﻿GASTROPODA 
  191 
  

  

  applied 
  the 
  name 
  to 
  a 
  West 
  Coast 
  "Scala" 
  (1907) 
  and 
  later 
  to 
  another 
  species 
  from 
  the 
  same 
  

   region 
  (1917).^^ 
  The 
  Epitonium 
  montereyense 
  Dall 
  (1917, 
  p. 
  481) 
  was 
  renamed 
  S. 
  [ 
  = 
  

   Rpitoniiiiu] 
  rcgiomontana 
  Dall 
  in 
  De 
  Boury 
  (1919) 
  (Keen 
  in 
  Burch, 
  1945, 
  p. 
  31). 
  This 
  name 
  

   is 
  not 
  accounted 
  for 
  in 
  Berry 
  (1948, 
  p. 
  15), 
  nor 
  is 
  the 
  fact 
  that 
  E. 
  montereyense 
  Dall 
  (1907) 
  

   is 
  preoccupied 
  by 
  that 
  of 
  De 
  Boury 
  (1889). 
  Fortunately 
  the 
  name 
  of 
  Opalia 
  evicta 
  de 
  Boury 
  

   is 
  available 
  and 
  to 
  which 
  the 
  species 
  may 
  remain 
  listed, 
  the 
  same 
  as 
  in 
  Dall 
  (1921, 
  p. 
  114). 
  

   Dimensions. 
  — 
  Length 
  16 
  mm.; 
  diameter 
  5 
  mm. 
  (Dall) 
  

  

  Syntypcs. 
  — 
  U. 
  S. 
  National 
  Museum 
  no. 
  23397 
  (Dall, 
  no. 
  56054), 
  O. 
  pliiricostata 
  Dall 
  

   Distribution. 
  — 
  Neah 
  Bay, 
  Washington 
  (type, 
  O. 
  pliiricostata) 
  ; 
  Forrester 
  Island, 
  Alaska, 
  

   to 
  Magdalena 
  Bay, 
  Lower 
  California 
  (Dall) 
  

  

  Subgenus 
  Dentiscala 
  de 
  Boury, 
  1886 
  

  

  Priilisrala 
  de 
  Boiirv, 
  1886, 
  Afonographie 
  des 
  Scalidae 
  vivante 
  et 
  fossilcs, 
  I, 
  pt. 
  1. 
  p. 
  XXI 
  

   Type 
  species 
  by 
  monotypy, 
  D. 
  crcnata 
  (Linnaeus), 
  1758, 
  Syst. 
  Nat., 
  p. 
  765 
  as 
  Turbo. 
  Living. 
  

   Mediterranean 
  and 
  Atlantic, 
  Tryon, 
  Man. 
  Conch., 
  1887, 
  vol. 
  IX, 
  pi. 
  16, 
  fig. 
  97; 
  Clench 
  

   AND 
  Turner, 
  1950, 
  Johnsonia, 
  vol. 
  2, 
  no. 
  29, 
  pi. 
  100, 
  fig. 
  4; 
  pi. 
  101, 
  figs. 
  1-3 
  

  

  Opalia 
  (Dentiscala) 
  insculpta 
  Carpenter 
  

   (PI. 
  22, 
  figs. 
  4, 
  5) 
  

  

  Opalia 
  (? 
  crcnatoides, 
  var.) 
  insculpta 
  Carpenter, 
  1864b, 
  p. 
  539, 
  619, 
  660; 
  Reprint, 
  1872, 
  

  

  p. 
  25, 
  105, 
  146; 
  1866, 
  Ann. 
  Mag. 
  Nat. 
  Hist, 
  ser. 
  3, 
  vol. 
  XVII, 
  p. 
  275, 
  277; 
  Reprint, 
  1872, 
  

  

  p. 
  322, 
  324; 
  Cooper, 
  1867, 
  Geog. 
  Cat. 
  _Moll., 
  Geol. 
  Sur. 
  California, 
  p. 
  34; 
  1888. 
  7th 
  Ann. 
  

  

  Rept. 
  California 
  State 
  Man. 
  Bur., 
  p. 
  255 
  

   Dentiscala 
  crcnatoides 
  (Carpenter), 
  Cossm.\nn, 
  1912, 
  Essais 
  de 
  Paleoconchologie 
  Comp., 
  

  

  9 
  liv., 
  p. 
  90 
  should 
  have 
  been 
  var. 
  insculpta 
  

   Epitonium 
  (Dentiscala) 
  insculpta 
  (Carpenter), 
  Dall, 
  1917, 
  V. 
  S. 
  Nat. 
  Mus., 
  Proc, 
  vol. 
  53, 
  

  

  no. 
  2217; 
  p. 
  473; 
  Baker, 
  Hanna, 
  and 
  Strong, 
  1930, 
  California 
  Acad. 
  Sci., 
  Proc., 
  ser. 
  4, 
  

  

  vol. 
  XIX, 
  p. 
  48; 
  Grant 
  and 
  Gale, 
  1931, 
  p. 
  855 
  D. 
  insculptnm 
  

   Dentiscala 
  insculpta 
  (Carpenter), 
  Van 
  Winkle 
  [Palmer], 
  1921, 
  Bull. 
  Amer. 
  Paleont., 
  vol. 
  

