﻿98 
  Prof. 
  M'Intosli's 
  Notes 
  from 
  the 
  

  

  tinguislied 
  by 
  the 
  absence 
  of 
  bristles 
  and 
  the 
  elongated 
  

   nature 
  of 
  the 
  lamellae 
  for 
  the 
  hooks 
  and 
  of 
  the 
  cirrus, 
  as 
  

   well 
  as 
  by 
  the 
  great 
  antero-posterior 
  diameter 
  of 
  the 
  seg- 
  

   ments 
  in 
  relation 
  to 
  their 
  transverse. 
  Each 
  bears 
  laterally 
  

   the 
  slender 
  tapering 
  cirrus, 
  and 
  beneath 
  it 
  the 
  small 
  elon- 
  

   gated 
  lamella 
  for 
  the 
  hooks, 
  which 
  are 
  considerably 
  smaller 
  

   than 
  those 
  in 
  front, 
  but 
  have 
  a 
  similar 
  structure. 
  If 
  anything 
  

   they 
  are 
  shorter 
  and 
  broader 
  than 
  those 
  of 
  the 
  anterior 
  

   region, 
  and 
  show 
  five 
  or 
  six 
  teeth 
  and 
  a 
  rounded 
  prow. 
  

  

  The 
  general 
  colour 
  of 
  a 
  Zetlandic 
  example 
  is 
  pale 
  orange 
  

   anteriorly 
  from 
  the 
  wall 
  of 
  the 
  gut, 
  whilst 
  tiie 
  posterior 
  

   region 
  is 
  pale 
  with 
  the 
  brownish 
  line 
  of 
  the 
  intestine. 
  The 
  

   processes 
  anteriorly 
  are 
  of 
  a 
  pale 
  amber 
  hue. 
  

  

  Fauvel 
  found 
  gregarines 
  in 
  the 
  alimentary 
  canal. 
  Tiiis 
  

   autiior's 
  account 
  of 
  the 
  external 
  and 
  internal 
  structure 
  of 
  

   Anipharete 
  grubei 
  is 
  both 
  comprehensive 
  and 
  complete. 
  

  

  Prof. 
  Fauvel^ 
  (1901) 
  severely 
  criticises 
  the 
  statements 
  of 
  

   M. 
  Cosmovici 
  concerning 
  the 
  segmental 
  organs, 
  especially 
  

   his 
  view 
  that 
  when 
  the 
  nephridia 
  do 
  not 
  carry 
  the 
  repro- 
  

   ductive 
  elements 
  externally 
  they 
  do 
  not 
  communicate 
  with 
  

   the 
  coelom 
  by 
  a 
  ciliated 
  funnel, 
  and 
  that 
  when 
  present 
  the 
  

   latter 
  dors 
  not 
  open 
  into 
  the 
  preceding 
  segment. 
  Fauvel 
  

   especially 
  quotes 
  his 
  observations 
  on 
  the 
  nephridia 
  of 
  Am- 
  

   pharete 
  grubei, 
  in 
  which 
  only 
  two 
  pairs 
  occur, 
  viz., 
  one 
  

   piercing 
  the 
  anterior 
  thoracic 
  diaphragm, 
  the 
  other 
  behind 
  

   it. 
  The 
  former 
  is 
  solely 
  excretory, 
  the 
  latter 
  gives 
  passage 
  

   to 
  the 
  genital 
  products. 
  

  

  A 
  careful 
  account 
  of 
  the 
  tube 
  of 
  this 
  species 
  and 
  its 
  

   formation 
  is 
  given 
  by 
  Fauvel 
  (1897). 
  It 
  is 
  composed 
  of 
  

   shell-fragments 
  and 
  secretion, 
  and 
  is 
  placed 
  vertically 
  on 
  the 
  

   bottom, 
  one 
  half 
  with 
  thinner 
  walls 
  immersed 
  in 
  the 
  sand 
  

   and 
  one 
  part 
  with 
  thicker 
  walls 
  projecting 
  from 
  the 
  surface. 
  

  

  The 
  next 
  form 
  is 
  Amphicieis 
  gtmneri, 
  Sars, 
  which 
  ranges 
  to 
  

   deep 
  water 
  off 
  the 
  British 
  coasts, 
  and 
  in 
  the 
  neighbouring 
  

   Atlantic 
  goes 
  to 
  640 
  fathoms. 
  In 
  this 
  the 
  cephalic 
  region 
  is 
  

   somewhat 
  shield-shaped 
  dorsally 
  with 
  a 
  rounded 
  hoss 
  on 
  each 
  

   angle 
  anteriorly 
  and 
  a 
  median 
  groove. 
  A 
  prominent 
  fillet 
  of 
  

   the 
  buccal 
  segment 
  bounds 
  it 
  laterally 
  and, 
  converging 
  to 
  a 
  

   median 
  dimple, 
  guards 
  it 
  posteriorly. 
  On 
  each 
  side, 
  at 
  the 
  

   commencement 
  of 
  the 
  posterior 
  slope, 
  is 
  a 
  minute 
  eye, 
  indis- 
  

   tinct 
  in 
  most 
  spirit- 
  preparations. 
  A 
  dimple 
  in 
  the 
  fillet 
  

   opposite 
  the 
  eye-speck 
  increases 
  its 
  range. 
  Posteriorly 
  is 
  

   the 
  nuchal 
  organ 
  with 
  pigment-specks 
  in 
  front. 
  The 
  buccal 
  

  

  * 
  Bullet. 
  Sc. 
  France 
  et 
  Belgique, 
  t. 
  .xxxvi. 
  p. 
  167. 
  

  

  