﻿162 
  Prof. 
  M'Intosh's 
  Notes 
  from 
  the 
  

  

  The 
  feet 
  at 
  the 
  anterior 
  end 
  of 
  the 
  fragment 
  present 
  

   dorsally 
  a 
  few 
  very 
  long 
  and 
  finely 
  tapered 
  capillary 
  bristles 
  

   and 
  a 
  series 
  of 
  broad 
  flattened 
  bristles, 
  curved 
  and 
  faintly 
  

   striated 
  and 
  with 
  tapered 
  extremities. 
  They 
  represent 
  the 
  

   intermediate 
  forms 
  ushering 
  in 
  the 
  anterior 
  crotchets 
  of 
  

   C. 
  setosa. 
  The 
  ventral 
  division 
  consists 
  of 
  a 
  few 
  shorter 
  

   capillary 
  bristles 
  and 
  a 
  shorter 
  series 
  of 
  the 
  same 
  curved, 
  

   flattened, 
  faintly 
  striated 
  bristles, 
  with 
  tapering 
  tips 
  as 
  in 
  the 
  

   dorsal 
  division. 
  In 
  front 
  of 
  the 
  reproduced 
  tail 
  the 
  dorsal 
  

   division 
  has 
  a 
  few 
  long, 
  tapering, 
  capillary 
  bristles, 
  the 
  main 
  

   series, 
  however, 
  consisting 
  of 
  long, 
  stiff, 
  curved, 
  and 
  striated 
  

   forms, 
  with 
  a 
  nearly 
  cylindrical 
  shaft 
  inserted 
  in 
  the 
  tissues, 
  

   a 
  constriction 
  being 
  evident 
  before 
  passing 
  through 
  the 
  skin, 
  

   after 
  which 
  it 
  curves 
  forward, 
  and 
  ends 
  in 
  the 
  long, 
  flattened, 
  

   curved, 
  and 
  tapering 
  tip. 
  The 
  ventral 
  division, 
  again, 
  has 
  

   shorter 
  bristles 
  of 
  the 
  same 
  kind 
  as 
  the 
  foregoing, 
  besides 
  a 
  

   series 
  of 
  stouter 
  crotchets, 
  which 
  have 
  flattened 
  shafts 
  in- 
  

   serted 
  in 
  the 
  tissues 
  and 
  slightly 
  narrowed 
  curved 
  tips 
  

   tapering 
  to 
  a 
  blunt 
  point. 
  

  

  This 
  form, 
  therefore, 
  appears 
  to 
  pertain 
  to 
  De 
  St. 
  Joseph's 
  

   second 
  series, 
  viz., 
  those 
  with 
  capillary 
  bristles 
  in 
  the 
  dorsal 
  

   throughout 
  and 
  crotchets 
  in 
  a 
  certain 
  number 
  of 
  the 
  ventral 
  

   divisions 
  of 
  the 
  feet, 
  but 
  the 
  absence 
  of 
  reliable 
  figures 
  

   makes 
  its 
  relationship 
  to 
  known 
  forms 
  uncertain. 
  

  

  4. 
  On 
  the 
  Cirratulidae 
  dredged 
  by 
  H.M.S. 
  'Porcupine' 
  

   in 
  1869 
  and 
  1870. 
  

  

  A 
  Cirratulid 
  (Cirratulus 
  tessellatus) 
  dredged 
  in 
  the 
  ' 
  Por- 
  

   cupine 
  ' 
  Expedition 
  of 
  1870 
  at 
  Station 
  50, 
  off 
  the 
  Algerine 
  

   coast 
  in 
  7-51 
  fathoms, 
  appears 
  to 
  differ 
  from 
  any 
  described. 
  

   It 
  was 
  probably 
  procured 
  by 
  the 
  tangles 
  attached 
  to 
  the 
  

   dredge. 
  The 
  head 
  forms 
  a 
  short 
  cone 
  with 
  a 
  large 
  lateral 
  

   eye 
  on 
  each 
  side 
  just 
  in 
  front 
  of 
  the 
  posterior 
  constriction 
  

   and 
  the 
  collar 
  of 
  the 
  next 
  segment, 
  which, 
  however, 
  is 
  

   connected 
  dorsally 
  with 
  the 
  head 
  by 
  a 
  bridge. 
  The 
  mouth 
  

   opens 
  ventrally 
  as 
  a 
  comparatively 
  small 
  aperture 
  in 
  the 
  

   snout 
  in 
  front 
  of 
  the 
  collar. 
  The 
  body 
  is 
  about 
  2 
  inches 
  in 
  

   length 
  and 
  fusiform 
  in 
  outline, 
  the 
  greatest 
  diameter 
  occur- 
  

   ring 
  at 
  the 
  anterior 
  third, 
  from 
  which 
  it 
  tapers 
  to 
  the 
  snout 
  

   and 
  more 
  gently 
  to 
  the 
  tail. 
  It 
  is 
  rounded 
  dorsally, 
  flattened 
  

   ventrally, 
  though 
  posteriorly 
  it 
  is 
  somewhat 
  compressed 
  on 
  

   both 
  surfaces. 
  The 
  segments 
  are 
  narrow 
  and 
  numerous. 
  

   Anteriorly 
  the 
  rings 
  are 
  slightly 
  tessellated, 
  after 
  the 
  manner 
  

   of 
  Scelibregma, 
  though 
  to 
  a 
  less 
  extent, 
  and 
  this 
  condition 
  

   probably 
  occurs 
  throughout 
  in 
  the 
  fresh 
  or 
  well-preserved 
  

  

  