  

  VIII. 
  no. 
  36, 
  p. 
  4, 
  pi. 
  1, 
  figs. 
  10, 
  11 
  holotype 
  

   Epitonium 
  insculptum 
  (Carpenter), 
  Willett, 
  Nautilus, 
  vol. 
  52, 
  no. 
  1, 
  p. 
  10 
  

   Epitonium 
  crcnimarginatum 
  Dall, 
  Willett, 
  1938, 
  Nautilus, 
  vol. 
  52, 
  no. 
  1, 
  p. 
  10 
  

   Opalia 
  (Dentiscala) 
  insculpta 
  (Carpenter), 
  Burch, 
  1945, 
  no. 
  52, 
  p. 
  18; 
  Burch, 
  1947, 
  no. 
  

  

  74, 
  p. 
  24; 
  Abbott, 
  1954, 
  p. 
  162 
  

  

  "Like 
  the 
  C. 
  S. 
  L. 
  form 
  and 
  crcnata. 
  but 
  ribs 
  closer, 
  without 
  spiral 
  sculpture, 
  sutural 
  holes 
  

   behind 
  the 
  basal 
  rib." 
  — 
  [Carpenter, 
  1864b, 
  p. 
  660] 
  

  

  "O. 
  testa 
  O. 
  crcnatoidei 
  simili 
  ; 
  sed 
  costis 
  radiantibus 
  pluribus, 
  XIII 
  — 
  XVI, 
  in 
  spira 
  

   validis 
  anfr. 
  ult. 
  obsoletis 
  ; 
  sculptura 
  spirali 
  nulls 
  ; 
  punctis 
  suturalibus 
  minus 
  impressis, 
  circa 
  

   fasciam 
  basalem 
  laevem 
  postice, 
  non 
  antice 
  continuis. 
  

  

  "Hab. 
  Sta. 
  Barbara, 
  Pleistocene, 
  I 
  sp. 
  (Jezvett). 
  

  

  "Very 
  closely 
  related 
  to 
  O. 
  crcnatoides, 
  now 
  living 
  at 
  Cape 
  St. 
  Lucas, 
  and, 
  with 
  it, 
  to 
  the 
  

   Portuguese 
  O. 
  crcnata. 
  It 
  is 
  quite 
  possible 
  that 
  the 
  three 
  forms 
  had 
  a 
  common 
  origin." 
  [Car- 
  

   penter, 
  1866h, 
  p. 
  277] 
  

  

  The 
  exterior 
  of 
  the 
  shell 
  of 
  this 
  type 
  has 
  been 
  worn 
  away 
  except 
  in 
  the 
  sutural 
  region, 
  

   hence 
  the 
  exact 
  character 
  of 
  the 
  longitudinal 
  ribs 
  cannot 
  be 
  described. 
  However, 
  prominent 
  

   impressions 
  of 
  each 
  reveal 
  14 
  ribs 
  on 
  the 
  whorls. 
  

  

  This 
  specimen 
  has 
  an 
  original 
  label 
  which 
  reads, 
  "Drawn 
  by 
  Sowerby 
  for 
  the 
  SI." 
  

  

  Dimensions 
  of 
  type. 
  — 
  Length 
  14 
  mm. 
  ; 
  greatest 
  diameter 
  7 
  mm. 
  

  

  O. 
  crenimarginata 
  (Dall) 
  (1917c, 
  p. 
  473) 
  is 
  thought, 
  particularly 
  by 
  Strong 
  (Baker, 
  

   Hanna, 
  and 
  Strong, 
  1930 
  ; 
  Smith 
  and 
  Gordon, 
  1948) 
  to 
  be 
  a 
  synonym 
  of 
  the 
  fossil, 
  O. 
  in- 
  

   sculpta 
  Carpenter. 
  This 
  combination 
  is 
  the 
  basis 
  of 
  the 
  range 
  in 
  the 
  Recent 
  fauna 
  from 
  

   "Monterey 
  [?] 
  to 
  Puerto 
  Libertad, 
  West 
  Mexico," 
  for 
  O. 
  insculpta. 
  Those 
  who 
  are 
  familiar 
  

   with 
  the 
  Monterey 
  shells 
  doubt 
  the 
  existence 
  of 
  the 
  species 
  in 
  that 
  area 
  (Smith 
  and 
  Gordon, 
  

   1948. 
  p. 
  190). 
  

  

  The 
  holotype 
  of 
  O. 
  insculpta 
  is 
  so 
  badly 
  worn 
  that 
  the 
  writer 
  questions 
  Carpenter's 
  au- 
  

   thority 
  for 
  stating 
  that 
  there 
  was 
  no 
  spiral 
  structure. 
  O. 
  insculpta 
  has 
  14 
  longitudinal 
  ribs, 
  

  

  ^" 
  Dall 
  (1917, 
  p. 
  481) 
  not 
  same 
  Epitonium 
  as 
  on 
  page 
  477 
  = 
  Opalia 
  pliiricostata 
  Cpr. 
  ms. 
  

   Dall 
  (1917) 
  = 
  Scalaria 
  (Opalia) 
  evicta 
  de 
  Boury 
  (1919). 
  

  

  