﻿238 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  103 
  

  

  Remarks. 
  — 
  Some 
  smaller 
  specimens 
  were 
  at 
  first 
  placed 
  under 
  P. 
  

   citrina 
  Malmgren, 
  since 
  the 
  papillae 
  on 
  the 
  proboscis 
  were 
  fewer 
  than 
  

   normal, 
  four 
  rows 
  on 
  each 
  side, 
  with 
  3-5 
  papillae 
  per 
  row. 
  An 
  inter- 
  

   mediate-sized 
  specimen 
  from 
  Canoe 
  Bay, 
  Alaska 
  (Hartman, 
  1948, 
  as 
  

   P. 
  citrina) 
  has 
  five 
  rows 
  on 
  each 
  side, 
  with 
  as 
  many 
  as 
  6 
  papillae 
  per 
  

   row. 
  It 
  appears 
  that 
  the 
  papillae 
  are 
  added 
  on 
  gradually 
  and 
  that 
  

   only 
  in 
  the 
  fully 
  developed 
  individual 
  is 
  the 
  full 
  complement 
  of 
  6 
  

   rows 
  of 
  papillae 
  on 
  each 
  side 
  developed 
  ; 
  the 
  number 
  per 
  row 
  is 
  varia- 
  

   ble, 
  ranging 
  from 
  10 
  (^vith 
  some 
  spaces 
  as 
  if 
  some 
  had 
  dropped 
  off) 
  

   to 
  20. 
  

  

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

   Point 
  Barrow; 
  Point 
  Barrow 
  base, 
  washed 
  ashore; 
  off 
  Point 
  Barrow 
  

   base, 
  up 
  to 
  12.1 
  miles 
  from 
  shore, 
  1.7-123.5 
  fms., 
  on 
  bottoms 
  of 
  mud, 
  

   sandy-mud, 
  mass 
  of 
  worm 
  tubes, 
  and 
  various 
  combinations 
  of 
  mud, 
  

   gravel, 
  stones, 
  pebbles, 
  rocks, 
  large 
  perforated 
  rocks, 
  shells; 
  in 
  screen 
  

   trap 
  on 
  bottom 
  (23 
  stations, 
  74 
  specimens). 
  West 
  Greenland: 
  

   Vaigat, 
  Disko 
  Island, 
  mud, 
  Bartlett, 
  1937. 
  East 
  Coast 
  North 
  

   America: 
  Off 
  Labrador, 
  70 
  fms., 
  Blue 
  Dolphin 
  Expedition, 
  1950; 
  off 
  

   Maine, 
  Massachusetts, 
  intertidal 
  to 
  42 
  fms., 
  U. 
  S. 
  Fish 
  Commission. 
  

   West 
  Coast 
  North 
  America: 
  Washington 
  Sound, 
  Pettibone. 
  

  

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

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

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

   Faroes, 
  Norway 
  to 
  English 
  Channel; 
  Hudson 
  Bay 
  to 
  Massachusetts; 
  

   Bering 
  Sea 
  to 
  Washington; 
  north 
  Japan 
  Sea. 
  In 
  low 
  water 
  to 
  800 
  

   fathoms. 
  

  

  Genus 
  Eumida 
  Malmgren, 
  1865 
  

   Eumida 
  minuta 
  (Ditlevsen, 
  1917) 
  

  

  Figure 
  27, 
  c 
  

  

  Eulalia 
  minuta 
  Ditlevsen, 
  1917, 
  p. 
  56, 
  pi. 
  4, 
  figs. 
  10, 
  12, 
  14. 
  — 
  ? 
  Gorbunov, 
  1946, 
  

  

  p. 
  38. 
  

   Eulalia 
  arctica 
  Aunenkova, 
  1946, 
  pp. 
  185, 
  187, 
  fig. 
  1, 
  a-c. 
  

  

  Description. 
  — 
  Length 
  1-8 
  mm.; 
  width 
  without 
  setae 
  0.3-0.8 
  mm. 
  

   Segments 
  few 
  (12-36). 
  Body 
  very 
  small, 
  slightly 
  tapered 
  anteriorly 
  

   and 
  posteriorly, 
  flattened 
  dorsoventrally. 
  Prostomium 
  semiglobular 
  

   to 
  bluntly 
  conical, 
  with 
  two 
  large 
  eyes 
  near 
  posterior 
  border, 
  with 
  

   antennae 
  rather 
  long, 
  slender, 
  filamentous, 
  almost 
  as 
  long 
  as 
  pro- 
  

   stomium. 
  First 
  tentacular 
  achaetous 
  segment 
  not 
  distinct 
  dorsally, 
  

   with 
  first 
  pair 
  tentacular 
  cirri 
  lateral 
  to 
  prostomium 
  at 
  same 
  level 
  as 
  

   the 
  eyes 
  (thus 
  placed 
  under 
  Eumida 
  and 
  not 
  Eulalia 
  Savigny); 
  two 
  

   pairs 
  tentacular 
  cirri 
  on 
  second 
  segment 
  (first 
  setigerous); 
  fourth 
  

   tentacular 
  cirri 
  on 
  third 
  segment; 
  tentacular 
  cirri 
  enlarged 
  basally, 
  

  

  