﻿MARINE 
  POLYCHAETE 
  WORMS 
  — 
  PETTIBONE 
  261 
  

  

  rest 
  of 
  dorsal 
  cii-ri 
  shorter 
  thaii 
  body 
  width, 
  tapering 
  gradually. 
  

   Tentacular 
  segment 
  with 
  wide, 
  short, 
  crescent-shaped 
  collar 
  or 
  nuchal 
  

   fold 
  covering 
  posterior 
  part 
  of 
  prostomium, 
  may 
  be 
  inconspicuous 
  

   and 
  protruding 
  or 
  rather 
  low, 
  somewhat 
  contracted. 
  Composite 
  

   setae 
  similar 
  throughout, 
  with 
  distal 
  blades 
  short, 
  difTering 
  only 
  

   slightly 
  in 
  length. 
  Chitinous 
  lining 
  of 
  proboscis 
  light 
  or 
  dark 
  gray 
  

   or 
  light 
  amber-colored; 
  dorsal 
  tooth 
  dark 
  bluish 
  gray; 
  circular 
  margin 
  

   finely 
  denticled. 
  Epitokous 
  female 
  (Elson 
  Lagoon, 
  August 
  6, 
  1948) 
  

   with 
  large 
  eggs 
  massed 
  in 
  most 
  of 
  body 
  segments, 
  consisting 
  of 
  16 
  

   anterior 
  unmodified 
  setigers, 
  25 
  setigers 
  with 
  long 
  swimming 
  setae, 
  

   and 
  5 
  unmodified 
  setigers 
  (swimming 
  setae 
  begin 
  on 
  setiger 
  13 
  — 
  

   Wesenberg-Lund, 
  1947). 
  Color: 
  In 
  alcohol: 
  Colorless 
  or 
  tannish, 
  

   slightly 
  greenish 
  anteriorly. 
  In 
  life: 
  Orange 
  or 
  yellowish. 
  May 
  form 
  

   definite 
  hardened 
  mucous 
  tubes. 
  Luminescent. 
  

  

  Remarks. 
  — 
  The 
  type 
  of 
  Typosyllis 
  coUaris 
  Hartman 
  (1948) 
  was 
  

   examined 
  and 
  is 
  herein 
  referred 
  to 
  E. 
  hlomstrandi; 
  the 
  dorsal 
  cirri 
  

   are 
  not 
  distinctly 
  annulated 
  throughout 
  the 
  body 
  as 
  they 
  would 
  be 
  

   in 
  a 
  Typosyllis. 
  There 
  is 
  nothing 
  in 
  Verrill's 
  description 
  of 
  E. 
  phos- 
  

   phorea, 
  dredged 
  from 
  St. 
  George's 
  Bank, 
  to 
  distinguish 
  it 
  from 
  E. 
  

   hlomstrandi; 
  according 
  to 
  Hartman 
  (1942, 
  p. 
  7) 
  the 
  type 
  is 
  unsatis- 
  

   factory. 
  

  

  New 
  records. 
  — 
  Arctic 
  Alaska: 
  Eluitkak 
  Pass, 
  Elson 
  Lagoon 
  near 
  

   Point 
  Barrow, 
  6.6 
  fms.; 
  Point 
  Barrow 
  base, 
  washed 
  ashore; 
  off 
  Point 
  

   Barrow 
  base, 
  13.3-123.5 
  fms., 
  up 
  to 
  15 
  miles 
  from 
  shore, 
  on 
  bottoms 
  

   of 
  stones, 
  masses 
  of 
  worm 
  tubes, 
  and 
  various 
  combinations 
  of 
  mud, 
  

   pebbles, 
  gravel, 
  stones, 
  rocks, 
  large 
  perforated 
  rocks, 
  with 
  worm 
  tubes, 
  

   bryozoans, 
  hydroids, 
  shells, 
  and 
  on 
  female 
  crab 
  Hyas 
  coarctatus 
  alu- 
  

   taceus 
  (24 
  stations, 
  175 
  specimens). 
  Bering 
  Sea: 
  Eobert 
  White, 
  

   1879. 
  West 
  Coast 
  North 
  America 
  : 
  Washmgton 
  and 
  Puget 
  Sounds, 
  

   20-46 
  fms., 
  Pettibone. 
  East 
  Coast 
  North 
  America: 
  Off 
  Labrador, 
  

   15-30 
  fms.. 
  Blue 
  Dolphin 
  Expeditions, 
  1949, 
  1951. 
  

  

  Distribution. 
  — 
  Widely 
  distributed 
  in 
  the 
  Arctic: 
  Siberian 
  and 
  

   Alaskan 
  Arctic, 
  West 
  Greenland, 
  Spitsbergen, 
  Franz 
  Josef 
  Land, 
  

   Barents 
  Sea, 
  Novaya 
  Zemlya, 
  Kara 
  Sea. 
  Also 
  Iceland, 
  Faroes, 
  Ire- 
  

   land 
  to 
  Madeira, 
  Mediterranean; 
  Labrador 
  to 
  Maine; 
  Bering 
  Sea 
  to 
  

   Wasliington; 
  north 
  Japan 
  Sea. 
  In 
  low 
  water 
  to 
  444 
  fathoms; 
  epitokes 
  

   at 
  surface. 
  

  

  Eusyllis 
  magnifica 
  (Moore, 
  1906) 
  

  

  Pionosyllis 
  magnifica 
  Moore, 
  1906b, 
  p. 
  223, 
  pi. 
  10, 
  figs. 
  9-11; 
  1908, 
  p. 
  325.— 
  

   Annenkova, 
  1938, 
  p. 
  152. 
  

  

  Description.— 
  Atokous 
  specimen 
  52 
  mm. 
  long, 
  2.5 
  mm. 
  in 
  greatest 
  

   width 
  without 
  setae, 
  152 
  segments 
  (in 
  pieces, 
  complete?). 
  Epitokous 
  

   specimen 
  (18 
  fathoms, 
  September 
  16, 
  1948) 
  broken 
  up 
  and 
  not 
  quite 
  

   complete, 
  with 
  larger 
  eyes, 
  consisting 
  of 
  161 
  segments, 
  99 
  mm. 
  long. 
  

  

  