﻿MARINE 
  POLYCHAETE 
  WORMS 
  — 
  PETTIBONE 
  273 
  

  

  Glycera 
  nana 
  Johnson, 
  1901, 
  p. 
  411, 
  pi. 
  10, 
  fig. 
  103.— 
  Berkeley 
  and 
  Berkeley, 
  

  

  1948, 
  p. 
  37, 
  figs. 
  50, 
  51. 
  

   Glycera 
  lapidum 
  Fauvel, 
  1914, 
  p. 
  205; 
  1923, 
  p. 
  386, 
  fig. 
  151, 
  /-m; 
  1934a, 
  p. 
  41.— 
  

  

  Eliason, 
  1920, 
  p. 
  36, 
  fig. 
  6.— 
  Treadwell, 
  1937, 
  p. 
  32.— 
  St0p-Bowitz, 
  1941, 
  

  

  p. 
  191, 
  fig. 
  2; 
  1948b, 
  p. 
  7. 
  

  

  Description. 
  — 
  Length 
  80 
  mm., 
  width 
  without 
  setae 
  6 
  mm. 
  (length 
  

   up 
  to 
  150 
  mm. 
  — 
  Hartman, 
  1950). 
  Segments 
  usually 
  triannulate 
  

   (may 
  be 
  biannulate, 
  a 
  slightly 
  longer 
  anterior 
  ring 
  at 
  the 
  level 
  of 
  the 
  

   parapodia 
  and 
  a 
  shorter 
  posterior 
  ring; 
  the 
  former 
  may 
  be 
  sub- 
  

   divided, 
  thus 
  triannulate; 
  the 
  latter 
  may 
  also 
  be 
  somewhat 
  divided, 
  

   thus 
  tetra-annulate) 
  . 
  Conical 
  prostomium 
  with 
  8-16 
  annuli 
  (often 
  

   difficult 
  to 
  count 
  accurately). 
  Dorsal 
  cirri 
  small, 
  globular, 
  inserted 
  

   well 
  above 
  the 
  parapodia. 
  Ventral 
  cirri 
  wide, 
  conical. 
  Parapodia 
  

   biramous 
  throughout; 
  notopodia 
  represented 
  by 
  a 
  short, 
  conical 
  

   presetal 
  lobe 
  and 
  a 
  small 
  bundle 
  of 
  simple 
  capillary 
  setae; 
  neuropodia 
  

   with 
  a 
  longer, 
  conical 
  presetal 
  lobe 
  and 
  a 
  fan-shaped 
  group 
  of 
  com- 
  

   pound 
  spinigerous 
  setae; 
  a 
  single 
  short, 
  wide, 
  rounded 
  postsetal 
  lobe 
  

   common 
  to 
  both 
  notopodia 
  and 
  neuropodia 
  (thus 
  two 
  conical 
  an- 
  

   terior 
  lobes 
  and 
  a 
  single 
  postsetal 
  lobe). 
  The 
  relative 
  length 
  of 
  the 
  

   parapodial 
  lobes 
  may 
  be 
  variable, 
  associated 
  with 
  the 
  epitokous 
  

   condition, 
  as 
  indicated 
  by 
  Hartman 
  (1950). 
  Proboscis 
  with 
  two 
  

   kinds 
  of 
  papillae, 
  numerous, 
  long, 
  cylindrical, 
  slender 
  ones, 
  and 
  

   fewer, 
  larger, 
  short, 
  subspherical 
  ones; 
  aileron 
  of 
  jaws 
  with 
  a 
  long 
  

   lateral 
  prolongation. 
  Color: 
  In 
  alcohol: 
  Brownish. 
  

  

  Remarks. 
  — 
  Monro 
  (1930) 
  referred 
  Qlycera 
  lapidum 
  Quatrefages 
  to 
  

   G. 
  capitata; 
  they 
  have 
  been 
  separated 
  on 
  minor 
  and 
  apparently 
  

   variable 
  characters; 
  Fauvel 
  (1914, 
  1923) 
  regarded 
  them 
  as 
  mere 
  

   varieties. 
  Hartman 
  (1950) 
  referred 
  G. 
  nana 
  Johnson 
  to 
  G. 
  capitata. 
  

  

  New 
  records. 
  — 
  Arctic 
  Alaska: 
  Off 
  Point 
  Barrow 
  base, 
  15 
  miles 
  

   from 
  shore, 
  78.2 
  fms., 
  on 
  bottom 
  of 
  small 
  rocks 
  with 
  worm 
  tubes 
  (1 
  

   station, 
  1 
  specimen). 
  Northwest 
  Greenland: 
  Off 
  Conical 
  Rock, 
  

   20-40 
  fms., 
  1938; 
  1 
  mile 
  northwest 
  Conical 
  Rock, 
  1940; 
  west 
  side 
  

   Wolstemholm 
  Island, 
  1940; 
  all 
  collected 
  by 
  Bartlett. 
  East 
  Coast 
  

   North 
  America: 
  Off 
  Nova 
  Scotia, 
  Maine, 
  Massachusetts. 
  Rhode 
  

   Island, 
  low 
  water 
  to 
  410 
  fms., 
  U. 
  S. 
  Fish 
  Commission. 
  Alaska: 
  

   Eastern 
  Harbor, 
  Sitka, 
  gravelly-mud, 
  15 
  fms., 
  1874; 
  between 
  Pin- 
  

   nacle 
  and 
  Ulakhta, 
  Unalaska, 
  16 
  fms., 
  1874; 
  Captain's 
  Harbor, 
  

   Unalaska, 
  25-75 
  fms., 
  coarse 
  sand, 
  1874; 
  all 
  collected 
  by 
  Dall. 
  

   Albatross 
  Sta. 
  Herendeen 
  Bay, 
  1890. 
  Washington: 
  Albatross 
  Sta. 
  

   2876, 
  48°33' 
  N., 
  124°53' 
  W., 
  59 
  fms., 
  and 
  Sta. 
  2879, 
  48°53' 
  N., 
  125°53' 
  

   W., 
  34 
  fms., 
  1888; 
  Strait 
  of 
  Juan 
  de 
  Fuca, 
  Washington 
  and 
  Puget 
  

   Sounds, 
  low 
  water 
  to 
  165 
  fms., 
  Pettibone. 
  

  

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

   and 
  Canadian 
  Arctic, 
  Baffin 
  Bay, 
  Davis 
  Strait, 
  Greenland, 
  Spits- 
  

   bergen, 
  Norway, 
  Barents 
  Sea, 
  White 
  Sea, 
  Novaya 
  Zemlya, 
  Kara 
  

  

  