﻿MARINE 
  POLYCHAETE 
  WORMS 
  — 
  PETTIBONE 
  305 
  

  

  Key 
  to 
  the 
  species 
  of 
  Nicomache 
  from 
  Point 
  Barrow 
  

  

  1. 
  Single 
  achaetous 
  antanal 
  segment 
  (fig. 
  34, 
  k) 
  N. 
  personata 
  

  

  Two 
  achaetous 
  antanal 
  segments 
  (fig. 
  34, 
  j) 
  N. 
  lumbricalis 
  

  

  Nicomache 
  lumbricalis 
  (Fabricius, 
  1780) 
  

  

  Figure 
  34, 
  i, 
  j 
  

  

  Sabella 
  lumbricalis 
  Fabricius, 
  1780, 
  p. 
  374. 
  

  

  Nicomache 
  lumbricalis 
  Malmgren, 
  1867, 
  p. 
  99, 
  pi. 
  10, 
  fig. 
  60. 
  — 
  Webster 
  and 
  

   Benedict, 
  1884, 
  p. 
  731; 
  1887, 
  p. 
  745.— 
  Arwidsson, 
  1907, 
  p. 
  86, 
  pi. 
  8, 
  figs. 
  

   244, 
  245.— 
  Fauvel, 
  1927, 
  p. 
  190, 
  fig. 
  66, 
  a-i.— 
  Augener, 
  1928, 
  p. 
  764.— 
  Monro, 
  

   1930, 
  p. 
  173.— 
  Annenkova, 
  1934, 
  p. 
  322; 
  1937, 
  p. 
  181; 
  1938, 
  p. 
  193.— 
  Hartman, 
  

   1944a, 
  pp. 
  335, 
  342; 
  1948, 
  p. 
  42.— 
  Zatsepin, 
  1948, 
  p. 
  144, 
  pi. 
  26, 
  fig. 
  1.— 
  

   Wesenberg-Lund, 
  1948, 
  p. 
  23, 
  figs. 
  10, 
  11; 
  1950a, 
  p. 
  41; 
  1950b, 
  p. 
  95; 
  1951, 
  

   p. 
  90.— 
  Berkeley 
  and 
  Berkeley, 
  1952, 
  p. 
  54, 
  figs. 
  Ill, 
  112. 
  

  

  Nicomache 
  carinaia 
  Moore, 
  1906b, 
  p. 
  242, 
  pi. 
  11, 
  figs. 
  36-39, 
  pi. 
  12, 
  figs. 
  43, 
  44; 
  

   1923, 
  p. 
  227. 
  

  

  Nicomache 
  lumbricalis 
  var. 
  borealis 
  Arwidsson, 
  1907, 
  p. 
  94, 
  figs.; 
  1922, 
  p. 
  6. 
  — 
  

   Eliason, 
  1920, 
  p. 
  65. 
  

  

  Description. 
  — 
  Length 
  40-60 
  mm., 
  width 
  2.5-3 
  mm., 
  setigerous 
  

   segments 
  21-22, 
  two 
  short 
  achaetous 
  antanal 
  segments 
  (Point 
  Barrow 
  

   and 
  Labrador 
  specimens 
  with 
  22 
  setigers; 
  type 
  of 
  N. 
  carinaia 
  with 
  21 
  ; 
  

   up 
  to 
  160 
  mm. 
  long, 
  5 
  mm. 
  wide 
  — 
  Fauvel, 
  1927). 
  Prostomium 
  with- 
  

   out 
  ocelli; 
  nuchal 
  organs 
  S-shaped. 
  Pygidial 
  funnel 
  with 
  14-30 
  

   subequal, 
  pointed, 
  triangular 
  papillae. 
  Color: 
  In 
  alcohol: 
  Reddish 
  

   brown 
  on 
  sides 
  and 
  dorsal 
  surface 
  of 
  head 
  and 
  first 
  three 
  setigers. 
  

   Tube: 
  Sandy, 
  with 
  small 
  pieces 
  of 
  rock, 
  with 
  smooth 
  membranous 
  

   lining 
  (Point 
  Barrow), 
  or 
  thick, 
  sandy, 
  and 
  coiled 
  (Labrador; 
  small 
  

   ones 
  on 
  terebeUid 
  tubes) 
  . 
  

  

  Remarks. 
  — 
  They 
  may 
  share 
  their 
  tubes 
  with 
  the 
  commensal 
  poly- 
  

   noid 
  Enipo 
  gracilis 
  Verrill 
  (=E. 
  cirrata 
  TreadweU) 
  reported 
  by 
  Berke- 
  

   ley 
  and 
  Berkeley 
  from 
  Alaska; 
  also 
  from 
  off 
  Nova 
  Scotia 
  and 
  Mas- 
  

   sachusetts 
  (in 
  USNM). 
  

  

  New 
  records. 
  — 
  Arctic 
  Alaska: 
  Off 
  Point 
  Barrov/, 
  up 
  to 
  12.1 
  miles 
  

   from 
  shore, 
  24.7-123.5 
  fms., 
  on 
  bottoms 
  of 
  mud, 
  worm 
  tubes, 
  stones, 
  

   and 
  various 
  combinations 
  of 
  rocks, 
  stones, 
  gravel 
  (6 
  stations, 
  18 
  

   specimens). 
  Bering 
  Sea: 
  Cape 
  Prince 
  of 
  Wales, 
  23 
  fms., 
  Dall, 
  1874. 
  

   Albatross 
  Sta. 
  3311, 
  53° 
  59' 
  N., 
  166° 
  29' 
  W., 
  85 
  fms., 
  and 
  Sta. 
  3313, 
  

   54° 
  or 
  N., 
  166° 
  27' 
  W., 
  68 
  fms., 
  1890. 
  Alaska: 
  Albatross 
  Sta. 
  2848, 
  

   Unalaska 
  to 
  Cook 
  Island, 
  1888; 
  Eastern 
  Harbor, 
  Sitka, 
  15 
  fms., 
  Dall, 
  

   1874. 
  Kamchatka: 
  Albatross 
  Sta. 
  3644, 
  51° 
  09' 
  N., 
  157° 
  48' 
  W., 
  96 
  

   fms., 
  1896. 
  East 
  Coast 
  North 
  America: 
  Off 
  Labrador, 
  30-125 
  

   fms.. 
  Blue 
  Dolphin 
  Expeditions, 
  1949, 
  1950, 
  1951; 
  off 
  Nova 
  Scotia, 
  

   Bay 
  of 
  Fundy, 
  Maine, 
  New 
  Hampshire, 
  Massachusetts, 
  26-150 
  fms., 
  

   U. 
  S. 
  Fish 
  Commission. 
  

  

  Distribution. 
  — 
  Widely 
  distributed 
  in 
  the 
  Arctic: 
  Siberian 
  and 
  

  

  