﻿AIARINE 
  POLYCHAETE 
  WORMS 
  — 
  PETTIBONB 
  325 
  

  

  Genus 
  Proclea 
  Saint- 
  Joseph, 
  1894 
  

   Proclea 
  graffii 
  (Langerhans, 
  1884) 
  

  

  Leaena 
  graffii 
  Langerhans, 
  1884, 
  p. 
  262, 
  pi. 
  15, 
  fig. 
  21. 
  

  

  Proclea 
  graffi 
  Southern, 
  1914, 
  p. 
  120.— 
  Hessle, 
  1917, 
  p. 
  199, 
  fig. 
  53.— 
  Fauvel, 
  

  

  1927, 
  p. 
  268, 
  fig. 
  94, 
  a-g.— 
  Gorbunov, 
  1946, 
  p. 
  39.— 
  Zatsepin, 
  1948, 
  p. 
  157, 
  pi. 
  

  

  38, 
  fig. 
  19.— 
  Wesenberg-Lund, 
  1951, 
  p. 
  111. 
  

  

  Description. 
  — 
  Length 
  up 
  to 
  42 
  mm., 
  width 
  3 
  mm., 
  segments 
  49. 
  

   Ventral 
  shields 
  about 
  10. 
  Cephalic 
  ridge 
  without 
  eye-spots. 
  With- 
  

   out 
  branchiae. 
  With 
  lateral 
  lobes 
  on 
  segments 
  2-4, 
  those 
  on 
  segments 
  

   2 
  and 
  3 
  elongate, 
  extending 
  to 
  ventral 
  shields. 
  Nephridial 
  papillae 
  

   on 
  segments 
  3, 
  6-8. 
  Thoracic 
  setigers 
  16. 
  Uncini 
  begin 
  on 
  seg- 
  

   ment 
  6 
  (setiger 
  3), 
  in 
  single 
  rows 
  on 
  first 
  six, 
  in 
  double 
  rows 
  on 
  rest 
  

   of 
  thoracic 
  segments, 
  in 
  single 
  rows 
  on 
  projecting 
  abdominal 
  pinnules. 
  

   Pygidium 
  crenulate. 
  Colorless 
  in 
  alcohol. 
  Tube 
  ? 
  

  

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

   miles 
  from 
  shore, 
  21-36 
  fms., 
  on 
  bottoms 
  of 
  rocks, 
  stones, 
  large 
  per- 
  

   forated 
  rocks, 
  from 
  breaking 
  rocks 
  apart 
  (3 
  stations, 
  6 
  specimens) 
  . 
  

  

  Distribution. 
  — 
  Scattered 
  records 
  in 
  the 
  Arctic 
  : 
  Siberian 
  and 
  Alaskan 
  

   Arctic, 
  Franz 
  Josef 
  Land, 
  White 
  Sea. 
  Also 
  Bering 
  Sea 
  to 
  Okhotsk 
  

   Sea; 
  Iceland, 
  Swedish 
  west 
  coast, 
  Finland, 
  Ireland, 
  Madeira. 
  In 
  

   1-36 
  fathoms. 
  

  

  Genus 
  Leaena 
  Malmgren, 
  1865 
  

  

  Leaena 
  abranchiata 
  Malmgren, 
  1865 
  

  

  Figure 
  37, 
  a, 
  b 
  

  

  Leaena 
  abranchiata 
  Malmgren, 
  1865, 
  p. 
  385, 
  pi. 
  24, 
  fig. 
  64. 
  — 
  not 
  Moore, 
  1909b, 
  

   p. 
  141 
  (^Lanassa 
  venusta). 
  — 
  Ehlers, 
  1913, 
  p. 
  563. 
  — 
  Hessle, 
  1917, 
  p. 
  197, 
  — 
  

   Augener, 
  1928, 
  p. 
  793.— 
  Annenkova, 
  1937, 
  p. 
  192; 
  1938, 
  p. 
  208.— 
  Berkeley 
  

   and 
  Berkeley, 
  1943, 
  p. 
  130.— 
  Gorbunov, 
  1946, 
  p. 
  39.— 
  Zatsepin, 
  1948, 
  p. 
  157, 
  

   pi. 
  38, 
  fig. 
  17.— 
  Hartman, 
  1948, 
  p. 
  45. 
  —Wesenberg-Lund, 
  1950a, 
  p. 
  53; 
  

   1950b, 
  p. 
  121; 
  1951, 
  p. 
  112. 
  

  

  Leaena 
  antarctica 
  Mcintosh, 
  1885, 
  p. 
  462, 
  pi. 
  48, 
  figs. 
  9, 
  10; 
  pi. 
  28A, 
  figs. 
  10, 
  11. 
  

  

  Leaena 
  abranchiata 
  var. 
  antarctica 
  Hessle, 
  1917, 
  p. 
  197. 
  — 
  Monro, 
  1930, 
  p. 
  188; 
  

   1936, 
  p. 
  178. 
  

  

  Description. 
  — 
  Length 
  43 
  mm., 
  width 
  3 
  mm. 
  (up 
  to 
  75 
  mm. 
  long, 
  6 
  

   mm. 
  wide 
  — 
  Malmgren, 
  1865). 
  About 
  10 
  ventral 
  shields. 
  Cephalic 
  

   ridge 
  without 
  eye-spots. 
  Without 
  branchiae. 
  Lateral 
  lobes 
  on 
  seg- 
  

   ment 
  2 
  extend 
  ventrally, 
  those 
  on 
  segment 
  3 
  extend 
  dorsally, 
  forming 
  

   a 
  prominent 
  ridge 
  (segment 
  preceding 
  first 
  setiger; 
  ridge 
  not 
  so 
  prom- 
  

   inent 
  in 
  var. 
  antarctica). 
  Thoracic 
  setigers 
  10. 
  Uncini 
  begin 
  on 
  seg- 
  

   ment 
  5 
  (setiger 
  2), 
  in 
  single 
  rows 
  on 
  first 
  6, 
  in 
  double 
  rows 
  on 
  next 
  10, 
  

   then 
  in 
  single 
  rows 
  on 
  prominent 
  abdominal 
  pinnules. 
  Notosetae 
  

   widely 
  bilimbate 
  below 
  whiplike 
  tips. 
  Colorless 
  in 
  alcohol. 
  Tube 
  : 
  

   Of 
  soft 
  mud 
  with 
  a 
  few 
  bits 
  of 
  scattered 
  rock 
  (some 
  small 
  ones 
  on 
  

   tubes 
  of 
  Pista 
  maculata) 
  . 
  

  

  