﻿154 
  MARINE 
  MOLLUSCA 
  DESCRIBEn 
  BY 
  P. 
  P. 
  CARPENTER 
  

  

  Because 
  of 
  the 
  variability 
  of 
  the 
  Lacunae 
  as 
  manifested 
  in 
  a 
  small 
  way 
  by 
  the 
  examples 
  

   of 
  the 
  Carpenter 
  type 
  material 
  and 
  the 
  complexity 
  of 
  the 
  names 
  involved 
  in 
  the 
  L. 
  divaricata- 
  

   solidula 
  — 
  carinata 
  — 
  porrecta 
  and 
  variations 
  — 
  compacta 
  problem, 
  the 
  writer 
  has 
  analyzed 
  each 
  

   Carpenter 
  name 
  and 
  data 
  separately. 
  The 
  reasonable 
  suggestion 
  that 
  L. 
  porrecta 
  and 
  varia- 
  

   tions 
  may 
  fall 
  under 
  L. 
  carinata 
  Gould 
  led 
  the 
  writer 
  to 
  use 
  the 
  comprehensive 
  heading 
  of 
  

   L. 
  carinata 
  for 
  the 
  group. 
  Because 
  there 
  seemed 
  to 
  be 
  considerable 
  confusion 
  in 
  the 
  Gould 
  

   dates 
  and 
  references 
  of 
  L. 
  carinata, 
  the 
  above 
  list 
  has 
  been 
  included. 
  

  

  Lacuna 
  porrecta 
  Carix;ntcr 
  

   (PI. 
  19, 
  figs. 
  18, 
  19) 
  

  

  Lacuna 
  porrecta 
  Carpenter, 
  1864b, 
  Aug., 
  p. 
  628, 
  656; 
  Reprint, 
  1872, 
  p. 
  114, 
  142; 
  1864, 
  Dec, 
  

   Ann. 
  Mag. 
  Nat. 
  Hist., 
  ser. 
  3, 
  vol. 
  XIV, 
  p. 
  428; 
  Reprint, 
  1872, 
  p. 
  240; 
  Tryon, 
  1887, 
  Man. 
  

   Conch., 
  vol. 
  IX, 
  p. 
  265, 
  pi. 
  50, 
  fig. 
  55 
  ; 
  Cooper, 
  1867, 
  Geog. 
  Cat. 
  Moll., 
  Geol. 
  Sur. 
  Califor- 
  

   nia, 
  p. 
  29; 
  Cooper, 
  1870, 
  Amer. 
  Jour. 
  Conch., 
  vol. 
  VI, 
  p. 
  64; 
  Keep, 
  1887, 
  West 
  Coast 
  

   Shells, 
  p. 
  66; 
  Arnold, 
  1903, 
  p. 
  303; 
  Jord.\n, 
  1920, 
  U. 
  S. 
  Nat. 
  Mus., 
  Proc., 
  vol. 
  58, 
  no. 
  

   2325, 
  p. 
  3; 
  Ball, 
  1921, 
  p. 
  154, 
  pi. 
  14, 
  fig. 
  2 
  lectotype; 
  Oldroyd, 
  1924, 
  Pub. 
  Puget 
  Sound 
  

   Biol. 
  Station, 
  vol. 
  4, 
  p. 
  149; 
  Strong, 
  1924, 
  Nautilus, 
  vol. 
  38, 
  no. 
  1, 
  p. 
  17; 
  Oldroyd, 
  1927, 
  

   vol. 
  II, 
  pt. 
  Ill, 
  p. 
  64, 
  pt. 
  II, 
  pi. 
  32, 
  fig. 
  9 
  same 
  as 
  Dall, 
  1921; 
  Grant 
  and 
  Gale, 
  1931, 
  

   p. 
  783 
  ; 
  Keen, 
  1937, 
  p. 
  2,7 
  

  

  Lacuna 
  carinata 
  Gould, 
  Burch, 
  1945, 
  no. 
  55, 
  p. 
  13, 
  2>7 
  L. 
  porrecta 
  placed 
  in 
  synonymy 
  on 
  

   authority 
  of 
  Woodring 
  ; 
  Woodring, 
  Bramlette, 
  and 
  Kew, 
  1946, 
  U. 
  S. 
  Geol. 
  Sur., 
  Prof. 
  

   Paper 
  207, 
  p. 
  65; 
  Smith 
  and 
  Gordon, 
  1948, 
  California 
  Acad. 
  Sci., 
  Proc, 
  ser. 
  4, 
  vol. 
  

   XXVI, 
  no. 
  8, 
  p. 
  196 
  

  

  "Upper 
  whirls 
  flattened, 
  efifuse 
  anteriorly; 
  chink 
  large." 
  [Carpenter, 
  1864b, 
  p. 
  656] 
  

   The 
  dimensions 
  in 
  Oldroyd's 
  (1927) 
  copy 
  of 
  Carpenter's 
  description 
  (1865) 
  should 
  be 
  

   corrected 
  as 
  follows 
  : 
  

  

  For 
  52 
  read 
  .52 
  ; 
  for 
  2 
  read 
  .2 
  ; 
  for 
  4 
  read 
  .4 
  ; 
  delete 
  "poll." 
  

