﻿AMPIIINEURA 
  283 
  

  

  California, 
  p. 
  22; 
  Pii.sbry, 
  1892, 
  Man. 
  Conch., 
  vol. 
  XIV, 
  p. 
  303, 
  pi. 
  62, 
  figs. 
  95-97; 
  Berry, 
  

   1917, 
  California 
  Acad. 
  Sci., 
  Proc, 
  ser. 
  4, 
  vol. 
  VII, 
  p. 
  241; 
  Dall, 
  1921, 
  p. 
  196; 
  Oldroyd, 
  

   1927, 
  vol. 
  II, 
  pt. 
  Ill, 
  p. 
  309; 
  BuRCH, 
  1947, 
  no. 
  66, 
  p. 
  19; 
  Smith 
  and 
  Gordon, 
  1948, 
  Cali- 
  

   fornia 
  Acad. 
  Sci., 
  Proc, 
  ser. 
  4, 
  vol. 
  XXVI, 
  p. 
  206 
  

   Mopalia 
  {Placiphorella) 
  sinuata 
  (Carpenter), 
  Dall, 
  1879, 
  U. 
  S. 
  National 
  Museum, 
  Proc., 
  

  

  vol. 
  I, 
  p. 
  303, 
  306 
  

   Osteochiton 
  sinuata 
  (Carpenter), 
  Dall, 
  1886, 
  U. 
  S. 
  Nat. 
  Mas., 
  Proc. 
  1885, 
  vol. 
  9, 
  p. 
  211 
  

   Mopalia 
  cf. 
  sinuata 
  Carpenter, 
  Berry, 
  1922, 
  California 
  Acad. 
  Sci., 
  Proc, 
  ser. 
  4, 
  vol. 
  XI, 
  no. 
  

   18, 
  p. 
  451, 
  pi. 
  VI, 
  figs. 
  7-8 
  Pleistocene 
  

  

  "Small, 
  raised 
  sharp 
  back, 
  red 
  and 
  blue, 
  engine 
  — 
  turned 
  ; 
  post, 
  valve 
  deeply 
  notched." 
  

   [Carpenter, 
  1864b, 
  p. 
  648] 
  

  

  "? 
  M. 
  t. 
  parva, 
  subelongata, 
  elevata, 
  jugo 
  angulato 
  ; 
  rubido 
  et 
  caeruleo 
  elegantur 
  macu- 
  

   lata 
  ; 
  valvis 
  elongatis, 
  subquadratis 
  ; 
  areis 
  lateralibus 
  costa 
  augusta, 
  subelevata, 
  granulosa, 
  

   utraque 
  definitis 
  ; 
  suturis 
  quoque 
  granulosis 
  ; 
  tota 
  superfice 
  clarissime 
  reticulata, 
  punctis 
  areis 
  

   centralibus 
  valde, 
  areis 
  lateralibus 
  et 
  valvis 
  terminalibus 
  modice 
  impressis 
  ; 
  valvis 
  terminali- 
  

   bus 
  ut 
  in 
  areis 
  lateralibus 
  sculptis, 
  costis 
  acutis 
  radiantibus, 
  interstitiis 
  reticulatis 
  ; 
  yalva 
  

   postica 
  maxime 
  incisa, 
  sinu 
  alto, 
  acuto 
  mucronem 
  tenus 
  hand 
  conspicuam 
  effosa 
  : 
  intus 
  

   rosacea; 
  marginibus 
  apicinis 
  granulosis 
  tota 
  longitudine 
  intortis 
  ; 
  sinu 
  laminarum 
  saturaliuin 
  

   parvo, 
  angusto; 
  laminis 
  externis, 
  valvis 
  centralibus 
  semel 
  incisis 
  ; 
  valva 
  antica, 
  fissuris 
  

   circiter 
  VIII., 
  costis 
  convenientibus 
  ; 
  valva 
  postica, 
  fissura 
  laterali 
  utraque 
  costae 
  conveniente, 
  

   postice 
  maxime 
  sinuata 
  : 
  limbo 
  pallii 
  coriaceo, 
  pilulis 
  paucis 
  ; 
  poro 
  rotundato 
  parvo 
  suturis 
  

   utroque 
  latere 
  conveniente. 
  

  

  "Hab. 
  — 
  In 
  sinu 
  Pugetiano 
  specimina 
  duo 
  legit 
  Kennerley._ 
  

  

  "Mopaliis 
  typicus 
  structura 
  valvae 
  posticae 
  convenit: 
  poris 
  suturalibus 
  vix 
  definitis, 
  dif- 
  

   fert." 
  [Carpenter, 
  1865e, 
  p. 
  59] 
  

  

  Pilsbry 
  stated 
  that 
  his 
  description 
  and 
  figures 
  were 
  drawn 
  from 
  the 
  type 
  in 
  the 
  U. 
  S. 
  

