﻿MARINE 
  POLYCHAETE 
  WORMS 
  — 
  PETTIBONE 
  205 
  

  

  The 
  distribution 
  of 
  the 
  Point 
  Barrow 
  polychaetes 
  is 
  summarized 
  

   in 
  table 
  1. 
  

  

  The 
  collections 
  include 
  3,270 
  specimens 
  representing 
  88 
  species 
  and 
  

   26 
  families 
  of 
  Polychaeta. 
  Some 
  of 
  the 
  species 
  were 
  exceedingly 
  

   common; 
  others 
  were 
  represented 
  only 
  by 
  single 
  or 
  few 
  specimens. 
  

   The 
  Polynoidae, 
  Syllidae, 
  and 
  Terebellidae 
  are 
  the 
  most 
  abundant 
  

   both 
  as 
  to 
  numbers 
  of 
  species 
  (11 
  each, 
  or 
  37 
  percent) 
  and 
  specimens 
  

   (66 
  percent). 
  The 
  Phyllodocidae 
  and 
  Sabellidae 
  have 
  7 
  species 
  each. 
  

   Eleven 
  families 
  are 
  represented 
  by 
  a 
  single 
  species 
  each. 
  

  

  During 
  1948, 
  because 
  of 
  the 
  ice 
  floes 
  all 
  summer, 
  there 
  was 
  no 
  

   heavy 
  surf 
  and 
  practically 
  nothing 
  was 
  washed 
  up 
  on 
  the 
  beach. 
  

   During 
  1949, 
  specimens 
  were 
  washed 
  ashore 
  on 
  17 
  different 
  days. 
  

   In 
  1950, 
  specimens 
  were 
  collected 
  from 
  the 
  beach 
  on 
  only 
  one 
  day. 
  

   Altogether, 
  287 
  specimens 
  of 
  polychaetes 
  were 
  washed 
  ashore, 
  repre- 
  

   senting 
  20 
  species 
  and 
  11 
  families. 
  Two 
  species, 
  Eunoe 
  clarki 
  (2 
  

   specimens) 
  and 
  Travisia 
  carnea 
  (12 
  specimens), 
  were 
  obtained 
  in 
  this 
  

   manner 
  only. 
  Four 
  species 
  were 
  dredged 
  occasionally 
  but 
  were 
  

   washed 
  ashore 
  in 
  much 
  larger 
  numbers, 
  namely: 
  Antinoe 
  sarsi 
  (58 
  

   specimens), 
  Alelaenis 
  loveni 
  (65 
  specimens), 
  Arenicola 
  glacialis 
  (54 
  

   specimens), 
  and 
  Brada 
  villosa 
  (24 
  specimens). 
  Additional 
  species 
  

   were 
  commonly 
  obtained 
  in 
  the 
  dredge 
  but 
  were 
  washed 
  ashore 
  in 
  

   small 
  numbers. 
  

  

  On 
  three 
  occasions 
  in 
  1950 
  when 
  80-foot 
  vertical 
  plankton 
  hauls 
  

   were 
  taken 
  through 
  holes 
  in 
  the 
  ice, 
  the 
  sexual 
  stages 
  of 
  three 
  of 
  the 
  

   syllids 
  were 
  found 
  — 
  Avtolytits 
  fallax, 
  Syllis 
  cornuta, 
  and 
  Syllis 
  fasciata. 
  

  

  A 
  station 
  12.1 
  miles 
  from 
  shore, 
  123.5 
  fathoms, 
  August 
  17, 
  1949, 
  

   produced 
  literally 
  bushels 
  of 
  worm 
  tubes. 
  The 
  tubes 
  of 
  the 
  terebellid 
  

   Pista 
  maculata 
  made 
  up 
  the 
  greater 
  part 
  of 
  the 
  mass. 
  

  

  Of 
  the 
  88 
  Point 
  Barrow 
  species, 
  75 
  (85.2%) 
  are 
  common 
  to 
  the 
  

   Arctic, 
  Atlantic, 
  and 
  Pacific; 
  5 
  (5.7%) 
  are 
  common 
  only 
  to 
  the 
  Arctic 
  

   and 
  Pacific 
  {Gattyana 
  ciliata, 
  Eusyllis 
  magnijica, 
  Pionosyllis 
  compacta, 
  

   Glycinde 
  wireni, 
  and 
  Idanthyrsus 
  armatus); 
  3 
  (3.4%) 
  are 
  common 
  to 
  

   the 
  Arctic 
  and 
  Atlantic 
  {Autolytus 
  fallax, 
  Eumida 
  minuta, 
  Travisia 
  

   carnea); 
  4 
  (4.5%) 
  are 
  confined 
  to 
  the 
  Arctic 
  (Eunoe 
  clarki, 
  Nerinides 
  

   sp., 
  Arenicola 
  glacialis, 
  Ampharete 
  vega); 
  and 
  1 
  (1.1%) 
  is 
  bipolar, 
  

   known 
  only 
  from 
  the 
  Arctic 
  and 
  Antarctic 
  {Ammotrypane 
  hreviata). 
  

  

  The 
  Point 
  Barrow 
  records 
  help 
  to 
  complete 
  the 
  circumpolarity 
  

   records 
  for 
  58 
  circumpolar 
  or 
  almost 
  circimipolar 
  species, 
  some 
  of 
  

   which 
  previously 
  had 
  been 
  known 
  only 
  from 
  the 
  Siberian 
  and 
  Canadian 
  

   Arctic, 
  Greenland, 
  and 
  Spitsbergen. 
  The 
  range 
  has 
  been 
  extended 
  

   for 
  28 
  species, 
  6 
  of 
  which 
  have 
  been 
  extended 
  by 
  combining 
  Atlantic 
  

   and 
  Pacific 
  specific 
  names. 
  

  

  