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  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  los 
  

  

  Remarks. 
  — 
  The 
  types 
  of 
  Syllis 
  alternata 
  Moore 
  from 
  Alaska 
  and 
  

   S. 
  heterochaeta 
  Moore 
  from 
  California 
  were 
  examined 
  and 
  are 
  herein 
  

   referred 
  to 
  S. 
  cornuta 
  (suggested 
  previously 
  by 
  Monro 
  (1933) 
  for 
  S. 
  

   heterochaeta). 
  The 
  description 
  of 
  S. 
  quaternaria 
  Moore 
  (1906), 
  the 
  

   epitokous 
  form 
  taken 
  at 
  the 
  surface, 
  Point 
  Barrow, 
  Alaska, 
  agrees 
  

   with 
  that 
  of 
  the 
  stolons 
  of 
  S. 
  cornuta 
  collected 
  by 
  Dr. 
  MacGinitie 
  in 
  

   a 
  plankton 
  haul. 
  

  

  New 
  records. 
  — 
  Arctic 
  Alaska: 
  Stem 
  form: 
  Off 
  Point 
  Barrow 
  base, 
  

   18.3-123.5 
  fms., 
  up 
  to 
  15 
  miles 
  from 
  shore, 
  on 
  bottoms 
  of 
  stones, 
  mass 
  

   of 
  worm 
  tubes, 
  and 
  various 
  combinations 
  of 
  mud, 
  pebbles, 
  stones, 
  

   gravel, 
  rocks, 
  large 
  perforated 
  rocks, 
  and 
  worm 
  tubes 
  (17 
  stations, 
  97 
  

   specimens). 
  Sexual 
  stolons: 
  Off 
  Point 
  Barrow 
  base, 
  1.6 
  miles 
  from 
  

   shore, 
  vertical 
  plankton 
  haul 
  of 
  13 
  fathoms 
  tlirough 
  hole 
  in 
  ice, 
  March 
  

   29, 
  April 
  15, 
  1950 
  (12 
  specimens). 
  West 
  Coast 
  North 
  America: 
  

   Strait 
  of 
  Juan 
  de 
  Fuca 
  and 
  Puget 
  Sound, 
  Washington, 
  30-107 
  fms., 
  

   Pettibone. 
  East 
  Coast 
  North 
  America: 
  Off 
  Martha's 
  Vineyard, 
  

   86, 
  134, 
  and 
  146 
  fms.; 
  off 
  Salem, 
  Massachusetts, 
  35 
  fms., 
  U. 
  S. 
  Fish 
  

   Commission, 
  

  

  Distribution. 
  — 
  Cosmopolitan. 
  Widely 
  distributed 
  in 
  the 
  Arctic: 
  

   Siberian 
  and 
  Alaskan 
  Arctic, 
  Greenland, 
  Spitsbergen, 
  Novaya 
  Zemlya. 
  

   Also 
  Iceland, 
  Norway 
  to 
  Madeira, 
  Mediterranean; 
  Red 
  Sea, 
  South 
  

   Arabian 
  coast, 
  Persian 
  Gulf; 
  Indian 
  Ocean 
  (Zanzibar); 
  off 
  South 
  

   Africa; 
  Maine 
  to 
  North 
  Carolina; 
  north 
  Japan 
  Sea, 
  Alaska 
  to 
  Panamd; 
  

   South 
  Pacific 
  (Marquesas, 
  Tahiti). 
  In 
  low 
  water 
  to 
  1,400 
  fathoms; 
  

   sexual 
  stolons 
  in 
  plankton. 
  

  

  Syllis 
  {Typosyllis) 
  fasciata 
  Malmgren, 
  1867 
  

  

  FiauRE 
  28, 
  o-e 
  

  

  Syllis 
  (Typosyllis) 
  fasciata 
  Malmgren, 
  1867, 
  p. 
  43, 
  pi. 
  7, 
  fig. 
  47; 
  pi. 
  8, 
  fig. 
  52. 
  — 
  

   Augener, 
  1928, 
  p. 
  719.— 
  Fauvel, 
  1934b, 
  p. 
  304.— 
  Annenkova, 
  1934, 
  p. 
  322; 
  

   1938, 
  p. 
  150.— 
  Gorbunov, 
  1946, 
  p. 
  38.— 
  Wesenberg-Lund, 
  1947, 
  p. 
  10, 
  fig. 
  

   2,a; 
  1950a, 
  p. 
  16; 
  1950b, 
  p. 
  47; 
  1951, 
  p. 
  37.— 
  Berkeley 
  and 
  Berkeley, 
  1948, 
  

   p. 
  74, 
  figs. 
  109, 
  110.— 
  Zatsepin, 
  1948, 
  p. 
  115, 
  pi. 
  31, 
  fig. 
  2. 
  

  

  Syllis 
  armillaris 
  Treadwell, 
  1937, 
  p. 
  28 
  (not 
  Nereis 
  armillaris 
  Mtiller, 
  1776; 
  in 
  

   USNM). 
  

  

  Description. 
  — 
  Stem 
  form: 
  Length 
  8-75 
  mm., 
  width 
  without 
  setae 
  

   0.7-3 
  mm. 
  Many 
  smaU 
  ones 
  present; 
  many 
  broken 
  ones 
  and 
  a 
  

   number 
  with 
  regenerating 
  posterior 
  ends. 
  Segments 
  not 
  as 
  short 
  as 
  

   in 
  S. 
  cornuta. 
  Prostomium 
  with 
  two 
  pairs 
  of 
  eyes, 
  anterior 
  pair 
  

   larger, 
  crescentric. 
  Moniliform 
  dorsal 
  cirri 
  with 
  about 
  24 
  articles 
  

   (20-40; 
  12-17 
  in 
  young 
  specimens). 
  Parapodia 
  each 
  with 
  one 
  to 
  

   four 
  large, 
  pointed 
  acicula 
  usually 
  protruding 
  beyond 
  distal 
  tips 
  of 
  

   setal 
  lobes. 
  Neurosetae 
  all 
  compound, 
  with 
  terminal 
  blades 
  rather 
  

   short, 
  hooked, 
  with 
  tips 
  entire; 
  some 
  setae 
  may 
  have 
  blades 
  broken 
  

  

  