﻿356 
  

  

  Mr. 
  A. 
  G. 
  Bennett. 
  On 
  the 
  

  

  Baleenoptera 
  musculus 
  et 
  B. 
  pliysalus. 
  South 
  Shetlauds 
  (found 
  in 
  all 
  

   Mr. 
  Bennett's 
  samples). 
  

  

  The 
  striae 
  on 
  the 
  upper 
  valve, 
  under 
  the 
  best 
  conditions 
  and 
  with 
  oblique 
  

   light, 
  could 
  not 
  be 
  resolved 
  into 
  dots, 
  but 
  had 
  a 
  strong 
  appearance 
  of 
  beiug 
  

   punctate. 
  The 
  material 
  examined 
  did 
  not 
  permit 
  any 
  description 
  of 
  the 
  cell- 
  

   contents. 
  Minute 
  examination 
  of 
  the 
  figure 
  will 
  show 
  certain 
  markings 
  

   which 
  are 
  inherent 
  to 
  the 
  process 
  of 
  reproduction, 
  and 
  are 
  not 
  intended 
  to 
  

   represent 
  structure 
  seen 
  in 
  the 
  specimens. 
  As 
  explained 
  above, 
  no 
  dotted 
  

   structure 
  could 
  be 
  made 
  out, 
  and 
  the 
  lower 
  valve 
  within 
  the 
  border 
  is 
  here 
  

   shown 
  far 
  too 
  strongly 
  striate. 
  

  

  O 
  o 
  

  

  I 
  desire 
  to 
  thank 
  Mr. 
  E. 
  Ford 
  for 
  kindly 
  making 
  the 
  drawings 
  which 
  

   illustrate 
  this 
  note. 
  

  

  Navicula 
  viridis 
  (Nitzsch) 
  Ehrb. 
  

   Ehrenberg, 
  1838. 
  1 
  Infus.,' 
  p. 
  182, 
  Plate 
  13, 
  fig. 
  16 
  (in 
  part), 
  Plate 
  21, 
  

   % 
  12. 
  

  

  Kiitzing, 
  1844 
  'Bacill.,' 
  p 
  97, 
  Plate 
  4, 
  fig. 
  18 
  ; 
  Plate 
  30, 
  fig. 
  12. 
  

   Petit, 
  1888. 
  ' 
  Mission 
  Scientif. 
  du 
  Cap 
  Horn,' 
  vol. 
  5, 
  p. 
  121. 
  

   Mann, 
  1907. 
  ' 
  Diat, 
  of 
  the 
  Albatross,' 
  p. 
  359. 
  

  

  Bacillaria 
  viridis 
  Nitzsch, 
  1817. 
  'Neue 
  Schrift. 
  Naturf. 
  Ges. 
  Halle,' 
  vol. 
  3, 
  

   p. 
  97, 
  Plate 
  4, 
  fig. 
  1-2. 
  

  

  Found 
  only 
  in 
  the 
  tube 
  containing 
  the 
  material 
  which 
  had 
  been 
  treated 
  

   with 
  nitric 
  acid. 
  

  

  It 
  is 
  quite 
  impossible 
  to 
  define 
  the 
  exact 
  limits 
  between 
  this 
  species 
  and 
  

   Navicula 
  major 
  Kutz, 
  and 
  these 
  specimens 
  might 
  be 
  referred 
  to 
  the 
  latter 
  

   with 
  almost 
  equal 
  reason. 
  

  

  The 
  name 
  has, 
  however, 
  been 
  chosen 
  as 
  the 
  oldest 
  specific 
  designation 
  which 
  

   adequately 
  describes 
  the 
  organism, 
  and 
  also 
  since 
  this 
  species 
  has 
  already 
  been 
  

   reported 
  from 
  Cape 
  Horn 
  by 
  Petit 
  (loc. 
  cit.). 
  

  

  This 
  species 
  is 
  normally 
  found 
  in 
  fresh 
  water 
  and 
  the 
  above 
  is 
  the 
  only 
  

   known 
  record 
  where 
  this 
  Diatom 
  has 
  been 
  found 
  living 
  in 
  salt 
  water. 
  It 
  has 
  

   been 
  recorded 
  from 
  marine 
  soundings 
  (see 
  Mann, 
  loc. 
  cit.) 
  but 
  this 
  fact 
  does 
  not 
  

   necessarily 
  prove 
  a 
  marine 
  habitat 
  when 
  it 
  was 
  a 
  living 
  organism. 
  

  

  As 
  explained 
  above, 
  it 
  is 
  not 
  quite 
  certain 
  that 
  this 
  and 
  the 
  following 
  

   - 
  species 
  were 
  really 
  derived 
  from 
  the 
  skin 
  of 
  a 
  whale. 
  

  

  Navicvda 
  sp. 
  

  

  Pinnularia 
  interrupta 
  W. 
  Sm. 
  

  

  > 
  Smith, 
  W., 
  1 
  Brit. 
  Diat.' 
  1853, 
  p. 
  59, 
  Plate 
  19, 
  fig. 
  184; 
  1856, 
  p. 
  96. 
  

   Cleve, 
  P. 
  T., 
  1893, 
  ' 
  Kongl. 
  Sv. 
  Vet. 
  Akad. 
  Handl.,' 
  27 
  3 
  , 
  p. 
  76. 
  

  

  