﻿10-i 
  Prof. 
  M'lutosli's 
  Notes 
  from 
  lie 
  

  

  lias 
  a 
  semicircular 
  posterior 
  lip, 
  from 
  Avliich 
  a 
  meflian 
  

   process 
  goes 
  forward 
  to 
  the 
  under 
  surface 
  of 
  the 
  bitid 
  pro- 
  

   stomium. 
  No 
  tentacles 
  are 
  visible. 
  In 
  the 
  preparation 
  

   only 
  three 
  branchiae 
  are 
  present 
  on 
  each 
  side, 
  but 
  probably 
  

   the 
  fourth 
  has 
  fallen 
  off. 
  They 
  are 
  somewhat 
  thick 
  tapering 
  

   processes 
  arising 
  from 
  the 
  third 
  segment. 
  

  

  The 
  anterior 
  hooks 
  commence 
  on 
  the 
  fourth 
  segment, 
  

   have 
  a 
  sinuous 
  crown, 
  an 
  anterior 
  border 
  with 
  five 
  teeth, 
  

   the 
  first 
  being 
  smaller 
  than 
  the 
  second, 
  and 
  the 
  third 
  and 
  

   fourth 
  larger 
  than 
  the 
  second, 
  and 
  the 
  fifth 
  is 
  stouter 
  than 
  

   the 
  others 
  and 
  separated 
  by 
  a 
  gulf 
  from 
  the 
  rounded 
  prow. 
  

   The 
  posterior 
  hooks 
  are 
  considerably 
  smaller, 
  but 
  they 
  seem 
  

   to 
  have 
  the 
  same 
  structure. 
  The 
  bristles 
  are 
  simple 
  with 
  

   tapering, 
  slightly 
  curved, 
  and 
  winged 
  tips. 
  

  

  As 
  in 
  Malmgren^s 
  figure, 
  eight 
  segments 
  occur 
  behind 
  

   the 
  bristled 
  region, 
  but 
  in 
  the 
  present 
  example 
  two 
  thick 
  

   short 
  cirri 
  occurred 
  at 
  the 
  tip, 
  and 
  they 
  seemed 
  to 
  be 
  larger 
  

   than 
  the 
  dorsal 
  cirri 
  in 
  front 
  of 
  them 
  and 
  less 
  clavate 
  in 
  

   outline 
  than 
  the 
  dorsal 
  cirri 
  ; 
  for, 
  when 
  viewed 
  from 
  above, 
  

   the 
  dorsal 
  cirri 
  are 
  clavate, 
  with 
  a 
  narrow 
  base 
  and 
  rounded 
  

   or 
  bluntly 
  ovoid 
  tip. 
  The 
  last 
  setigerous 
  process 
  is 
  followed 
  

   by 
  a 
  short 
  dorsal 
  cirrus, 
  the 
  succeeding 
  cirri 
  having 
  a 
  more 
  

   elongated 
  stalk 
  and 
  a 
  more 
  distinctly 
  enlarged 
  tip. 
  The 
  

   ventral 
  uncinigerous 
  processes 
  are 
  bluntly 
  conical 
  papillae, 
  

   a 
  considerable 
  ridge 
  intervening 
  betw^een 
  them 
  and 
  the 
  

   dorsal 
  cirri. 
  

  

  The 
  sixth 
  is 
  Melinna 
  cristata, 
  Sars, 
  from 
  tlie 
  stomachs 
  of 
  

   cod 
  in 
  St. 
  Andrews 
  Bay, 
  the 
  Forth, 
  and 
  other 
  points 
  on 
  the 
  

   east 
  coast. 
  The 
  head 
  varies 
  in 
  aspect 
  according 
  to 
  the 
  con- 
  

   dition 
  of 
  the 
  tentacles. 
  In 
  contraction, 
  when 
  these 
  are 
  

   Avithdrawn 
  within 
  the 
  mouth, 
  the 
  anterior 
  end 
  presents 
  

   dorsal 
  ly 
  a 
  short 
  bluntly 
  rounded 
  process 
  with, 
  in 
  some, 
  a 
  

   notch 
  in 
  the 
  centre. 
  In 
  extrusion 
  of 
  the 
  tentacles 
  there 
  is 
  

   a 
  flattened 
  lamella, 
  from 
  the 
  anterior 
  edge 
  of 
  which 
  the 
  

   somewhat 
  clavate 
  tentacles 
  project. 
  The 
  tentacular 
  lobe 
  is 
  

   separated 
  by 
  a 
  deep 
  dorsal 
  groove 
  from 
  the 
  next 
  segment, 
  

   the 
  groove 
  passing 
  laterally 
  downward 
  to 
  the 
  mouth 
  in 
  fi'oat 
  

   of 
  the 
  posterior 
  lip. 
  The 
  branchise 
  arise 
  from 
  the 
  third 
  

   segment 
  as 
  two 
  basal 
  processes, 
  each 
  of 
  which 
  soon 
  splits 
  

   into 
  two 
  anterior 
  and 
  two 
  posterior 
  rather 
  long 
  tapering 
  

   organs, 
  the 
  largest 
  being 
  the 
  inner 
  of 
  the 
  anterior 
  pair 
  on 
  

   each 
  side, 
  the 
  two 
  outer 
  being 
  considerably 
  less 
  than 
  the 
  

   inner 
  posterior. 
  Tiie 
  posterior 
  lip 
  forms 
  a 
  lamella, 
  with 
  a 
  

   free 
  anterior 
  edge, 
  which 
  curves 
  upward 
  on 
  each 
  side 
  to 
  

   form 
  a 
  prominent 
  collar 
  at 
  the 
  angle 
  (thus 
  difl'eiing 
  from 
  

  

  