﻿198 
  MARINE 
  MOLLUSC 
  A 
  DESCRIBED 
  BY 
  P. 
  P. 
  CARPENTER 
  

  

  Nautilus, 
  vol. 
  2)7, 
  no. 
  2, 
  p. 
  43; 
  Oldroyd, 
  1924, 
  Pub. 
  Puget 
  Sound 
  Biol. 
  Station, 
  vol. 
  4, 
  p. 
  

   151 
  ; 
  1927, 
  pt. 
  Ill, 
  p. 
  70, 
  pi. 
  31, 
  fig. 
  6 
  same 
  as 
  Dall, 
  1921 
  ; 
  Grant 
  and 
  Gale, 
  1931, 
  p. 
  783; 
  

   Bailv, 
  1935, 
  West 
  Coast 
  Shells 
  (Keep), 
  p. 
  201; 
  Keen, 
  1937, 
  p. 
  Z7 
  ; 
  Burch, 
  1945, 
  no. 
  55, 
  

   p. 
  16, 
  18; 
  WooDRiNG, 
  Bramlette, 
  and 
  Kew, 
  1946, 
  U. 
  S. 
  Geol. 
  Sur., 
  Prof. 
  Paper 
  207, 
  p. 
  

   65, 
  pi. 
  34, 
  fig. 
  5. 
  Pleistocene; 
  Smith 
  and 
  Gordon, 
  1948, 
  California 
  Acad. 
  Sci., 
  Proc., 
  ser. 
  

   4, 
  vol. 
  XXVI, 
  p. 
  196 
  

   Fossarus 
  fcncstrata 
  (Carpenter), 
  Tryon, 
  1887, 
  Man. 
  Conch., 
  vol. 
  IX, 
  p. 
  272, 
  pi. 
  52, 
  fig. 
  11 
  

   section 
  Isapis 
  

  

  "Like 
  ovoidca, 
  with 
  sharp 
  distant 
  ribs." 
  [Carpenter, 
  1864b, 
  p. 
  656] 
  

  

  Oldroyd 
  (1927) 
  included 
  part 
  of 
  Carpenter's 
  description 
  (1864d) 
  of 
  this 
  species. 
  How- 
  

   ever, 
  through 
  typographical 
  errors 
  so 
  much 
  of 
  the 
  Latin 
  description 
  was 
  omitted 
  that 
  it 
  seems 
  

   best 
  to 
  copy 
  here 
  the 
  entire 
  description 
  : 
  

  

  "I. 
  testa 
  /. 
  ovoidcac 
  forma 
  et 
  indole 
  simili 
  ; 
  carinis 
  IX. 
  acutis 
  (quarum 
  IV. 
  in 
  spira 
  mon- 
  

   strantur) 
  cincta, 
  intcrstitiis 
  duplo 
  latioribus, 
  concinne 
  quadratim 
  decussatis, 
  lirulis 
  radiantibus 
  

   acutissimus 
  ; 
  anfr. 
  postice 
  tumentibus, 
  suturis 
  valde 
  excavatis 
  ; 
  peritremate 
  continuo, 
  labro 
  a 
  

   carinis 
  pectinato; 
  labio 
  parietem 
  parum 
  attingente, 
  medio 
  calloso 
  ; 
  umbilico 
  angusto. 
  Long. 
  .18, 
  

   long. 
  spir. 
  .13, 
  lat. 
  .19, 
  div. 
  70°. 
  

  

  "Hab. 
  Neeah 
  Bay 
  (Swan) 
  ; 
  S. 
  Diego 
  and 
  Sta. 
  Barbara 
  Island 
  (Cooper). 
  

  

  "Dr. 
  Cooper's 
  shells 
  are 
  much 
  smaller 
  than 
  those 
  from 
  the 
  Vancouver 
  district, 
  which 
  are 
  

   white 
  and 
  eroded, 
  varying 
  much 
  in 
  the 
  size 
  of 
  the 
  umbilicus." 
  [Carpenter, 
  1864d, 
  p. 
  429] 
  

  

  The 
  type 
  material 
  includes 
  three 
  specimens 
  labelled 
  "Sta. 
  Barbara 
  and 
  S. 
  Diego." 
  These 
  

   are 
  obviously 
  the 
  specimens 
  collected 
  by 
  Cooper. 
  They 
  are 
  not 
  segregated 
  so 
  that 
  one 
  can- 
  

   not 
  stipulate 
  the 
  type 
  locality. 
  But 
  it 
  makes 
  tlie 
  California 
  area 
  the 
  type 
  locality 
  in 
  place 
  of 
  

   that 
  mentioned 
  first 
  in 
  the 
  expanded 
  description. 
  

