Philadelphia 
  Trans., 
  vol. 
  Ill, 
  pt. 
  VI, 
  

  

  p. 
  1504 
  

   Type 
  species 
  by 
  monotypy, 
  P. 
  scaber 
  Carpenter, 
  1866, 
  California 
  Acad. 
  Sci., 
  Proc, 
  vol. 
  Ill, 
  

  

  p. 
  207. 
  Recent 
  Catalina 
  Island 
  to 
  Lower 
  California. 
  PI. 
  6, 
  figs. 
  6-8; 
  Keen 
  and 
  Frizzell, 
  

  

  1939, 
  West 
  North 
  American 
  Pelecypod 
  Genera, 
  p. 
  12, 
  fig. 
  6 
  

  

  Leiomya 
  (Plectodon) 
  scabra 
  Carpenter 
  

   (PI. 
  6, 
  fig. 
  6-8) 
  

  

  Plectodon 
  scaber 
  Carpenter, 
  1864b, 
  p. 
  611, 
  638; 
  Reprint, 
  1872, 
  p. 
  97, 
  124; 
  1866, 
  Feb., 
  Cali- 
  

   fornia 
  Acad. 
  Sci., 
  Proc, 
  vol. 
  Ill, 
  p. 
  207; 
  Conrad, 
  1869, 
  Cat. 
  Family 
  Anatinidae, 
  Acad. 
  

   Nat. 
  Sci. 
  Philadelphia, 
  p. 
  58; 
  Cooper, 
  1867, 
  Cat. 
  Geog. 
  Moll., 
  Geol. 
  Sur. 
  California, 
  p. 
  5; 
  

   BuRCH, 
  1944, 
  no. 
  38, 
  p. 
  14; 
  Burch, 
  1945, 
  no. 
  45, 
  p. 
  10; 
  Schenck, 
  1945, 
  Jour. 
  Paleont., 
  

   vol 
  19, 
  no. 
  5, 
  p. 
  519, 
  pi. 
  67, 
  figs. 
  1-4 
  same 
  specimen 
  as 
  Keen 
  and 
  Frizzell, 
  1939, 
  p. 
  12, 
  

   fig. 
  6 
  

  

  Leiomya 
  (Plectodon) 
  scaber 
  (Carpenter), 
  Dall, 
  1921, 
  p. 
  29; 
  Oldroyd, 
  1924b, 
  p. 
  103, 
  not 
  

   pi. 
  54, 
  fig. 
  4; 
  1924, 
  Pub. 
  Puget 
  Sound 
  Biol. 
  Station, 
  vol. 
  4, 
  p. 
  34; 
  Keen, 
  1937, 
  p. 
  21; 
  

   Hertlein 
  and 
  Strong, 
  1946, 
  Zoologica, 
  New 
  York 
  Zool. 
  Soc, 
  vol. 
  31, 
  pt. 
  3, 
  p. 
  101 
  

  

  "Plectodon 
  scaber, 
  n.g. 
  and 
  n.s. 
  Cat. 
  Is. 
  ; 
  2 
  similar 
  valves, 
  40-60 
  fm." 
  [Carpenter, 
  1864h, 
  

  

  P-611] 
  

  

  "Plectodon 
  scaber, 
  n.g., 
  n.s. 
  Shape 
  of 
  Theora: 
  dorsal 
  margins 
  twisted-in 
  spirally 
  inside 
  

   umbos. 
  Lateral 
  teeth 
  laminated, 
  with 
  internal 
  cartilage 
  hidden, 
  appressed. 
  2 
  r. 
  valves, 
  40-60 
  

   fm. 
  Cp." 
  [Carpenter, 
  1864, 
  p. 
  638] 
  

  

  The 
  description 
  of 
  this 
  species 
  (Carpenter, 
  1866a) 
  was 
  copied 
  by 
  Oldroyd 
  and 
  will 
  not 
  

   be 
  repeated 
  here 
  except 
  to 
  complete 
  the 
  copy. 
  The 
  word 
  "usque" 
  should 
  be 
  included 
  between 
  

   "oblique" 
  and 
  "ad" 
  in 
  line 
  four 
  of 
  the 
  Oldroyd 
  copy. 
  

  

  Add: 
  

  

  "Hob. 
  Catalina 
  Island, 
  two 
  right 
  valves, 
  40-60 
  fms. 
  Cp. 
  

  

  "This 
  very 
  distinct 
  genus 
  has 
  the 
  aspect 
  of 
  Theora, 
  and 
  appears 
  allied 
  to 
  Neaera. 
  It 
  is 
  

   probable 
  that 
  the 
  cartilage 
  was 
  strengthened 
  by 
  an 
  ossicle. 
  The 
  great 
  peculiarity 
  is 
  the 
  

   twisting-in 
  of 
  the 
  dorsal 
  margin, 
  which 
  ascends 
  the 
  umbo 
  in 
  a 
  very 
  loose 
  spiral." 
  [Carpenter, 
  

   1866a, 
  p. 
  207, 
  208] 
  

  

  