﻿270 
  MARINE 
  MOLr.USCA 
  DESCRIBED 
  BY 
  V. 
  V. 
  CARPENTER 
  

  

  The 
  following 
  line 
  sliould 
  be 
  added 
  to 
  Oldroyd's 
  copy 
  of 
  Carpenter 
  to 
  make 
  the 
  copy 
  

   complete 
  : 
  

  

  "Hab. 
  Catalina 
  Island, 
  20-30 
  fm., 
  Cooper." 
  [Carpenter, 
  1866a, 
  p. 
  211] 
  

  

  The 
  holotype 
  consists 
  of 
  separate 
  plates. 
  They 
  are 
  labelled 
  "Catalina 
  Id. 
  type 
  Cooper." 
  

  

  Ilolotypc. 
  — 
  U. 
  S. 
  National 
  ATuseum, 
  no. 
  16259 
  

   Distribution. 
  — 
  Catalina 
  Island, 
  California 
  (type) 
  

  

  Subgenus 
  Stenoplax 
  Dall, 
  1879 
  

  

  Stcnoplax 
  Dall, 
  U. 
  S. 
  Nat. 
  Mus., 
  Proc.. 
  vol. 
  I, 
  p. 
  296, 
  330 
  

  

  Type 
  species 
  by 
  original 
  designation, 
  5". 
  liiiiaciforiiiis 
  (Sowerby), 
  1832, 
  Zool. 
  Soc. 
  Lx)ndon, 
  

  

  Proc, 
  p. 
  26. 
  Recent. 
  Mazatlan 
  to 
  Lobos 
  Islands, 
  Peru. 
  Florida 
  Keys 
  and 
  West 
  Indies. 
  

  

  PiLSBRY, 
  1892, 
  Man. 
  Conch., 
  vol. 
  XIV, 
  pi. 
  16, 
  f^gs. 
  9-16 
  

  

  Ischnochiton 
  (Stenoplax) 
  acrior 
  Pilsbry 
  

  

  Ischnochitnn 
  (Stcnoplax) 
  acrior 
  Pilsrry, 
  1892, 
  Man. 
  Conch., 
  vol. 
  XIV, 
  p. 
  61, 
  pi. 
  14, 
  figs. 
  

   86-89 
  section 
  Stcnoradsia: 
  D.w.h, 
  1921, 
  p. 
  190 
  credited 
  to 
  Carpenter; 
  Oldroyd, 
  1927, 
  vol. 
  

   II, 
  pt. 
  Ill, 
  p. 
  268 
  credited 
  to 
  Carpenter 
  and 
  Pilsbry 
  

  

  The 
  specific 
  name 
  in 
  this 
  case 
  was 
  a 
  manuscript 
  name 
  of 
  Carpenter 
  used 
  by 
  Pilsbry, 
  but 
  

  

  the 
  description 
  and 
  holotype 
  were 
  of 
  Pilsbry. 
  Credit 
  should 
  be 
  to 
  Pilsbry. 
  It 
  is 
  included 
  

  

  herein 
  only 
  for 
  completeness 
  in 
  references 
  to 
  Carpenter 
  ms. 
  names. 
  

   Holotype. 
  — 
  Academy 
  of 
  Natural 
  Sciences, 
  Philadelphia, 
  no. 
  35702 
  

   Distribution. 
  — 
  Recent. 
  Point 
  Abreojos, 
  Lower 
  California 
  (type, 
  from 
  label 
  with 
  type. 
  

  

  Academy 
  of 
  Natural 
  Sciences, 
  Philadelphia) 
  ; 
  San 
  Miguel 
  Island, 
  California, 
  to 
  Gulf 
  of 
  

  

  California 
  (Dall). 
  Pleistocene. 
  California 
  (Berry, 
  1922) 
  

  

  Ischnochiton 
  (Stenoplax) 
  conspicuus 
  "(Dall)" 
  Pilsbry 
  

   (PI. 
  35, 
  figs. 
  1, 
  2) 
  

  

  Mauqcrclla 
  conspicua 
  "Cpr," 
  Dall, 
  1879, 
  U. 
  S. 
  Nat. 
  Mus., 
  Proc, 
  vol. 
  1, 
  p. 
  296, 
  pi. 
  II, 
  

   fig. 
  11 
  

  

  Chiton 
  (Maugerella) 
  conspicua 
  "Cpr.," 
  Dall 
  in 
  Orcutt, 
  1886, 
  U. 
  S. 
  Nat. 
  Mus., 
  Proc, 
  

   vol. 
  8, 
  p. 
  544 
  name 
  only 
  

  

  Ischnochiton 
  (Stenoplax) 
  conspicuus 
  Pilsbry, 
  1892, 
  Alan. 
  Conch., 
  vol. 
  XIV, 
  p. 
  63, 
  section 
  

