﻿NO. 
  1959. 
  SIPUNCULID8 
  OF 
  EASTERN 
  NORTH 
  AMERICA— 
  OEROULD. 
  409 
  

  

  than 
  in 
  the 
  typical 
  Ph. 
  csementarium 
  (=stromhi). 
  The 
  papillse 
  of 
  the 
  

   anterior 
  part 
  of 
  the 
  body 
  are 
  more 
  prominent, 
  the 
  skin 
  is 
  darker, 
  

   thicker, 
  and 
  more 
  opaque, 
  and 
  Verrill 
  found 
  no 
  hooks 
  upon 
  the 
  intro- 
  

   vert. 
  The 
  habitat 
  of 
  the 
  form 
  is 
  "Off 
  Casco 
  Bay, 
  60 
  to 
  94 
  fathoms; 
  

   near 
  St. 
  George's 
  Bank, 
  85 
  to 
  150 
  fathoms." 
  

  

  A 
  part 
  of 
  the 
  specimens 
  that 
  I 
  have 
  exammed 
  from 
  Casco 
  Bay 
  and 
  

   the 
  most 
  of 
  those 
  from 
  around 
  Cape 
  Ann 
  correspond 
  to 
  Verrill's 
  

   description, 
  except 
  that, 
  like 
  other 
  varieties 
  of 
  Ph. 
  stromhi, 
  they 
  have 
  

   a 
  zone 
  of 
  hooks 
  upon 
  the 
  introvert. 
  The 
  well-known 
  fact 
  that 
  the 
  

   hooks 
  of 
  the 
  introvert 
  are 
  deciduous 
  in 
  some 
  sipunculids 
  makes 
  the 
  

   presence 
  or 
  absence 
  of 
  hooks, 
  however, 
  of 
  little 
  moment. 
  

  

  PHASCOLION 
  STROMBI 
  var. 
  FUSCA, 
  new 
  variety. 
  

  

  The 
  dark-colored, 
  markedly 
  papillate 
  variety 
  just 
  described 
  is 
  by 
  

   no 
  means 
  sharj^ly 
  differentiated 
  from 
  the 
  common 
  widely 
  spread 
  form 
  

   with 
  smoother 
  skm 
  (particularly 
  at 
  the 
  posterior 
  end 
  of 
  the 
  body) 
  

   and 
  usually 
  of 
  a 
  light 
  yellowish-brown 
  or 
  orange 
  color. 
  This 
  com- 
  

   mon 
  form 
  is 
  found 
  from 
  Labrador 
  southward 
  at 
  least 
  as 
  far 
  as 
  Point 
  

   Judith 
  and 
  the 
  deeper 
  water 
  along 
  the 
  edge 
  of 
  the 
  continental 
  shelf 
  

   near 
  the 
  fortieth 
  parallel 
  (stations 
  793, 
  871, 
  895, 
  1093). 
  It 
  is 
  found 
  

   at 
  intervals 
  between 
  these 
  extreme 
  localities 
  and 
  even 
  in 
  the 
  same 
  

   general 
  region 
  where 
  the 
  swarthy 
  variety, 
  tuhicola, 
  occurs. 
  Thus 
  

   specimens 
  from 
  near 
  the 
  Isles 
  of 
  Shoals 
  (stations 
  44B 
  and 
  76B) 
  and 
  

   off 
  Nahant 
  (station 
  30) 
  have 
  the 
  color 
  and 
  other 
  features 
  of 
  the 
  

   typical 
  form, 
  except 
  that 
  the 
  papillse 
  at 
  the 
  posterior 
  end 
  of 
  the 
  

   trunk 
  and 
  elsewhere 
  are 
  prominent, 
  just 
  as 
  in 
  individuals 
  of 
  the 
  

   variety 
  tuhicola 
  from 
  the 
  neighboring 
  Cape 
  Ann 
  region. 
  

  

  Type.— 
  C&t. 
  No. 
  8373, 
  U.S.N.M. 
  From 
  Gulf 
  of 
  Maine, 
  str. 
  

   Bache, 
  1873. 
  

  

  PHASCOLION 
  STROMBI 
  var. 
  ALBA, 
  nevsr 
  variety. 
  

  

  It 
  is 
  obvious 
  that 
  the 
  kind 
  of 
  shell 
  or 
  tube 
  ui 
  which 
  individuals 
  of 
  

   this 
  species 
  live 
  has 
  much 
  to 
  do 
  in 
  determining 
  their 
  extraordinarily 
  

   variable 
  appearance. 
  Thus 
  a 
  well-marked 
  form 
  which 
  may 
  be 
  

   described 
  as 
  variety 
  alha 
  is 
  found 
  in 
  small 
  gasteropod 
  shells 
  in 
  the 
  

   shallow 
  waters 
  about 
  Woods 
  Hole, 
  the 
  Elizabeth 
  Islands, 
  Point 
  Judith 
  

   (station 
  799, 
  13 
  fathoms), 
  and 
  off 
  Block 
  Island 
  (station 
  815, 
  15 
  

   fathoms). 
  

  

  Specimens 
  of 
  this 
  variety 
  are 
  about 
  two-thirds 
  the 
  size 
  of 
  the 
  

   typical 
  form, 
  with 
  a 
  trunk 
  10 
  mm. 
  in 
  length 
  and 
  introvert 
  15-20 
  mm., 
  

   for 
  example. 
  The 
  color 
  is 
  white 
  or 
  gray. 
  The 
  surface 
  of 
  the 
  body 
  

   is 
  remarkably 
  smooth, 
  especially 
  at 
  the 
  posterior 
  end, 
  where 
  the 
  

   minute, 
  slender, 
  conical 
  papillse 
  are 
  hardly 
  visible 
  vnih 
  a 
  hand 
  lens 
  

   magnifying 
  10 
  diameters. 
  The 
  nipple-shaped 
  papillEe 
  upon 
  the 
  base 
  

   of 
  the 
  introvert 
  and 
  the 
  adjacent 
  part 
  of 
  the 
  trunk 
  are 
  visible 
  with 
  a 
  

   lens, 
  but 
  the 
  conical 
  papillse 
  upon 
  the 
  introvert 
  are 
  exceedingly 
  

   minute. 
  A 
  broad 
  zone 
  immediately 
  behind 
  the 
  tentacles 
  is 
  studded 
  

  

  