﻿NO. 
  1959. 
  SIPVNCULIDS 
  OF 
  EASTERN 
  NORTH 
  AMERICA— 
  GEROULD. 
  391 
  

  

  pair 
  of 
  prominent 
  pigmented 
  eyes 
  lie 
  within 
  the 
  brain 
  near 
  its 
  ante- 
  

   rior, 
  dorsal, 
  and 
  lateral 
  surfaces. 
  They 
  consist 
  of 
  the 
  pigmented 
  

   posterior 
  extremities 
  of 
  a 
  pair 
  of 
  slender, 
  cylindrical 
  ocular 
  tubes, 
  

   which 
  run 
  forward 
  to 
  the 
  lateral 
  surfaces 
  of 
  an 
  oval 
  epidermal 
  pro- 
  

   tuberance 
  in 
  front 
  of 
  the 
  brain, 
  the 
  cerebral 
  organ. 
  . 
  This 
  organ 
  lies 
  

   dorsal 
  to 
  the 
  buccal 
  region 
  and 
  anterior 
  to 
  the 
  ciliated 
  nuchal 
  organ. 
  

   The 
  ocular 
  tubes 
  are 
  filled 
  with 
  a 
  transparent, 
  homogeneous 
  material 
  

   (fluid 
  or 
  semifluid) 
  which 
  does 
  not 
  readily 
  stain, 
  in 
  the 
  midst 
  of 
  which 
  

   lies 
  a 
  long, 
  spindle-shaped, 
  refractive 
  cone, 
  which 
  stains 
  readily 
  with 
  

   fuchsiu. 
  Its 
  chief 
  axis 
  coincides 
  with 
  that 
  of 
  the 
  tube. 
  

  

  The 
  intestine 
  consists 
  of 
  about 
  26 
  whorls. 
  It 
  is 
  of 
  wide 
  caliber, 
  

   and 
  terminates 
  in 
  a 
  long, 
  straight 
  rectum. 
  A 
  large 
  simple 
  Polian 
  

   vessel 
  runs 
  the 
  length 
  of 
  the 
  esophagus 
  upon 
  its 
  dorsal 
  side. 
  

  

  PJiascolosoma 
  verrillii, 
  which 
  has 
  a 
  southern 
  range, 
  resembles 
  Ph. 
  

   pellucidum 
  Keferstein 
  {=Ph. 
  riiseii 
  Keferstein) 
  in 
  its 
  proportions, 
  

   in 
  internal 
  structure, 
  including 
  the 
  presence 
  of 
  pigmented 
  eye-spots, 
  

   but 
  the 
  skin 
  is 
  not 
  so 
  thin 
  as 
  in 
  the 
  latter, 
  and 
  the 
  papillae 
  are 
  per- 
  

   haps 
  not 
  so 
  slender 
  and 
  spine-like. 
  PJi. 
  pellucidum 
  from 
  St. 
  Thomas 
  

   (Antilles) 
  measures, 
  according 
  to 
  Keferstein, 
  trunk 
  45 
  mm., 
  introvert 
  

   23 
  mm.; 
  the 
  bookless 
  individuals 
  which 
  Keferstein 
  calls 
  Ph. 
  riiseii 
  

   measure, 
  trunk 
  40 
  mm. 
  and 
  introvert 
  20 
  mm., 
  so 
  that 
  this 
  species 
  is 
  

   more 
  than 
  twice 
  as 
  long 
  as 
  Ph. 
  verrillii. 
  

  

  Professor 
  Verrill 
  (1873) 
  mentions 
  this 
  form 
  in 
  his 
  Report 
  on 
  the 
  

   Invertebrate 
  Animals 
  of 
  Vineyard 
  Sound, 
  page 
  333 
  [627] 
  as 
  "A 
  species 
  

   similar 
  to 
  the 
  last 
  [Ph. 
  csementarium] 
  in 
  size 
  and 
  form, 
  with 
  a 
  thick 
  

   integument, 
  thickly 
  covered 
  throughout 
  with 
  small 
  rounded 
  papillae 
  

   or 
  gi'anules, 
  but 
  without 
  the 
  dark 
  chitinous 
  hooks 
  seen 
  on 
  the 
  poste- 
  

   rior 
  part 
  of 
  the 
  latter." 
  He 
  possibly 
  refers 
  to 
  it 
  again 
  on 
  page 
  59 
  

   [353] 
  under 
  the 
  ''Fauna 
  of 
  the 
  sandy 
  shores 
  of 
  the 
  bays 
  and 
  sounds." 
  

   It 
  appears 
  to 
  have 
  been 
  found 
  with 
  Ph. 
  gouldii 
  in 
  the 
  sand 
  at 
  low* 
  

   water, 
  evidently 
  by 
  digging. 
  Again 
  on 
  page 
  122 
  [416] 
  it 
  is 
  mentioned 
  

   as 
  occurring 
  with 
  Ph. 
  csementariu7n 
  on 
  gravelly 
  and 
  shelly 
  bottoms. 
  

  

  Since 
  Professor 
  Verrill 
  thus 
  briefly 
  described 
  this 
  species 
  it 
  is 
  

   appropriately 
  known 
  as 
  Ph. 
  verrillii, 
  in 
  recognition 
  of 
  the 
  large 
  con- 
  

   tributions 
  to 
  science 
  of 
  this 
  veteran 
  naturalist 
  and 
  distinguished 
  

   pioneer 
  of 
  American 
  zoology. 
  

  

  PHASCOLOSOMA 
  FLAGRIFTSRUM 
  Selenka. 
  

  

  Station 
  2566, 
  latitude 
  of 
  Cape 
  Charles, 
  Vu-ginia, 
  37° 
  23' 
  N.; 
  long. 
  

   68° 
  08' 
  W.; 
  2,620 
  fathoms; 
  bottom 
  temperature, 
  36.4°; 
  gray 
  ooze. 
  

   Tw^o 
  specimens. 
  

  

  Previous 
  records 
  : 
  

  

  Selenka 
  (1885), 
  Challenger, 
  station 
  44, 
  lat. 
  37° 
  25' 
  N.; 
  long. 
  71° 
  40' 
  

   W.; 
  1,700 
  fathoms; 
  bottom 
  temperature, 
  36.2°; 
  blue 
  mud; 
  also 
  from 
  

   the 
  Pacific 
  Ocean, 
  Challenger 
  station 
  241, 
  lat. 
  35° 
  41' 
  N.; 
  long. 
  157° 
  

   42' 
  E.; 
  2,300 
  fathoms; 
  bottom 
  temperature, 
  35.1°; 
  red 
  clay. 
  

  

  