  

  The 
  following 
  lines 
  should 
  be 
  added 
  to 
  make 
  the 
  description 
  complete. 
  

  

  '•. 
  . 
  . 
  div. 
  80°. 
  

  

  "Hab. 
  Neeah 
  Bay 
  {Swan). 
  

  

  "The 
  form 
  L. 
  exaequata 
  is 
  intermediate 
  between 
  the 
  very 
  different 
  /-. 
  porrecta 
  and 
  L. 
  

   effusa. 
  The 
  Lacunae 
  vary 
  so 
  much 
  (fide 
  Forbes 
  and 
  Hanley 
  in 
  loco) 
  that, 
  even 
  with 
  a 
  large 
  

   multitude 
  of 
  specimens, 
  it 
  is 
  not 
  easy 
  to 
  state 
  what 
  constitutes 
  a 
  species." 
  [Carpenter, 
  1864d, 
  

   p. 
  428 
  1 
  

  

  The 
  type 
  material 
  consists 
  of 
  10 
  specimens 
  of 
  different 
  ages. 
  One 
  of 
  the 
  specimens 
  selected 
  

   to 
  figure 
  herein 
  is 
  intermediate 
  in 
  age 
  and 
  best 
  shows 
  the 
  white 
  bands. 
  The 
  other 
  specimens 
  

   were 
  more 
  worn. 
  Dall 
  figured 
  a 
  larger 
  specimen. 
  Since 
  he 
  considered 
  or 
  designated 
  the 
  

   specimen 
  as 
  type 
  in 
  1921, 
  that 
  specimen 
  will 
  be 
  designated 
  the 
  lectotype. 
  

  

  The 
  label, 
  which 
  is 
  not 
  original, 
  is, 
  "Type 
  Neeah 
  Bay 
  Wash. 
  J. 
  G. 
  .Swan." 
  The 
  shells 
  

   are 
  thin 
  and 
  umbilicatc. 
  

  

  The 
  drawing 
  in 
  Dall 
  (1921) 
  seems 
  to 
  exaggerate 
  the 
  carination 
  of 
  the 
  body 
  whorl 
  and 
  

   umbilical 
  channel 
  more 
  than 
  a 
  photograph 
  does. 
  

  

  One 
  doubts 
  the 
  propriety 
  of 
  maintaining 
  the 
  subspecies 
  as 
  named 
  by 
  Carpenter 
  in 
  a 
  group 
  

   such 
  as 
  Lacuna. 
  They 
  are 
  enumerated 
  separately 
  in 
  this 
  paper 
  so 
  that 
  the 
  type 
  data 
  are 
  

   readily 
  accessible. 
  Their 
  headings 
  are 
  italicized 
  to 
  differentiate 
  from 
  the 
  rank 
  of 
  recognized 
  

   species. 
  

  

  Types. 
  — 
  Lectotype 
  and 
  syntypes, 
  U. 
  S. 
  National 
  Museum, 
  no. 
  15549b 
  

  

  Distribution. 
  — 
  Recent. 
  Neah 
  Bay, 
  Washington 
  (type) 
  ; 
  Commander 
  Islands, 
  Bering 
  Sea, 
  

   southward 
  and 
  eastward 
  to 
  San 
  Diego, 
  California 
  (Dall). 
  Pleistocene. 
  California 
  (? 
  Arnold; 
  

   Grant 
  and 
  Gale) 
  

  

  Lacuna 
  porrecta 
  exaequata 
  Carpenter 
  

   (PI. 
  19, 
  figs. 
  22, 
  23) 
  

  

  Lacuna 
  porrecta 
  exaequata 
  Carpenter, 
  1864b, 
  p. 
  628, 
  656; 
  Reprint, 
  1872, 
  p. 
  114, 
  142; 
  1864. 
  

   Ann. 
  Mag. 
  Nat. 
  Hist., 
  ser. 
  3, 
  vol. 
  XIV. 
  p. 
  428; 
  Reprint. 
  1872, 
  p. 
  240; 
  Cooper, 
  1867, 
  Geog. 
  

   Cat. 
  Moll., 
  Geol. 
  Sur. 
  California, 
  p. 
  29; 
  Tryon. 
  1887, 
  Man. 
  Conch., 
  vol. 
  IX, 
  p. 
  266, 
  pi. 
  50, 
  

   fig. 
  57; 
  Dall, 
  1921. 
  p. 
  154; 
  Oldroyd, 
  1924, 
  Pub. 
  Puget 
  Sound 
  Biol. 
  Station, 
  vol. 
  4, 
  

  

  