﻿78 
  Prof. 
  M'Intosh's 
  Notes 
  from 
  the 
  

  

  exact 
  conditions 
  of 
  the 
  ventral 
  furrows 
  diverges 
  from 
  that 
  

   seen 
  in 
  the 
  accompanying 
  photograph* 
  of 
  an 
  adult 
  female 
  

   lately 
  stranded 
  at 
  Crail^ 
  on 
  the 
  Forth, 
  and 
  measuring 
  30 
  feet 
  

   in 
  length. 
  For 
  instance, 
  in 
  the 
  figure 
  given 
  by 
  Drs. 
  Carte 
  

   and 
  Macalister 
  f, 
  the 
  furrows 
  preserve 
  a 
  nearly 
  uniform 
  

   arrangement 
  from 
  the 
  symphysis 
  of 
  the 
  mandible 
  to 
  the 
  

   navel, 
  thus 
  resembling 
  corduroy, 
  the 
  figure 
  being 
  less 
  accurate 
  

   than 
  the 
  description, 
  which 
  is 
  that 
  beneath 
  the 
  mandible 
  

   the 
  furrows 
  '^ 
  were 
  flat 
  and 
  inconspicuous, 
  but 
  as 
  they 
  

   extended 
  down 
  towards 
  the 
  thoracic 
  region 
  they 
  became 
  

   enlarged 
  and 
  much 
  more 
  numerous 
  ; 
  subsequently, 
  as 
  they 
  

   approached 
  the 
  abdominal 
  parietes, 
  they 
  decreased 
  in 
  number 
  

   but 
  increased 
  in 
  width, 
  being 
  finally 
  lost 
  in 
  the 
  neighbouring 
  

   skin/' 
  Tlie 
  folds 
  are 
  seen 
  in 
  the 
  photographs 
  given 
  by 
  

   Sir 
  William 
  Turner, 
  and 
  in 
  one 
  % 
  a 
  single 
  split 
  is 
  observed. 
  

   This 
  distinguished 
  anatomist 
  states 
  that 
  " 
  the 
  average 
  breadth 
  

   of 
  the 
  ridges 
  between 
  the. 
  furrows 
  immediately 
  below 
  the 
  

   angle 
  of 
  the 
  mouth 
  was 
  about 
  1 
  inch, 
  but 
  further 
  back 
  some 
  

   were 
  as 
  wide 
  as 
  2 
  inches.^' 
  Mr. 
  Perrin 
  § 
  specially 
  notes 
  

   that 
  the 
  folds 
  did 
  not 
  decussate 
  in 
  a 
  female 
  of 
  13 
  feet 
  or 
  

   decrease 
  in 
  number 
  from 
  before 
  backward. 
  As 
  no 
  mention 
  

   is 
  made 
  of 
  the 
  furrows 
  splitting, 
  it 
  is 
  possible 
  that 
  the 
  con- 
  

   dition 
  in 
  the 
  female 
  stranded 
  at 
  Crail 
  may 
  be 
  exceptional. 
  

   The 
  total 
  number 
  of 
  the 
  furrows 
  could 
  not 
  be 
  counted, 
  but 
  

   the 
  majority 
  are 
  shown 
  in 
  the 
  photograph, 
  viz. 
  about 
  forty 
  

   (PI. 
  V.j. 
  Just 
  below 
  the 
  eye 
  two 
  of 
  the 
  narrow 
  ridges 
  fuse 
  

   and 
  continue 
  to 
  the 
  flipper, 
  which 
  in 
  the 
  specimen 
  had 
  

   been 
  removed, 
  so 
  that 
  the 
  downward 
  curvature 
  of 
  the 
  furrows 
  

   at 
  the 
  axilla 
  could 
  be 
  distinctly 
  seen. 
  In 
  the 
  same 
  way 
  the 
  

   two 
  furrows 
  following 
  the 
  adjoining 
  one 
  fused 
  just 
  before 
  the 
  

   anterior 
  edge 
  of 
  the 
  flipper. 
  An 
  entire 
  ridge 
  followed, 
  

   widening, 
  like 
  the 
  rest, 
  behind 
  the 
  flipper, 
  and 
  disappearing 
  

   on 
  the 
  side 
  of 
  the 
  whale. 
  The 
  next 
  two 
  narrow 
  ridges 
  from 
  

   the 
  angle 
  of 
  the 
  jaw 
  fused 
  slightly 
  in 
  front 
  of 
  the 
  previous 
  

   pair, 
  the 
  single 
  ridge 
  widening 
  and 
  disappearing 
  as 
  before. 
  

   An 
  entire 
  ridge 
  came 
  next, 
  followed 
  by 
  another 
  similar 
  in 
  

   front, 
  but 
  its 
  broad 
  part 
  behind 
  the 
  flipper 
  was 
  split 
  into 
  

   two 
  moderate 
  ridges, 
  the 
  fork 
  nearly 
  reaching 
  its 
  edge. 
  

   The 
  succeeding 
  ridge 
  was 
  formed 
  of 
  two 
  narrow 
  ones, 
  

   which 
  united 
  in 
  a 
  line 
  with 
  the 
  eye. 
  Three 
  ordinary 
  and 
  

   simple 
  ridges 
  followed, 
  then 
  came 
  another 
  wdiich, 
  a 
  little 
  

   behind 
  a 
  line 
  wdth 
  the 
  eye, 
  split 
  into 
  two, 
  which 
  coursed 
  

  

  * 
  Taken 
  by 
  Mr. 
  A. 
  W. 
  Brown, 
  of 
  the 
  Gatty 
  Marine 
  Laboratory, 
  

   t 
  Pliilos. 
  Trans, 
  vol. 
  clviii. 
  pi. 
  iv. 
  fig'. 
  1. 
  

  

  X 
  ' 
  Marine 
  Mammals, 
  University 
  Museum, 
  Edinburgh,' 
  p. 
  60 
  (1912). 
  

   § 
  Proc, 
  Zool. 
  Soc. 
  1870, 
  p. 
  867. 
  

  

  