﻿50 
  JUHLIN-DANNFELT, 
  ON 
  THE 
  DIATOMS 
  OF 
  THE 
  BALTIC 
  SEA. 
  

  

  Common 
  on 
  greater 
  depth 
  in 
  Öresund 
  (Heib. 
  Consp.). 
  

   I 
  never 
  found 
  it 
  living 
  in 
  the 
  Baltic 
  but 
  found 
  it 
  in 
  mud 
  

   from 
  Sölvesborg 
  and 
  Kalmar. 
  

  

  Subfoss. 
  : 
  bathingsilt 
  from 
  Konneby. 
  

  

  Among 
  ScHUMANNS 
  Baltic 
  species 
  there 
  are 
  also: 
  

  

  M. 
  campylosira 
  Ehb. 
  

  

  M. 
  lineata 
  Ag., 
  which 
  are 
  quite 
  unknown 
  to 
  me. 
  

  

  Addeudum. 
  

  

  Schizonema 
  setacewii 
  K. 
  

   v. 
  polyclados 
  Grun. 
  

  

  Grun. 
  in 
  Botan. 
  Centr.-Blatt 
  ^^^^ 
  1880. 
  

   VH. 
  D. 
  B. 
  Pl. 
  XV, 
  f. 
  5. 
  

  

  Length 
  0,034 
  mm., 
  breadth 
  of 
  the 
  valve 
  0,oo6 
  mm. 
  Striae 
  

   17 
  in 
  0,0 
  1 
  mm. 
  Central 
  nodule 
  scarcely 
  visible. 
  

  

  Very 
  rare. 
  Helsingfors 
  in 
  slightly 
  brackish 
  water. 
  

  

  