﻿284 
  MARINE 
  MOLI.USCA 
  DESCRIBED 
  BY 
  I'. 
  P. 
  CARPENTER 
  

  

  Genus 
  Dendrochiton 
  Berry, 
  1911 
  

  

  Dendrochiton 
  Berry, 
  1911, 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  Proc, 
  vol. 
  62>, 
  p. 
  487 
  

   Type 
  species 
  by 
  original 
  designation 
  Mupalia 
  (Dcudrochiton) 
  thamnopora 
  Berry, 
  1911, 
  

   Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  Proc, 
  vol. 
  63, 
  p. 
  487. 
  Recent. 
  Resurrection 
  Bay, 
  Alaska, 
  to 
  

   San 
  Martin 
  Island, 
  California 
  (Dall). 
  Berry, 
  1911, 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  Proc, 
  

   vol. 
  63, 
  p. 
  488, 
  figs. 
  1-3 
  

  

  Dendrochiton 
  gothicus 
  (Carpenter) 
  

   (PI. 
  2,2, 
  fig. 
  3) 
  

  

  Ischnochiton 
  (Trachydermon) 
  gothicus 
  Carpenter, 
  1864b, 
  p. 
  612; 
  Reprint, 
  1872, 
  p. 
  98, 
  

  

  nomen 
  nudum 
  

   Trachydermon 
  Gothicus 
  Carpenter, 
  1864b, 
  p. 
  649; 
  Reprint, 
  1872, 
  p. 
  135; 
  1866, 
  California 
  

  

  Acad. 
  Sci., 
  Proc, 
  vol. 
  Ill, 
  p. 
  212; 
  Cooper, 
  1867, 
  Geog. 
  Cat. 
  Moll., 
  Geol. 
  Sur. 
  California, 
  

  

  p. 
  22 
  

   Ischnochiton 
  gothicus 
  Carpenter, 
  Pilsbry, 
  1892, 
  Man. 
  Conch., 
  vol. 
  XIV, 
  p. 
  74 
  

   Trachvdcrmon 
  gothicus 
  Carpenter, 
  Pilsbry, 
  1893, 
  Man. 
  Conch., 
  vol. 
  XV, 
  p. 
  65, 
  pi. 
  15, 
  figs. 
  

  

  28,"29 
  type 
  plates 
  

   ? 
  Chaetoplcura 
  gothica 
  Carpenter, 
  Dall, 
  1921, 
  p. 
  193 
  Dendrochiton; 
  Oldroyd, 
  1927, 
  vol. 
  II, 
  

  

  pt. 
  Ill, 
  p. 
  290 
  section 
  Dendrochiton 
  

   Dendrochiton 
  gothicus 
  (Carpenter), 
  Berry, 
  1919, 
  California 
  Acad. 
  Sci., 
  Proc, 
  ser. 
  4, 
  vol. 
  

  

  IX, 
  p. 
  3, 
  4, 
  figs. 
  3, 
  4; 
  Smith 
  and 
  Gordon, 
  1948, 
  California 
  Acad. 
  Sci., 
  Proc, 
  ser. 
  4, 
  

  

  vol. 
  XXVI, 
  p. 
  206 
  doubts 
  Monterey 
  record 
  

   Mopalia 
  {Dendrochiton) 
  gothica 
  (Carpenter), 
  Burch, 
  1947, 
  no. 
  66, 
  p. 
  19 
  

  

  "Blunt 
  parallel 
  riblets 
  along 
  very 
  arched 
  back. 
  Sutural 
  lobes 
  united 
  in 
  sinus 
  : 
  eaves 
  not 
  

   spongy. 
  8-20 
  fm. 
  Cp." 
  [Carpenter, 
  1864b, 
  p. 
  649] 
  

   ". 
  . 
  . 
  State 
  Collection, 
  518a. 
  

  

  "Tr. 
  t. 
  parva 
  valde 
  elevata, 
  viridi, 
  rosaceo 
  et 
  olivaceo 
  eleganter 
  tincta 
  ; 
  valvis 
  gothice 
  

   arcuatis, 
  jugo 
  acuto; 
  areis 
  lateralibus 
  parvis, 
  arcuatiin 
  distincte 
  definitis, 
  granulosis; 
  umboni- 
  

   bus 
  promincntibus 
  ; 
  niarginibus 
  umbonalibus 
  colore 
  tcssellatis, 
  intortis; 
  areis 
  centralibus 
  

   longitudinaliter 
  costatis, 
  costis 
  rotundatis, 
  crebris, 
  baud 
  valde 
  expressis, 
  interstitiis 
  parvis, 
  