  

  Dimensions. 
  — 
  Height 
  5-f 
  mm.; 
  greatest 
  diameter 
  3.5 
  mm. 
  (largest 
  specimen); 
  height 
  3 
  

   mm. 
  ; 
  greatest 
  diameter 
  2.5 
  mm. 
  (smallest 
  specimen) 
  

  

  Syntypes. 
  — 
  U. 
  S. 
  National 
  Museum, 
  nos. 
  15772 
  and 
  15775 
  

  

  Distribution. 
  — 
  Recent. 
  Santa 
  Barbara 
  and 
  San 
  Diego, 
  California 
  (type) 
  ; 
  Puget 
  Sound 
  to 
  

   the 
  Gulf 
  of 
  California 
  (Dall). 
  Pleistocene. 
  California 
  (Arnold; 
  Oldroyd, 
  1925; 
  Grant 
  and 
  

   Gale; 
  Willett, 
  1937; 
  Woodring, 
  Bramlette, 
  and 
  Kew, 
  1946) 
  

  

  Iselica 
  obtusa 
  (Carpenter 
  

   (PI. 
  21, 
  figs. 
  17, 
  18) 
  

  

  Isapis 
  obtusa 
  Carpenter, 
  1864b, 
  p. 
  613, 
  656; 
  Reprint, 
  1872, 
  p. 
  99, 
  142; 
  1866, 
  California 
  Acad. 
  

   Sci., 
  Proc, 
  vol. 
  Ill, 
  p. 
  217; 
  Cooper, 
  1867, 
  Geog. 
  Cat. 
  Moll., 
  Geol. 
  Sur. 
  California, 
  p. 
  29; 
  

   1870, 
  Amer. 
  Jour. 
  Conch., 
  vol. 
  VI, 
  p. 
  64; 
  Keep. 
  1887, 
  West 
  Coast 
  Shells, 
  p. 
  65; 
  Dall, 
  

   1921, 
  p. 
  155; 
  Oldroyd, 
  1927, 
  vol. 
  II, 
  pt. 
  Ill, 
  p. 
  71; 
  Bau^y, 
  1935, 
  West 
  Coast 
  Shells 
  

   (Keep), 
  p. 
  201; 
  Keen, 
  1937, 
  p. 
  37; 
  Burch, 
  1945, 
  no. 
  55, 
  p. 
  16, 
  18; 
  Smith 
  and 
  Gordon, 
  

   1948, 
  California 
  Acad. 
  Sci., 
  Proc, 
  ser. 
  4. 
  vol. 
  XXVI. 
  p. 
  196 
  

  

  Fossarus 
  obtusus 
  (Carpenter), 
  Tryon, 
  1887, 
  Man. 
  Conch., 
  vol. 
  IX. 
  p. 
  273, 
  pi. 
  52, 
  fig. 
  12 
  

   "Whirls 
  [sic] 
  flattened 
  behind: 
  ribs 
  swollen, 
  uneven. 
  10-20 
  fm. 
  Cp." 
  [Carpenter, 
  1864b, 
  

  

  p. 
  656] 
  

  

  Oldroyd 
  (1927) 
  republished 
  a 
  copy 
  of 
  Carpenter's 
  description 
  (1866). 
  The 
  following 
  

   changes 
  should 
  be 
  made 
  in 
  her 
  copy 
  : 
  

   Delete 
  "poll." 
  

   Add: 
  

  

  ". 
  . 
  . 
  State 
  Collection, 
  no. 
  682." 
  

  

  ". 
  . 
  . 
  Div. 
  60°. 
  

  

  "Hab. 
  S. 
  Diego, 
  10 
  fm. 
  ; 
  Sta. 
  Barbara, 
  20 
  fm. 
  ; 
  Cooper. 
  

  

  "The 
  fortunate 
  discovery 
  of 
  some 
  perfect 
  young 
  specimens 
  displays 
  a 
  nucleus 
  so 
  like 
  Odos- 
  

   tomia 
  that, 
  despite 
  the 
  resemblance 
  of 
  the 
  shell 
  to 
  Fossarus, 
  which 
  has 
  a 
  tuberoid 
  nucleus, 
  it 
  

   most 
  probably 
  belongs 
  to 
  PyranndclUdae." 
  [Carpenter, 
  1866, 
  p. 
  217] 
  

  

  The 
  syntypes 
  consist 
  of 
  four 
  specimens 
  witli 
  a 
  label 
  "10 
  fm. 
  San 
  Diego 
  Cooper 
  Cotype." 
  

  

  The 
  specimens 
  collected 
  by 
  Hanham 
  (1911, 
  p. 
  112-114) 
  at 
  Maple 
  Bay, 
  Vancouver 
  Island, 
  

   were 
  described 
  as 
  the 
  new 
  variety 
  /. 
  obtusa 
  laxa 
  by 
  Dall 
  (1919c, 
  p. 
  351). 
  

  

  Syntypes.— 
  \i. 
  S. 
  National 
  Museum, 
  no. 
  14814 
  [14936] 
  

  

  Distribution. 
  — 
  San 
  Diego, 
  California 
  (type) 
  ; 
  Puget 
  Sound. 
  Washington, 
  to 
  San 
  Diego, 
  

   California 
  (Burch) 
  ; 
  Hanham, 
  (1911) 
  for 
  habitat 
  of 
  /. 
  obtusa 
  laxa 
  Dall). 
  

  

  