﻿AMPHINEURA 
  263 
  

  

  Pilsbry 
  (reprinted 
  by 
  Oldroyd, 
  1927) 
  published 
  a 
  translation 
  of 
  Carpenter's 
  detailed 
  

   Latin 
  description 
  (1866). 
  The 
  lines 
  not 
  included 
  by 
  Pilsbry 
  are: 
  

  

  "Long. 
  0.30, 
  lat. 
  0.18; 
  div. 
  90°. 
  

  

  "Hab. 
  Catalina 
  Island, 
  10-20 
  fm. 
  Cooper. 
  

  

  "The 
  appearance 
  of 
  this 
  northern 
  genus 
  among 
  the 
  Alopaliae 
  and 
  Ischnochitons 
  is 
  very 
  

   remarkable; 
  as 
  is 
  the 
  character 
  of 
  the 
  mantlemargin." 
  [Carpenter, 
  1866, 
  p. 
  213] 
  

  

  The 
  holotype 
  has 
  a 
  printed 
  label, 
  "Type 
  Cataline 
  Id. 
  Cooper." 
  The 
  posterior 
  and 
  anterior 
  

   plates 
  (one 
  broken) 
  are 
  separate 
  from 
  the 
  remainder 
  of 
  the 
  specimen 
  which 
  is 
  intact. 
  The 
  

   surface 
  has 
  fine 
  striae. 
  The 
  sides 
  are 
  mottled, 
  but 
  there 
  is 
  lack 
  of 
  color 
  down 
  the 
  middle. 
  

   The 
  beaks 
  are 
  slightly 
  pointed. 
  

  

  Holotype. 
  — 
  U. 
  S. 
  National 
  Aluscum, 
  no. 
  16270 
  

  

  Distribution. 
  — 
  Recent. 
  Catalina 
  Island, 
  California 
  (type), 
  Catalina 
  Island, 
  to 
  Gulf 
  of 
  

   California 
  (Dall). 
  See 
  Table 
  2 
  for 
  stratigraphic 
  distribution 
  

  

  Leptochiton 
  rugatus 
  (Pilsbry) 
  

   (PL 
  28, 
  fig. 
  7; 
  PI. 
  35, 
  fig. 
  3) 
  

  

  Lepidopleiinis 
  rugatus 
  "Carpenter," 
  Pilsbry, 
  1892, 
  Man. 
  Conch., 
  vol. 
  XIV, 
  p. 
  11, 
  pi. 
  3, 
  

   figs. 
  67-70 
  "Leptochiton 
  (? 
  internexus 
  var.) 
  rugatus 
  Cpr. 
  ms., 
  p. 
  3"; 
  Thiele, 
  1909, 
  

   Zoologica, 
  Bd. 
  22, 
  Heft 
  S6, 
  p. 
  12, 
  pi. 
  1, 
  figs. 
  41-50; 
  Dall, 
  1921, 
  p. 
  186 
  section 
  Leptochiton; 
  

   Oldroyd, 
  1927, 
  vol. 
  II, 
  pt. 
  Ill, 
  p. 
  247 
  section 
  Leptochiton 
  

  

  Leptochiton 
  rugatus 
  (Pilsbry), 
  Smith 
  in 
  Burch, 
  1947, 
  no. 
  66, 
  p. 
  6; 
  Burch, 
  1947, 
  no. 
  66, 
  

   p. 
  17; 
  Smith 
  and 
  Gordon, 
  1948, 
  California 
  Acad. 
  Sci., 
  Proc, 
  ser. 
  4, 
  vol. 
  XXVI, 
  p. 
  205 
  

  

  According 
  to 
  the 
  indication 
  of 
  the 
  original 
  description 
  this 
  species 
  should 
  be 
  credited 
  to 
  

   Pilsbry, 
  and 
  the 
  types 
  are 
  those 
  (three) 
  in 
  the 
  Academy 
  of 
  Natural 
  Sciences 
  at 
  Philadelphia. 
  