   vix 
  interdum 
  decussatis 
  ; 
  valv. 
  term, 
  ut 
  in 
  ar. 
  lat. 
  sculptis, 
  postica 
  mucrone 
  mediano, 
  subele- 
  

   vato 
  : 
  intus, 
  lobis 
  suturalibus 
  hand 
  separatis, 
  medio 
  latissime 
  sinuatis 
  ; 
  laminis 
  insertionis, 
  

   lat. 
  unifissatis, 
  term. 
  VIII-X. 
  — 
  fissatis, 
  obtusis, 
  subgrundis 
  baud 
  elevatis 
  : 
  limbo 
  pallii 
  minutis- 
  

   sime 
  squamuloso, 
  granulis 
  confertissimns, 
  subrotundatis, 
  laevibus 
  ; 
  circa 
  marginem 
  pilulis 
  

   suberectis. 
  

  

  "Long. 
  0.20, 
  lat. 
  0.10; 
  div. 
  80°. 
  

  

  "Hah. 
  Catalina 
  Island, 
  8-20 
  fm.. 
  Cooper." 
  [Carpenter, 
  1866a, 
  p. 
  212] 
  

  

  A 
  set 
  of 
  types 
  is 
  in 
  the 
  U. 
  S. 
  National 
  Museum, 
  and 
  one 
  is 
  in 
  the 
  Redpath 
  Museum. 
  

   Both 
  suites 
  are 
  on 
  the 
  original 
  glass 
  mounts 
  of 
  Carpenter 
  with 
  Carpenter's 
  original 
  label. 
  

   There 
  are 
  five 
  specimens 
  at 
  McGill 
  labelled, 
  "type 
  Catalina 
  Is. 
  St. 
  Barbara 
  Is. 
  Cooper." 
  

   The 
  specimen 
  in 
  the 
  U. 
  S. 
  National 
  Museum 
  consists 
  of 
  four 
  small 
  plates 
  with 
  a 
  label, 
  

   "Catalina 
  Id. 
  Cooper 
  type." 
  The 
  photograph 
  of 
  one 
  of 
  the 
  types 
  at 
  McGill 
  is 
  included. 
  It 
  may 
  

   be 
  verified 
  readily 
  with 
  the 
  original 
  drawings 
  of 
  plates 
  by 
  Carpenter 
  in 
  Pilsbry 
  pi. 
  15, 
  figs. 
  

   28, 
  29). 
  

  

  Berry 
  (1919) 
  pointed 
  out 
  distinguishing 
  features 
  of 
  this 
  species 
  which 
  was 
  then 
  little 
  

   known. 
  

  

  Oldroyd 
  republished 
  Pilsbry's 
  translation 
  of 
  Carpenter's 
  Latin 
  description. 
  

  

  Syntypes. 
  — 
  U. 
  S. 
  National 
  Museum, 
  no. 
  16271, 
  4 
  separate 
  plates; 
  Redpath 
  Museum, 
  no. 
  13 
  

  

  Distribution. 
  — 
  Recent. 
  Catalina 
  Island, 
  California 
  (type) 
  ; 
  Monterey 
  to 
  Catalina 
  Island 
  

   (Dall) 
  

  

  Genus 
  Basiliochiton 
  IScrry, 
  1918 
  

  

  Basiliochiton 
  Berry. 
  1918, 
  Nautilus, 
  vol. 
  32, 
  No. 
  1. 
  p. 
  12 
  

  

  Type 
  species 
  by 
  original 
  designation 
  Mopalia 
  hcathii 
  Pilsbry, 
  1898, 
  Acad. 
  Nat. 
  Sci. 
  Phila- 
  

   delphia, 
  Proc, 
  vol. 
  50, 
  p. 
  288. 
  Living. 
  Pacific 
  (irove, 
  California. 
  Berry, 
  1925, 
  Acad. 
  Nat. 
  

   Sci. 
  Philadelphia, 
  Proc, 
  vol. 
  77, 
  p. 
  25, 
  figs. 
  1, 
  2 
  (holotype). 
  (pi. 
  33, 
  fig. 
  14, 
  holotype) 
  

  

  Trachydermon 
  Carpenter 
  was 
  first 
  mentioned 
  (1864b, 
  p. 
  612) 
  with 
  two 
  species 
  Ischnochi- 
  

   ton 
  (Trachydermon) 
  pseudodcntirns 
  Carpenter 
  [= 
  Cyanopla.r 
  dentiens 
  (Gould).] 
  and 
  /. 
  (T.) 
  

   gotliicns 
  Carpenter, 
  "n.s." 
  

  

  