   National 
  Museum. 
  There 
  is 
  also 
  a 
  specimen 
  in 
  the 
  Carpenter 
  Collection 
  in 
  the 
  Redpath 
  

   Museum 
  on 
  Carpenter's 
  original 
  glass 
  mount 
  with 
  Carpenter's 
  label, 
  "Placiphorella 
  sinuata 
  

   Cpr. 
  type 
  Puget 
  Sd. 
  Kennerly." 
  That 
  specimen, 
  consisting 
  of 
  eight 
  loose 
  plates, 
  is 
  illustrated 
  

   herein. 
  

  

  Syntypcs. 
  — 
  U. 
  S. 
  National 
  Museum, 
  no. 
  4473 
  ; 
  Redpath 
  Museum, 
  no. 
  58 
  

   Distribution.— 
  Fuget 
  Sound, 
  Washington 
  (tj^pe) 
  ; 
  Forrester 
  Island, 
  to 
  San 
  Francisco, 
  

   California 
  (Dall) 
  

  

  Mopalia 
  swanii 
  Carpenter 
  

  

  Mopalia 
  (Kennerlevi, 
  var.) 
  Szvanii 
  Carpenter, 
  1864b 
  (p. 
  627 
  szvannii), 
  p. 
  648; 
  Reprint, 
  

   1872, 
  p. 
  113, 
  134: 
  1864, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  ser. 
  3, 
  vol. 
  XIV, 
  p._426; 
  Reprint. 
  1872, 
  

   p. 
  238 
  stvannii; 
  Cooper, 
  1867, 
  Geog. 
  Cat. 
  Moll., 
  Geol. 
  Sur. 
  California, 
  p. 
  21 
  

  

  Mopalia 
  ciliata 
  Sowerby, 
  Pilsbry, 
  1892, 
  Man. 
  Conch., 
  vol. 
  XIV, 
  p. 
  304 
  in 
  part 
  

  

  Mopalia 
  muscosaszmnil 
  Carpenter, 
  Dall, 
  1921, 
  p. 
  195; 
  Oldroyd, 
  1927, 
  vol. 
  II, 
  pt. 
  Ill, 
  p. 
  306; 
  

   Burch, 
  1947, 
  no. 
  66, 
  p. 
  19 
  

  

  Mopalia 
  ciliata 
  f 
  Sowerby, 
  1840), 
  Berry, 
  1922, 
  California 
  Acad. 
  Sci., 
  Proc, 
  ser. 
  4, 
  vol. 
  XI, 
  

   no. 
  18, 
  p. 
  449 
  in 
  part 
  

  

  Mopalia 
  swanii 
  Carpenter, 
  Berry, 
  1951, 
  Mai. 
  Soc. 
  London, 
  Proc, 
  vol. 
  28, 
  pt. 
  6, 
  p. 
  214-217, 
  

   219, 
  pi. 
  26, 
  fig. 
  15 
  

  

  ": 
  red, 
  ridge 
  arched; 
  less 
  sculptured.^ 
  ^o 
  [Carpenter, 
  1864b, 
  p. 
  648, 
  szvani] 
  

  

  "M. 
  testa 
  M. 
  Kenncrleyi 
  typicae 
  simili, 
  sed 
  jugo 
  fornicato, 
  baud 
  carinato; 
  omnino 
  rubida, 
  

  

  sculptura 
  multo 
  minus 
  expressa 
  ; 
  areis 
  lateralibus 
  vix 
  definitis; 
  latera 
  versus 
  subgranulata 
  ; 
  

  

  dorsum 
  versus 
  lineis 
  jugum 
  versus 
  procedentibus, 
  interstitiis 
  punctatis 
  ; 
  sinu 
  postico 
  latiore 
  ; 
  

  

  limbo 
  pallii 
  lato 
  ; 
  coriaceo, 
  vix 
  piluloso. 
  Long. 
  2.4, 
  lat.. 
  1., 
  div. 
  120°. 
  

  

  "Ha&.— 
  Tatooche 
  Island 
  {Sa'an)." 
  [Carpenter, 
  1864d, 
  p. 
  426, 
  s-Lvannii] 
  

  

  Berry 
  (1951) 
  believed 
  this 
  to 
  be 
  a 
  good 
  species 
  on 
  the 
  basis 
  of 
  a 
  series 
  of 
  British 
  

   Columbia 
  specimens. 
  He 
  included 
  a 
  good 
  illustration 
  in 
  his 
  paper. 
  

  

  Holotype. 
  — 
  Not 
  found 
  

  

  Distribution. 
  — 
  Tatooclie 
  Island, 
  Washington 
  (type) 
  ; 
  Shumagin 
  Islands, 
  Alaska, 
  to 
  

   Monterey, 
  California 
  (Dall) 
  

  

  140 
  If 
  this 
  brief 
  description 
  is 
  considered 
  the 
  original, 
  the 
  spelling 
  of 
  the 
  specific 
  name 
  is 
  

   spelled 
  with 
  one 
  "n." 
  This 
  is 
  closer 
  to 
  the 
  collector's 
  name, 
  J. 
  G. 
  Swan. 
  Since 
  Dall 
  (1921, 
  

   reviser) 
  the 
  name 
  has 
  been 
  spelled 
  with 
  one 
  "n." 
  

  

  