﻿196 
  MARINE 
  MOLL 
  use 
  A 
  DESCRIBED 
  BY 
  P. 
  V. 
  CARPENTER 
  

  

  Line 
  1: 
  read 
  "tercti" 
  for 
  "terte;" 
  Hue 
  3: 
  delete 
  "supra 
  sutiiram 
  retrorsum" 
  and 
  insert 
  in 
  

   place 
  "et 
  apertura 
  valde 
  prolongatis." 
  

   Add: 
  

  

  ". 
  . 
  . 
  div. 
  20°. 
  

  

  "Hab. 
  Monterey; 
  Cooper. 
  

  

  "Closely 
  allied 
  to 
  Lciostraca 
  producta, 
  Cpr. 
  Maz. 
  Cat. 
  no. 
  551, 
  but 
  displays 
  no 
  varices. 
  

   The 
  Eulimidae 
  are 
  very 
  difficult 
  to 
  distinguish, 
  from 
  a 
  few 
  shells 
  alone." 
  [Carpenter, 
  1866a, 
  

   p. 
  221] 
  

  

  Bartsch 
  gave 
  a 
  complete 
  discussion 
  and 
  illustration 
  of 
  the 
  shell 
  of 
  this 
  species. 
  The 
  holo- 
  

   type 
  is 
  labelled 
  "Monterey." 
  

  

  Dimensions. 
  — 
  Length 
  6.8 
  mm.; 
  diameter, 
  1.9 
  mm. 
  (holotypc, 
  Bartsch). 
  

  

  Holotype. 
  — 
  U. 
  S. 
  National 
  Museum, 
  no. 
  14928 
  

  

  Distribution. 
  — 
  Recent. 
  Monterey, 
  California 
  (type) 
  ; 
  Forrester 
  Island, 
  .Maska, 
  to 
  Mag- 
  

   dalena 
  Bay, 
  Lower 
  California 
  (Burch). 
  Pleistocene. 
  California 
  (Bartsch; 
  Berry) 
  

  

  Balcis 
  thersites 
  (Carpenter) 
  

  

  EuUma 
  Thersites 
  Carpenter, 
  1864b, 
  p. 
  537, 
  659 
  small 
  "t" 
  ; 
  Reprint, 
  1872, 
  p. 
  2Z, 
  145; 
  1865, 
  

  

  Ann. 
  Mag. 
  Nat. 
  Hist., 
  ser. 
  3, 
  vol. 
  XV, 
  p. 
  396; 
  Reprint 
  1872, 
  p. 
  286; 
  Cooper, 
  1867. 
  Geog. 
  

  

  Cat. 
  Moll., 
  Geol. 
  Sur. 
  California, 
  p. 
  34; 
  1870, 
  Amer. 
  Jour. 
  Conch., 
  vol. 
  VI, 
  p. 
  67; 
  Trvon, 
  

  

  1886, 
  Man. 
  Conch., 
  vol. 
  VIII, 
  p. 
  278 
  

   Eulima 
  thersites 
  Vanatta, 
  1899, 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  Proc, 
  vol. 
  51, 
  p. 
  255 
  

   Eulima 
  lozvei 
  Vanatta, 
  1899, 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  Proc, 
  vol. 
  51, 
  p. 
  254, 
  pi. 
  XI, 
  figs. 
  

  

  9, 
  10 
  fide 
  Bartsch, 
  1917, 
  U. 
  S. 
  Nat. 
  Mus., 
  Proc, 
  vol. 
  53, 
  no. 
  2207, 
  p. 
  323 
  

   Eulima 
  bistorta 
  Vanatta, 
  1899, 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  Proc, 
  vol. 
  51, 
  pi. 
  XI, 
  figs. 
  7, 
  

  

  8 
  fide 
  Bartsch, 
  1917 
  

   Melanella 
  (Balcis) 
  thcr.ntcs 
  (Carpenter), 
  Bartsch, 
  1917, 
  U. 
  S. 
  Nat. 
  Mus., 
  Proc, 
  vol. 
  53, 
  

  

  no. 
  2207, 
  p. 
  323, 
  pi. 
  41, 
  figs. 
  1-3 
  (2 
  types) 
  ; 
  Ball, 
  1921, 
  p. 
  117; 
  Oldroyd, 
  1927, 
  vol. 
  II, 
  pt. 
  

