﻿304 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  103 
  

  

  1944a, 
  pp. 
  335, 
  342, 
  pi. 
  33, 
  figs. 
  3, 
  4; 
  1951, 
  p. 
  106.— 
  Zatsepin, 
  1948, 
  p. 
  142, 
  

  

  pi. 
  33, 
  fig. 
  3.— 
  Wesenberg-Lund, 
  1948, 
  p. 
  48, 
  figs. 
  24, 
  25; 
  1950a, 
  p. 
  44; 
  1950b, 
  

  

  p. 
  100; 
  1951, 
  p. 
  94. 
  — 
  Hartman 
  and 
  Reish, 
  1950, 
  p. 
  37. 
  

   Maldane 
  sarsi 
  var, 
  antardica 
  Arwidsson, 
  1911a, 
  p. 
  32, 
  figs. 
  — 
  Munro, 
  1930, 
  p. 
  

  

  169; 
  1936, 
  p. 
  168. 
  

   Maldane 
  sarsi 
  var. 
  Moore, 
  1923, 
  p. 
  237. 
  

   Maldane 
  sarsi 
  var. 
  tropica 
  Monro, 
  1937, 
  p. 
  307, 
  fig. 
  24. 
  

  

  Description. 
  — 
  Length 
  up 
  to 
  110 
  mm., 
  width 
  3.9 
  mm., 
  setigerous 
  

   segments 
  19, 
  two 
  antanal 
  achaetous 
  segments. 
  Head 
  with 
  long, 
  

   convex 
  keel, 
  ending 
  in 
  blunt 
  process 
  above 
  mouth, 
  bordered 
  by 
  limbate 
  

   plate, 
  with 
  border 
  smooth, 
  usually 
  incised 
  laterally, 
  rather 
  high 
  pos- 
  

   teriorly; 
  nuchal 
  organs 
  short, 
  divergent; 
  without 
  ocelli. 
  Anterior 
  

   segments 
  biannulate. 
  With 
  notosetae 
  only 
  on 
  first 
  setiger; 
  neuro- 
  

   podial 
  crotchets 
  begin 
  on 
  setiger 
  2. 
  Two 
  antanal 
  segments 
  short, 
  

   with 
  achaetous 
  tori 
  slightly 
  marked. 
  Pygidium 
  an 
  oblique 
  flat, 
  oval 
  

   plate, 
  with 
  border 
  usually 
  slightly 
  incised 
  laterally, 
  smooth 
  or 
  slightly 
  

   crenulate 
  ventrally. 
  Anus 
  a 
  folded 
  cushion 
  dorsal 
  to 
  and 
  close 
  to 
  

   pygidial 
  rim. 
  Tube: 
  Free, 
  circular, 
  thin 
  to 
  thick 
  walled, 
  of 
  fine 
  

   agglomerated 
  mud 
  and 
  sand 
  grains. 
  

  

  New 
  Records. 
  — 
  Arctic 
  Alaska: 
  Off 
  Point 
  Barrow 
  base, 
  3 
  miles 
  

   from 
  shore, 
  20.3 
  fms., 
  on 
  bottom 
  of 
  mud, 
  gravel, 
  stones, 
  shells 
  (1 
  

   station, 
  1 
  specimen), 
  Bering 
  Sea: 
  Albatross 
  Sta. 
  3603, 
  55°23' 
  N., 
  

   170°31' 
  W., 
  1,771 
  fms., 
  1895. 
  Canadian 
  Arctic: 
  Northwest 
  shore 
  

   Daniels 
  Island, 
  mouth 
  Newell 
  Sound, 
  Frobisher 
  Bay, 
  Baffin 
  Land, 
  

   10-30 
  fms., 
  Bartlett. 
  East 
  Coast 
  North 
  America: 
  Off 
  Labrador, 
  

   30 
  fms.. 
  Blue 
  Dolphin 
  Expedition, 
  1950; 
  off 
  Nova 
  Scotia, 
  Maine, 
  

   Massachusetts, 
  Rhode 
  Island, 
  14-487 
  fms., 
  U. 
  S. 
  Fish 
  Commission., 
  

  

  Distribution. 
  — 
  Widely 
  distributed 
  in 
  the 
  Arctic: 
  Siberian, 
  Alaskan 
  

   and 
  Canadian 
  Arctic, 
  Davis 
  Strait, 
  Greenland, 
  Spitsbergen, 
  Novaya 
  

   Zemlya, 
  Kara 
  Sea. 
  Also 
  Iceland, 
  Norway 
  to 
  France; 
  Labrador 
  to 
  

   Rhode 
  Island, 
  Louisiana, 
  Mississippi, 
  eastern 
  Texas; 
  Bering 
  Sea 
  to 
  

   southern 
  California; 
  north 
  Japan 
  Sea 
  to 
  Japan; 
  South 
  Arabian 
  coast 
  

   (var. 
  tropica); 
  Bay 
  of 
  Bengal. 
  Southern 
  latitudes: 
  South 
  Georgia, 
  

   South 
  Shetlands, 
  Palmer 
  Archipelago 
  (var. 
  antarctica) 
  ; 
  south 
  Austraha. 
  

   In 
  low 
  water 
  to 
  1,771 
  fathoms. 
  

  

  Genus 
  Nicomache 
  Malmgren, 
  1865 
  

  

  Both 
  species 
  have 
  buccal 
  segment 
  fused 
  with 
  prostomium 
  forming 
  

   hood-shaped 
  head, 
  irregularly 
  rounded, 
  with 
  thickened 
  anteroventral 
  

   border, 
  forming 
  projecting 
  upper 
  lip 
  (fig. 
  34, 
  i). 
  First 
  three 
  setigerous 
  

   segments 
  each 
  with 
  one 
  or 
  two 
  stout, 
  acicular, 
  spinelike 
  nem"0setae. 
  

   Some 
  of 
  notopodia 
  with 
  long, 
  hairlike 
  sinuous 
  dorsal 
  setae. 
  Pygidium 
  

   with 
  anus 
  terminal 
  in 
  center 
  of 
  short, 
  slightly 
  oblique 
  funnel, 
  with 
  

   papillae 
  on 
  border 
  of 
  funnel 
  (fig. 
  34, 
  j, 
  k) 
  . 
  

  

  