﻿110 
  MARINE 
  MOLLUSCA 
  DESCRIBED 
  15V 
  1'. 
  I'. 
  CARPENTER 
  

  

  "Dififers 
  from 
  M. 
  unibonclla, 
  Lam., 
  in 
  its 
  sccta-Wkc 
  postligamcntal 
  wing. 
  This 
  being 
  rubbed 
  

   off 
  in 
  the 
  large 
  dead 
  valves, 
  the 
  shell 
  has 
  the 
  aspect 
  of 
  a 
  very 
  distinct 
  species." 
  [Carpenter, 
  

   1866, 
  p. 
  208] 
  

  

  The 
  holotype 
  consists 
  of 
  a 
  right 
  valve 
  collected 
  in 
  a 
  dead 
  but 
  well-preserved 
  condition. 
  The 
  

   specimen 
  is 
  labelled 
  "Cotype 
  San 
  Pedro, 
  Cooper." 
  The 
  shell 
  and 
  label 
  may 
  thus 
  be 
  identified 
  

   as 
  that 
  of 
  Carpenter's 
  description 
  of 
  1865. 
  There 
  is 
  only 
  the 
  one 
  specimen 
  at 
  present. 
  

  

  Dall 
  described 
  the 
  "variety" 
  tenuirostris 
  of 
  this 
  species 
  (1900, 
  p. 
  309, 
  324). 
  On 
  the 
  back 
  

   of 
  the 
  label 
  of 
  the 
  type 
  of 
  M. 
  indentata 
  is 
  written 
  "var. 
  tenuirostris 
  Dall." 
  Dall 
  (1900, 
  p. 
  324) 
  

   stated, 
  "For 
  the 
  rostrate 
  form, 
  pending 
  the 
  acquisition 
  of 
  more 
  and 
  fresh 
  material, 
  I 
  would 
  

   propose 
  the 
  varietal 
  name 
  of 
  tenuirostris. 
  It 
  measures 
  long. 
  55, 
  alt. 
  2>2i, 
  and 
  diam. 
  16 
  mm." 
  

   Those 
  dimensions 
  are 
  the 
  same 
  (approximately 
  of 
  height 
  and 
  diameter) 
  of 
  the 
  specimen 
  no. 
  

   15229, 
  which 
  is 
  the 
  type 
  of 
  M. 
  indentata, 
  as 
  indicated 
  in 
  the 
  U. 
  S. 
  National 
  Museum 
  collec- 
  

   tions. 
  The 
  other 
  specimens 
  which 
  Carpenter 
  mentioned 
  are 
  not 
  now 
  available 
  so 
  that 
  the 
  

   specimen 
  which 
  Dall 
  thought 
  differed 
  varietally 
  from 
  the 
  typical 
  is 
  the 
  lone 
  type 
  of 
  the 
  spe- 
  

   cies. 
  Willett 
  {in 
  Burch, 
  1945, 
  no. 
  43, 
  p. 
  16) 
  doubted 
  the 
  validity 
  of 
  Dall's 
  subspecies. 
  

  

  Specimens 
  in 
  some 
  collections 
  labelled 
  this 
  species 
  are 
  higher 
  and 
  more 
  rounded 
  anteriorly 
  

   than 
  the 
  holotype. 
  This 
  may 
  be 
  the 
  difference 
  which 
  Dall 
  accounted 
  for. 
  

  

  Holotype.— 
  \J. 
  S. 
  National 
  Museum, 
  no. 
  15229 
  

  

  Distribution. 
  — 
  Recent. 
  San 
  Pedro. 
  California 
  (type) 
  ; 
  Puget 
  Sound, 
  Wasliington, 
  to 
  

   Lower 
  California 
  (Dall). 
  Pleistocene, 
  Pliocene, 
  Miocene. 
  (See 
  Grant 
  and 
  Gale, 
  1931, 
  p. 
  374, 
  

   375.) 
  

  

  Etherington 
  (1931. 
  p. 
  85, 
  pi. 
  10, 
  figs. 
  3, 
  4) 
  described 
  a 
  subspecies 
  of 
  this 
  species 
  from 
  the 
  

   Astoria 
  formation, 
  middle 
  Miocene, 
  of 
  western 
  Washington. 
  

  

  Family 
  Semelidae 
  

  

  Genus 
  Semele 
  Schumacher, 
  1817 
  

  

  Semele 
  Schumacher, 
  1817, 
  Essais 
  Nouv. 
  Syst., 
  p. 
  165 
  

  

  Type 
  species 
  by 
  original 
  designation, 
  TcUiua 
  reticulata 
  Spengi.ek'''^ 
  = 
  T. 
  proficua 
  Pultenev, 
  

  

  1799, 
  Hutchins 
  Hist. 
  Dorsetshire, 
  p. 
  29, 
  pi. 
  V, 
  fig. 
  4. 
  Recent. 
  Eastern 
  United 
  States, 
  

  

  Virginia 
  to 
  West 
  Indies. 
  L. 
  Perry, 
  1940, 
  Bull. 
  Amer. 
  Paleont., 
  vol. 
  26, 
  no. 
  95, 
  pi. 
  16. 
  