  

  II, 
  p. 
  70, 
  pi. 
  47, 
  fig. 
  2 
  type 
  copy 
  Bartsch, 
  1917, 
  also 
  E. 
  lotvci 
  fig. 
  1 
  and 
  bistorta 
  fig. 
  3 
  ty])es 
  

   Melanella 
  thersites 
  (Carpenter), 
  Grant 
  and 
  Gale, 
  1931, 
  p. 
  862; 
  Baily, 
  1935, 
  West 
  Coast 
  

  

  Shells 
  (Keep), 
  p. 
  181 
  and 
  subspecies 
  bistorta 
  Vanatta; 
  Keen, 
  1937, 
  p. 
  40 
  

   Balcis 
  thersites 
  (Carpenter), 
  Burch, 
  1945, 
  no. 
  53, 
  p. 
  7, 
  9; 
  Smith 
  and 
  Gordon, 
  1948, 
  Cali- 
  

   fornia 
  Acad. 
  Sci., 
  Proc, 
  vol. 
  XXVI, 
  no. 
  8, 
  p. 
  192 
  

   Balcis 
  {Vitreolina) 
  thersites 
  (Carpenter), 
  Berry, 
  1954, 
  Bull. 
  Amer. 
  Paleont., 
  vol. 
  35, 
  no. 
  

  

  151, 
  p. 
  4 
  

  

  "Very 
  broad, 
  short, 
  twisted." 
  [Carpenter, 
  1864b, 
  p. 
  659] 
  

  

  Oldroyd 
  (1927) 
  republished 
  Carpenter's 
  original 
  description 
  of 
  this 
  species. 
  The 
  follow- 
  

   ing 
  changes 
  should 
  be 
  made 
  in 
  her 
  copy 
  : 
  

   Delete 
  "poll." 
  

   Add: 
  

  

  ". 
  . 
  . 
  div. 
  40°. 
  

  

  "Hab. 
  Sta. 
  Barbara, 
  1 
  specimen 
  (Jewett). 
  

  

  "Preeminent 
  for 
  aberration 
  among 
  the 
  distorted 
  Eulimidae. 
  A 
  second 
  specimen 
  occurred 
  

   from 
  an 
  uncertain 
  source." 
  [Carpenter, 
  1865h, 
  p. 
  396] 
  

  

  Bartsch 
  fully 
  discussed 
  this 
  species 
  and 
  illustrated 
  the 
  holotype. 
  He 
  also 
  figured 
  the 
  types 
  

   of 
  B. 
  lowei 
  (Vanatta) 
  and 
  B. 
  bistorta 
  (Vanatta) 
  which 
  he 
  regarded 
  as 
  synonymous 
  with 
  

   Carpenter's 
  species. 
  The 
  holotypes 
  of 
  Vanatta's 
  species 
  are 
  from 
  Long 
  Beach 
  and 
  Monterey, 
  

   California, 
  respectively. 
  

  

  The 
  three 
  forms 
  as 
  illustrated 
  by 
  their 
  types 
  show 
  different 
  degrees 
  of 
  flexing 
  and 
  thick- 
  

   ness 
  of 
  the 
  callus 
  of 
  the 
  lips. 
  

  

  Dimensions. 
  — 
  Length 
  5.1 
  mm.; 
  diameter 
  2.5 
  mm. 
  (holotype, 
  Bartsch) 
  

  

  Holotype. 
  — 
  U. 
  S. 
  National 
  Museum, 
  no. 
  11795 
  

  

  Distribution. 
  — 
  Recent. 
  Santa 
  Barbara, 
  California 
  (type) 
  ; 
  Monterey, 
  California, 
  to 
  San 
  

   Gernonimo 
  Island, 
  Lower 
  California 
  (Dall). 
  Pleistocene. 
  California 
  (Oldroyd, 
  1925; 
  Grant 
  

   and 
  Gale; 
  Berry) 
  ; 
  Mexico 
  (Jordan, 
  1926) 
  

  

  