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  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  i03 
  

  

  including 
  elytrophores 
  and 
  dorsal 
  tubercles; 
  ventral 
  surface 
  without 
  

   color 
  or 
  dusky 
  midventrally; 
  elytra 
  gray, 
  translucent 
  to 
  opaque, 
  

   with 
  a 
  darker 
  brownish-gray 
  medial 
  crescent-shaped 
  area, 
  with 
  a 
  

   colorless 
  circular 
  area 
  medial 
  to 
  and 
  a 
  darker 
  area 
  posterior 
  to 
  the 
  

   place 
  of 
  attachment. 
  

  

  Remarks. 
  — 
  A. 
  sarsi 
  differs 
  from 
  A. 
  badia 
  (Theel), 
  with 
  which 
  it 
  has 
  

   sometimes 
  been 
  confused, 
  by 
  having 
  the 
  neurosetae 
  of 
  two 
  lands, 
  

   with 
  capillary 
  tips 
  and 
  with 
  slender, 
  relatively 
  obtuse 
  tips. 
  In 
  A. 
  

   badia, 
  all 
  the 
  neurosetae 
  have 
  capillary 
  tips. 
  

  

  Parasites. 
  — 
  One 
  of 
  the 
  63 
  specimens 
  had 
  the 
  parasitic 
  copepod 
  

   Herpyllobius 
  arcticus 
  Steenstrup 
  and 
  Liitken 
  attached 
  to 
  the 
  prosto- 
  

   mium 
  (identified 
  by 
  P. 
  L. 
  Illg). 
  

  

  New 
  records. 
  — 
  Arctic 
  Alaska: 
  Point 
  Barrow 
  base, 
  washed 
  ashore 
  

   1949 
  (August 
  21, 
  24; 
  September 
  1, 
  12, 
  20, 
  22, 
  24, 
  26; 
  October 
  5, 
  16; 
  

   58 
  specimens) 
  ; 
  off 
  Point 
  Barrow 
  base, 
  up 
  to 
  5 
  miles 
  from 
  shore, 
  5 
  to 
  

   30.7 
  fms., 
  on 
  bottoms 
  of 
  mud 
  or 
  stones, 
  and 
  in 
  screen 
  trap 
  through 
  

   hole 
  in 
  ice, 
  6 
  fms., 
  April 
  11, 
  1949 
  (3 
  stations, 
  5 
  specimens); 
  near 
  

   Point 
  Belcher, 
  Icy 
  Cape, 
  off 
  Point 
  Barrow, 
  Dall. 
  Bering 
  Sea: 
  62°15' 
  

   N., 
  167°48' 
  W., 
  20 
  fms., 
  G. 
  M. 
  Stoney, 
  1884. 
  East 
  Coast 
  North 
  

   America: 
  Off 
  Labrador, 
  6-30 
  fms., 
  Blue 
  Dolphin 
  Expeditions, 
  

   1950, 
  1951. 
  

  

  Distribution. 
  — 
  Widely 
  distributed 
  in 
  the 
  Arctic: 
  Siberian 
  and 
  

   Alaskan 
  Arctic, 
  Greenland, 
  Jan 
  Mayen, 
  Spitsbergen, 
  Norway, 
  Franz 
  

   Josef 
  Land, 
  Barents 
  Sea, 
  Novaya 
  Zemlya, 
  Kara 
  Sea. 
  Also 
  Iceland, 
  

   Faroes 
  to 
  Great 
  Britain, 
  the 
  Baltic; 
  Labrador 
  to 
  Maine; 
  Bering 
  Sea; 
  

   north 
  Japan 
  Sea. 
  In 
  3-1,215 
  fathoms. 
  

  

  Genus 
  Eunoe 
  Malmgren, 
  1865 
  

   Key 
  to 
  the 
  species 
  of 
  Eunoe 
  from 
  Point 
  Barrow 
  

  

  1. 
  Elytra 
  with 
  scattered, 
  bluntly 
  conical 
  microtubercles 
  only, 
  lacking 
  fringe 
  of 
  

  

  papillae. 
  Eyes 
  small, 
  anterior 
  pair 
  anterolateral 
  on 
  prostomium 
  (scarcely 
  

   visible 
  dorsally) 
  E. 
  clarki 
  

  

  Elytra 
  with 
  macrotubercles 
  in 
  addition 
  to 
  microtubercles, 
  with 
  lateral 
  fringe 
  

   of 
  papillae. 
  Eyes 
  larger, 
  anterior 
  pair 
  anterodorsal 
  (visible 
  dorsally) 
  2 
  

  

  2. 
  Body 
  broad, 
  oval, 
  flattened. 
  Extra 
  rounded 
  lobes 
  on 
  inner 
  sides 
  of 
  elytro- 
  

  

  phores 
  and 
  dorsal 
  tubercles 
  (lobes 
  corresponding 
  to 
  elytrophores 
  on 
  non- 
  

   elytra-bearing 
  segments, 
  fig. 
  26, 
  c). 
  Nuchal 
  fold 
  posterior 
  to 
  prostomium 
  

   not 
  prominent. 
  Setae 
  yellow. 
  Elytra 
  with 
  microtubercles 
  rather 
  low, 
  

   flattened, 
  semiglobose, 
  some 
  bifid; 
  macrotubercles 
  confined 
  essentially 
  to 
  

   single 
  row 
  near 
  external 
  border, 
  nodular, 
  with 
  roughened 
  tips. 
  Antennae 
  

  

  with 
  short 
  papillae 
  E. 
  nodosa 
  

  

  Body 
  more 
  elongate, 
  not 
  so 
  flattened. 
  Without 
  extra 
  rounded 
  lobes 
  on 
  inner 
  

   sides 
  of 
  elytrophores 
  and 
  dorsal 
  tubercles. 
  Nuchal 
  fold 
  prominent. 
  Setae 
  

   dark 
  amber-colored. 
  Elytra 
  with 
  microtubercles 
  one- 
  to 
  many-pronged; 
  

   macrotubercles 
  variable 
  in 
  number, 
  size, 
  and 
  position, 
  branched. 
  Antennae 
  

   with 
  longer 
  papillae 
  E. 
  oerstedi 
  

  

  