﻿32 
  JUHLIN-DANNFELT, 
  ON 
  THE 
  DIATOMS 
  OF 
  THE 
  BALTIC 
  SEA. 
  

  

  area 
  round 
  the 
  central 
  nodule. 
  Striae 
  14 
  in 
  0,01 
  mm. 
  L. 
  

   0,04 
  mm., 
  br. 
  0,009 
  mm. 
  

   Rare: 
  Kalmar. 
  

  

  Stauronels 
  Ehb. 
  

  

  S. 
  Phoenicenteron 
  Ehb. 
  

   Norrtelje 
  in 
  almost 
  fresli 
  water. 
  

  

  S. 
  Gregorii 
  Ralfs. 
  

  

  S. 
  amphioxys 
  Geeg. 
  Aret. 
  Diat. 
  Pl. 
  III, 
  fig. 
  64. 
  

  

  Rare: 
  Norrtelje, 
  Karlshamn, 
  Kalmar. 
  

  

  S. 
  anceps 
  Ehb. 
  

  

  VH. 
  D. 
  B. 
  Pl. 
  IV, 
  fig:s 
  4, 
  5. 
  

  

  Harbour 
  of 
  Karlshamn. 
  

  

  S. 
  salina 
  Sm. 
  

  

  VH. 
  D. 
  B. 
  Pl. 
  X, 
  fig. 
  16. 
  

  

  Södermanland: 
  Häringe. 
  

  

  var. 
  latior 
  nov. 
  var. 
  

  

  Plate 
  III, 
  fig. 
  21. 
  

  

  Valve 
  broadly 
  lanceolate, 
  with 
  a 
  little 
  produced 
  ends. 
  

  

  Helsingfors. 
  

  

  S. 
  aniplioroides 
  Grun. 
  

   Araphora 
  constricta. 
  

  

  Malmö 
  (Cl. 
  & 
  Moll. 
  Diat. 
  N:o 
  27). 
  In 
  the 
  Baltic 
  (Schtim. 
  

   1867). 
  

  

  *S. 
  hyalina 
  nov. 
  spec. 
  

  

  Plate 
  III, 
  fig. 
  20. 
  

  

  Hyaline. 
  Valve 
  linear-lanceolate. 
  Stauros 
  linear, 
  reaching 
  

   the 
  margin. 
  Striae 
  very 
  fine, 
  only 
  a 
  few 
  ones 
  near 
  the 
  stan- 
  

   ros 
  conspicuous. 
  Length 
  0,067 
  — 
  0,07 
  mm., 
  breadth 
  of 
  stauros 
  

   0,001 
  mm. 
  

  

  Rare: 
  Kalmar, 
  Helsingfors 
  (common). 
  

  

  S. 
  platystoma 
  Ehb. 
  

  

  Gotland: 
  Ostergarn 
  (Aret. 
  Diat. 
  p. 
  14). 
  

  

  S. 
  Legrmien 
  E. 
  f. 
  minuta. 
  

  

  Gotland 
  (Cl. 
  & 
  Moll. 
  Diat. 
  N:o 
  86). 
  

  

  Scoliopleura 
  Grun. 
  

  

  aS. 
  Jenneri 
  Grun. 
  

  

  In 
  the 
  Baltic 
  (Schum. 
  1867). 
  

  

  