  

  The 
  label 
  with 
  the 
  three 
  syntypes 
  reads, 
  "near 
  San 
  Tomas 
  River 
  L. 
  Cal. 
  H. 
  Hemphill" 
  

   (Pilsbry, 
  May 
  15, 
  1951, 
  personal 
  communication). 
  Material 
  consisting 
  of 
  five 
  specimens 
  and 
  

   an 
  extra 
  plate 
  in 
  the 
  U. 
  S. 
  National 
  Museum 
  is 
  labelled 
  "Type 
  San 
  Diego 
  H. 
  Hemphill 
  

   (Todos 
  Santos)." 
  The 
  specimen 
  is 
  figured 
  herein. 
  However, 
  the 
  specimens 
  defined 
  as 
  types 
  

   by 
  Pilsbry 
  in 
  the 
  Academy 
  of 
  Natural 
  Sciences 
  are 
  the 
  true 
  types. 
  The 
  species 
  was 
  figured 
  

   by 
  Pilsbry. 
  

  

  Syntypes. 
  — 
  Academy 
  of 
  Natural 
  Sciences, 
  Philadelphia, 
  no. 
  35586 
  

  

  Distribution. 
  — 
  Near 
  San 
  Tomas 
  River, 
  Lower 
  California 
  (type) 
  ; 
  Monterey, 
  California, 
  

   to 
  Todos 
  Santos 
  Bay, 
  Lower 
  California 
  (Pilsbry) 
  

  

  Family 
  Lepidochitonidae 
  

  

  Genus 
  Lepidochitona 
  Gray, 
  1821 
  

  

  {Craspedochilus 
  Sars, 
  1878) 
  

  

  Lepidochitona 
  Gray, 
  1821, 
  London 
  Medical 
  Repository, 
  vol. 
  XV, 
  p. 
  234. 
  Typographical 
  

   error 
  Leptochitona 
  in 
  Pilsbry, 
  1892, 
  Man. 
  Conch., 
  vol. 
  XIV, 
  p. 
  150; 
  Iredale, 
  1914, 
  

   Malacol. 
  Soc. 
  London, 
  Proc, 
  vol. 
  11, 
  p. 
  127 
  

  

  Type 
  species 
  by 
  monotypy. 
  Chiton 
  marginatus 
  [Pennant], 
  1777, 
  British 
  Zool., 
  vol. 
  IV, 
  p. 
  60, 
  

   pi. 
  36, 
  fig. 
  2. 
  Recent. 
  Northern 
  Europe 
  

  

  Pilsbry 
  (1892, 
  p. 
  69) 
  referred 
  C. 
  marginatus 
  Pennant 
  (and 
  of 
  other 
  British 
  authors) 
  to 
  

   Ischnochiton 
  (Trachydermon) 
  cinereus 
  Linnaeus 
  (Committee 
  Conch. 
  Soc, 
  1901, 
  Jour. 
  

   Conch., 
  vol. 
  X, 
  p. 
  10). 
  

  

  Genus 
  Cyanoplax 
  Pilsbry, 
  1892 
  

  

  Cyanoplax 
  Pilsbry, 
  1892, 
  Man. 
  Conch., 
  vol. 
  XIV, 
  p. 
  40 
  

  

  Type 
  species 
  by 
  original 
  designation, 
  Cyanoplax 
  harfzcegii 
  (Carpenter), 
  1855, 
  Zool. 
  Soc. 
  

  

  London, 
  Proc, 
  p. 
  231. 
  Living. 
  Forrester 
  Island, 
  Alaska, 
  to 
  Gulf 
  of 
  California, 
  (pi. 
  27, 
  

  

  figs. 
  8-10; 
  pi. 
  28, 
  figs. 
  8-15) 
  

  

  See 
  discussion 
  of 
  Trachydermon 
  Carpenter, 
  1864, 
  under 
  Basiliochiton 
  Berry. 
  

  

  