   Stcnoradsia, 
  pi. 
  15, 
  figs. 
  91-96, 
  Carpenter 
  ms. 
  name 
  and 
  var. 
  solidus, 
  p. 
  64, 
  pi. 
  15, 
  fig. 
  97; 
  

   Dall, 
  1921, 
  p. 
  190 
  credit 
  to 
  Carpenter 
  (conspicuus) 
  ; 
  Berry, 
  1922, 
  California 
  Acad. 
  Sci., 
  

   Proc, 
  ser. 
  4, 
  vol. 
  XI, 
  p. 
  465, 
  pi. 
  VIII, 
  figs. 
  1-9 
  see 
  for 
  additional 
  references; 
  Dall, 
  1925, 
  

   U. 
  S. 
  Nat. 
  Mus., 
  Proc, 
  vol. 
  66, 
  no. 
  2554, 
  p. 
  18, 
  pi. 
  18. 
  fig. 
  7 
  conspicuus; 
  Oldroyd, 
  1927, 
  

   vol. 
  IT, 
  pt. 
  Ill, 
  p. 
  270; 
  BuRCH, 
  1947, 
  no. 
  66, 
  p. 
  18; 
  1947, 
  no. 
  68, 
  p. 
  6; 
  Smith 
  and 
  Gordon, 
  

   1948, 
  California 
  Acad. 
  Sci., 
  Proc, 
  ser. 
  4, 
  vol. 
  XXVI, 
  p. 
  207 
  Dall 
  as 
  author, 
  doubtful 
  

   record 
  for 
  Monterey 
  

  

  Ischnocliiton 
  (Maugerella) 
  conspicuus 
  (Carpenter), 
  Stearns, 
  1901, 
  Nautilus, 
  vol. 
  15, 
  no. 
  5, 
  

   p. 
  53 
  

  

  Ischnochiton 
  conspicjius 
  (Carpenter) 
  Chace, 
  1917, 
  Nautilus, 
  vol. 
  31, 
  no. 
  2, 
  p. 
  37 
  and 
  forma 
  

   solidus 
  Cpr. 
  

  

  Ischnochiton 
  (Stcnoradsia) 
  conspicuus 
  Carpenter, 
  Batly, 
  1935, 
  West 
  Coast 
  Shells 
  (Keep), 
  

   p. 
  29 
  

  

  "Minor 
  lateral 
  bi-alate. 
  top 
  of 
  inner 
  wing 
  and 
  shaft 
  bent 
  into 
  a 
  twisted 
  cusp 
  with 
  a 
  .small 
  

   process 
  extending 
  outward 
  from 
  the 
  apex 
  of 
  the 
  shaft 
  ; 
  major 
  lateral 
  tridentate, 
  shaft 
  with 
  a 
  

   keel 
  and 
  cuspidate 
  process." 
  [Dall, 
  1879, 
  p. 
  296 
  dentition] 
  

  

  Whether 
  this 
  species 
  must 
  be 
  credited 
  to 
  Dall 
  or 
  to 
  Pilsbry 
  is 
  a 
  technical 
  question. 
  Cer- 
  

   tainly 
  Carpenter 
  is 
  not 
  the 
  author, 
  for 
  both 
  Dall 
  and 
  Pilsbry 
  used 
  Carpenter's 
  ms. 
  name. 
  

   Dall 
  (1879) 
  first 
  used 
  the 
  name 
  as 
  that 
  of 
  the 
  type 
  species 
  of 
  Maugerella, 
  also 
  a 
  ms. 
  name 
  of 
  

   Carpenter's. 
  Dall 
  described 
  and 
  figured 
  only 
  the 
  dentition 
  of 
  the 
  radula 
  of 
  the 
  species. 
  Pilsbry 
  

   gave 
  a 
  detailed 
  description 
  of 
  the 
  shell 
  and 
  illustrated 
  the 
  same 
  with 
  several 
  drawings, 
  two 
  

   of 
  W'hich 
  were 
  made 
  for 
  Carpenter. 
  

  

  If 
  Pilsbry 
  is 
  regarded 
  as 
  the 
  author 
  the 
  holotype 
  of 
  the 
  species 
  is 
  no. 
  35709,^^^ 
  Academy 
  

   of 
  Natural 
  Sciences, 
  Philadelphia, 
  collected 
  by 
  Henry 
  Hemphill 
  from 
  San 
  Diego. 
  It 
  is 
  prob- 
  

   ably 
  the 
  specimen 
  figured 
  by 
  Pilsbry 
  (pi, 
  15, 
  figs. 
  91-93, 
  96). 
  

  

  136 
  Not 
  35704 
  as 
  in 
  Oldroyd 
  (1927, 
  p. 
  270). 
  

  

  