﻿from 
  the 
  North 
  Sea 
  and 
  adjacent 
  jyarts. 
  271 
  

  

  quently 
  no 
  depth 
  nor 
  locality 
  can 
  be 
  given. 
  The 
  animal 
  

   itself 
  is 
  linear, 
  and 
  the 
  body 
  has 
  about 
  98 
  segments. 
  The 
  

   dorsal 
  surface 
  is 
  light 
  brown 
  and 
  slightly 
  iridescent, 
  while 
  

   the 
  ventral 
  surface 
  is 
  darker 
  in 
  colour, 
  and 
  each 
  segment 
  

   has 
  minute 
  dark 
  spots. 
  No 
  groove 
  is 
  present 
  in 
  the 
  ventral 
  

   surface 
  of 
  the 
  specimen, 
  and 
  the 
  dorsal 
  himelise 
  of 
  the 
  feet, 
  

   moreover, 
  were 
  not 
  so 
  prominent 
  as 
  is 
  mentioned 
  in 
  the 
  

   Monograph. 
  However, 
  it 
  (dorsal 
  lamella) 
  was 
  considerably 
  

   larger 
  than 
  the 
  ventral 
  lamella, 
  and 
  no 
  spines 
  were 
  seen 
  on 
  

   the 
  spinigerous 
  paj)illa 
  at 
  its 
  outer 
  border. 
  The 
  Monograph 
  

   mentions 
  that 
  the 
  spinigerous 
  papilla 
  may 
  bear 
  a 
  few 
  (about 
  

   two) 
  smooth 
  tapering 
  bristles, 
  and 
  Malmgren 
  adds 
  that 
  

   the 
  large, 
  more 
  or 
  less 
  horizontal 
  dorsal 
  cirrus 
  is 
  elliptico- 
  

   subrectangular 
  or 
  unequally 
  reniform. 
  The 
  ventral 
  bristles 
  

   spring 
  from 
  the 
  tip 
  of 
  the 
  lobe, 
  and 
  are 
  characteristic 
  of 
  the 
  

   species. 
  

  

  The 
  Monograph 
  states 
  that 
  this 
  species 
  is 
  more 
  sluggish 
  

   than 
  the 
  ordinary 
  examples 
  of 
  the 
  Phyllodocidse, 
  and, 
  when 
  

   irritated, 
  coils 
  its 
  body 
  in 
  a 
  somewhat 
  stiff 
  manner. 
  There 
  is 
  

   no 
  mention 
  of 
  this 
  species 
  in 
  the 
  Reports 
  of 
  the 
  * 
  Challenger 
  ' 
  

   Expedition 
  ; 
  but 
  in 
  Prof. 
  Izuka^s 
  w 
  ovk 
  No 
  tophT/ 
  Hum 
  J 
  aj^onicunif 
  

   Maren., 
  is 
  described, 
  and 
  this 
  species 
  appears 
  to 
  approach 
  the 
  

   northern 
  species 
  very 
  closely. 
  

  

  From 
  the 
  Monograph 
  its 
  habitat 
  is 
  given 
  as 
  : 
  — 
  Shetland 
  

   [J. 
  O. 
  J.) 
  ; 
  Lamlash 
  Bay, 
  Arran 
  {Dr. 
  Howden) 
  ; 
  Bay 
  of 
  

   Galway, 
  Ireland 
  {^Dr. 
  E. 
  P. 
  Wright) 
  ; 
  St. 
  Andrews 
  Bay, 
  

   deep-sea 
  fishing-boats 
  {E. 
  M.) 
  ; 
  common 
  in 
  dredgings, 
  

   Plymouth 
  {Allen) 
  ; 
  Norw^ay 
  (CErsted, 
  Sars, 
  Norman, 
  and 
  

   Koren); 
  Sweden; 
  Adriatic 
  ((Sars) 
  ; 
  Marseilles 
  {Marion). 
  

  

  Family 
  Hesionidae. 
  

  

  Genus 
  Opiiiodromus, 
  Sars, 
  1861. 
  

  

  Opliiodromus 
  jlexuosus, 
  Dtlla 
  Chiaje, 
  1825. 
  

  

  Fifty-eight 
  complete 
  and 
  an 
  infinite 
  number 
  of 
  fragments 
  

   of 
  this 
  species 
  were 
  obtained 
  in 
  four 
  hauls. 
  The 
  hauls 
  were 
  

   8160, 
  2 
  miles 
  E.N.E. 
  of 
  Rams 
  Ness, 
  at 
  a 
  depth 
  of 
  100 
  m.; 
  

   1.52, 
  off 
  Ardmore 
  Point, 
  at 
  a 
  dejitli 
  of 
  180 
  m. 
  ; 
  8265, 
  at 
  

   Station 
  41 
  A, 
  56° 
  48' 
  N., 
  1° 
  19' 
  E., 
  at 
  a 
  depth 
  of 
  1)4 
  m. 
  ; 
  and 
  

   72, 
  3 
  miles 
  west 
  of 
  Tarbet 
  Ness, 
  at 
  a 
  depth 
  of 
  24 
  f;ithoms. 
  

  

  This 
  annelid 
  usually 
  inhabits 
  regions 
  where 
  there 
  is 
  grey 
  

   mud 
  or 
  clay, 
  and 
  off 
  the 
  western 
  coast 
  of 
  Britain 
  has 
  been 
  

   found 
  at 
  depths 
  varying 
  from 
  4-125 
  fathoms. 
  One 
  or 
  two 
  

   have 
  been 
  found 
  on 
  the 
  ver^e 
  of 
  extreme 
  low 
  water 
  in 
  Ard- 
  

  

  