﻿MARINE 
  POLYCHAETE 
  WORMS 
  — 
  PETTIBONE 
  303 
  

  

  Genus 
  Praxillella 
  Verrill, 
  1881 
  

   Praxillella 
  praetertnissa 
  (Malmgren, 
  1865) 
  

  

  Figure 
  34, 
  b-f 
  

  

  Praxilla 
  praetermissa 
  Malmgren, 
  1865, 
  p. 
  191; 
  1867, 
  p. 
  100, 
  pi. 
  11, 
  fig. 
  62. 
  

   Praxillella 
  praetermissa 
  Verrill, 
  1881, 
  pp. 
  298, 
  305, 
  309, 
  312.— 
  Webster 
  and 
  

  

  Benedict, 
  1887, 
  p. 
  746.— 
  Arwidsson, 
  1907, 
  p. 
  192, 
  figs.— 
  Eliason, 
  1920, 
  p. 
  

  

  66.— 
  Augener, 
  1928, 
  p. 
  762.— 
  Annenkova, 
  1937, 
  p. 
  182; 
  1938, 
  p. 
  194.— 
  

  

  Zatsepin, 
  1948, 
  p. 
  142, 
  pi. 
  35, 
  fig. 
  1.— 
  Wesenberg-Lund, 
  1948, 
  p. 
  41, 
  figs. 
  

  

  20, 
  21; 
  1950a, 
  p. 
  43; 
  1950b, 
  p. 
  98; 
  1951, 
  p. 
  93. 
  

   Clymene 
  {Praxillella) 
  praetermissa 
  Fauvel, 
  1927, 
  p. 
  179, 
  fig. 
  62, 
  a-e. 
  

  

  Description. 
  — 
  Length 
  45 
  mm., 
  width 
  1 
  mm, 
  (up 
  to 
  120 
  mm. 
  long, 
  

   2.5 
  mm. 
  wide 
  — 
  Malmgren, 
  1865), 
  19 
  setigerous 
  segments, 
  4-5 
  achaetous 
  

   segments 
  with 
  rudimentary 
  parapodia. 
  Head 
  with 
  oblique 
  limbate 
  

   plate, 
  with 
  border 
  entire, 
  slightly 
  or 
  deeply 
  incised 
  laterally, 
  slightly 
  

   incised 
  posteriorly, 
  terminating 
  anteroventraUy 
  in 
  obtuse 
  cone 
  (not 
  

   produced 
  into 
  digitiform 
  process); 
  median 
  cephalic 
  crest 
  long; 
  nuchal 
  

   grooves 
  one-half 
  to 
  two-thirds 
  its 
  length. 
  Neuropodia 
  of 
  anterior 
  

   three 
  setigers 
  with 
  2-10 
  slightly 
  modified 
  crotchets. 
  Pygidial 
  funnel 
  

   with 
  flat 
  floor, 
  with 
  projecting 
  anal 
  cone 
  with 
  larger 
  valvule 
  on 
  ventral 
  

   side 
  of 
  cone; 
  border 
  of 
  funnel 
  with 
  20-38 
  subequal 
  papillae 
  except 
  

   for 
  a 
  longer 
  ventral 
  one. 
  Proboscis 
  papillate 
  basally. 
  Color: 
  In 
  

   life: 
  Yellow 
  with 
  wide, 
  red 
  and 
  white 
  bands 
  on 
  some 
  anterior 
  segments. 
  

   In 
  alcohol: 
  Brownish 
  to 
  gray, 
  with 
  whitish 
  bands 
  anterior 
  to 
  setae 
  

   on 
  setigers 
  4-8. 
  Tube 
  : 
  Of 
  clay, 
  sand, 
  small 
  bits 
  of 
  rock; 
  may 
  be 
  quite 
  

   resistant. 
  

  

  New 
  records. 
  — 
  Arctic 
  Alaska: 
  Off 
  Point 
  Barrow 
  base, 
  up 
  to 
  7.5 
  

   miles 
  from 
  shore, 
  20-36 
  fms., 
  on 
  various 
  combinations 
  of 
  mud, 
  sand, 
  

   gravel, 
  stones, 
  rocks, 
  large 
  perforated 
  rocks, 
  shells 
  (7 
  stations, 
  10 
  

   specimens). 
  East 
  Coast 
  North 
  America: 
  Off 
  Labrador, 
  5-8 
  fms., 
  

   Blv£ 
  Dolphin 
  Expedition, 
  1949; 
  off 
  Cape 
  Cod, 
  Massachusetts, 
  14-19 
  

   fms., 
  U. 
  S. 
  Fish 
  Commission. 
  

  

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

   Davis 
  Strait, 
  Greenland, 
  Spitsbergen, 
  White 
  Sea, 
  Novaya 
  Zemlya, 
  

   Kara 
  Sea. 
  Also 
  Iceland, 
  Faroes 
  to 
  English 
  Channel, 
  Mediterranean; 
  

   Labrador 
  to 
  Massachusetts; 
  north 
  Japan 
  Sea. 
  In 
  7-1,111 
  fathoms. 
  

  

  Genus 
  Maldane 
  Grube, 
  1860 
  

   Maldane 
  sarsi 
  Malmgren, 
  1865 
  

  

  Figure 
  34, 
  g, 
  h 
  

  

  Maldane 
  sarsi 
  Malmgren, 
  1865, 
  p. 
  188; 
  1867, 
  p. 
  99, 
  pi. 
  10, 
  fig. 
  57. 
  — 
  Arwidsson, 
  

   1907, 
  p. 
  251, 
  figs.— 
  Eliason, 
  1920, 
  p. 
  66.— 
  Fauvel, 
  1927, 
  p. 
  197, 
  fig. 
  69, 
  a-i; 
  

   1932, 
  p. 
  202.— 
  Augener, 
  1928, 
  p. 
  759.— 
  Annenkova, 
  1937, 
  p. 
  179; 
  1938, 
  p. 
  

   192.— 
  Okuda, 
  1939, 
  p. 
  239.— 
  Berkeley 
  and 
  Berkeley, 
  1942, 
  p. 
  199.— 
  Hartman, 
  

  

  