  

  fig. 
  103 
  ; 
  L. 
  Perry 
  and 
  Schwengel, 
  1955, 
  Marine 
  Shells 
  of 
  Western 
  Coast 
  of 
  Florida, 
  

  

  pi. 
  16, 
  fig. 
  103, 
  same 
  figure 
  as 
  in 
  Perry 
  

  

  Semele 
  incongrua 
  Carpenter 
  

  

  (PI. 
  14, 
  figs. 
  7-10) 
  

  

  Semele 
  incongrua 
  Carpenter, 
  1864b, 
  p. 
  611, 
  640; 
  Reprint, 
  1872. 
  p. 
  97, 
  126; 
  1866 
  [date 
  from 
  

   page], 
  Feb., 
  California 
  Acad. 
  Sci., 
  Proc, 
  vol. 
  III. 
  p. 
  208; 
  Cooper, 
  1867, 
  Geog. 
  Cat. 
  Moll., 
  

   Geol. 
  Sur. 
  California, 
  p. 
  6; 
  Tryon, 
  1869, 
  Cat. 
  Tellinidae, 
  Acad. 
  Nat. 
  Sci.. 
  Philadelphia, 
  

   p. 
  120; 
  Dall, 
  1915. 
  Acad, 
  Nat. 
  Sci. 
  Philadelphia, 
  Proc, 
  vol. 
  67, 
  p. 
  27; 
  1921, 
  p. 
  49 
  

   OLnROYi), 
  1924, 
  p. 
  181, 
  pi. 
  11, 
  figs. 
  12. 
  13; 
  Grant 
  and 
  Gale, 
  1931, 
  p. 
  377; 
  Keen. 
  1937, 
  

   p. 
  25; 
  Burch, 
  1945, 
  no. 
  43, 
  p. 
  18; 
  1945, 
  no. 
  45, 
  p. 
  17; 
  Hertlein 
  and 
  Strong, 
  1949, 
  Zoo- 
  

   logica, 
  New 
  York 
  Zool. 
  Soc, 
  vol. 
  34, 
  pt. 
  4, 
  p. 
  248 
  

  

  "Semele 
  incongrua, 
  n.s. 
  Catalina 
  Is., 
  40-60 
  fm. 
  ; 
  common." 
  [Carpenter, 
  1864b, 
  p. 
  611] 
  

   "Semele 
  incongrua, 
  n.s. 
  Like 
  pulchra, 
  with 
  concentric 
  sculpture 
  differing 
  in 
  r. 
  and 
  1. 
  

   valves: 
  fine 
  radiating 
  striae 
  all 
  over. 
  40-60 
  fm. 
  c. 
  Cp." 
  [Carpenter, 
  1864b, 
  p. 
  640] 
  

  

  A 
  copy 
  of 
  the 
  original 
  description 
  is 
  given 
  in 
  Oldroyd. 
  To 
  complete 
  the 
  copy 
  the 
  follow- 
  

   ing 
  should 
  be 
  added 
  : 
  

  

  "Hah. 
  Santa 
  Barbara. 
  16 
  fm. 
  1 
  valve; 
  Catalina 
  Island, 
  40-60 
  fm., 
  not 
  uncommon; 
  Cooper." 
  

   [Carpenter, 
  1866, 
  p. 
  208] 
  

  

  Line 
  3, 
  correct 
  "raditim" 
  to 
  read 
  "radiatim." 
  

  

  Oldroyd, 
  followed 
  by 
  Grant 
  and 
  Gale, 
  gave 
  the 
  type 
  as 
  in 
  the 
  California 
  State 
  Collection, 
  

   no. 
  1061. 
  Such 
  information 
  is 
  merely 
  the 
  original 
  number 
  as 
  stated 
  by 
  Carpenter 
  and 
  does 
  

   not 
  indicate 
  the 
  present 
  whereabouts 
  of 
  the 
  specimens. 
  To 
  date 
  the 
  type 
  has 
  not 
  been 
  found. 
  

  

  45 
  Skrtft. 
  Nat. 
  Selsk, 
  vol. 
  4, 
  H. 
  2, 
  p. 
  115. 
  Complete 
  reference 
  is 
  not 
  at 
  present 
  available 
  

   or 
  verified. 
  

  

  