﻿20 
  JUHLIN-DANNFELT, 
  ON 
  THE 
  UIATOMS 
  OF 
  THE 
  BALTIC 
  SE 
  A. 
  

  

  A. 
  robusta 
  Greg. 
  

  

  ScHM. 
  Atl. 
  Pl. 
  27, 
  fig:s 
  38-41. 
  

  

  Rare: 
  Södertelje 
  (Schm. 
  Atl.), 
  Upland: 
  Riddersholm. 
  

  

  Subfossil: 
  Bathing 
  silt 
  from 
  Dalarö. 
  

  

  var. 
  minor 
  n. 
  var. 
  

  

  Schm. 
  Atl. 
  Pl. 
  27, 
  fig. 
  38. 
  

  

  Pl. 
  II, 
  fig. 
  7. 
  

  

  DifFers 
  from 
  the 
  main 
  species 
  by 
  the 
  indistinctly 
  punctate 
  

   striai, 
  11 
  — 
  13 
  in 
  0,01 
  inm. 
  

  

  Rare: 
  Malmö, 
  Sölvesborg. 
  

  

  Subfossil: 
  Bathing 
  silt 
  from 
  Dalarö, 
  recent 
  silt 
  in 
  the 
  

   peatmosses 
  in 
  Roslagen. 
  

  

  Ä. 
  stauropliora 
  nov. 
  spec. 
  

  

  Plate 
  I, 
  fig. 
  9. 
  

  

  Little, 
  hyaline. 
  Side 
  view 
  eliptical 
  or 
  oval, 
  inner 
  börder 
  

   of 
  the 
  valve 
  straight 
  or 
  a 
  little 
  incurved. 
  Valve 
  with 
  a 
  

   stanros 
  that 
  widens 
  towards 
  the 
  dorsal 
  side. 
  Length 
  0,014 
  ram. 
  

   Unstriated. 
  Connecting 
  membrane 
  with 
  onelongitudinalfurrow. 
  

  

  Very 
  rare: 
  Vestervik. 
  

  

  A. 
  sulcata 
  (Bréb.) 
  Greg. 
  

  

  Greg. 
  Clyde 
  Pl. 
  V, 
  fig. 
  92. 
  Schmidt 
  Atl. 
  Pl. 
  26, 
  figs 
  46, 
  47. 
  

  

  Plate 
  II, 
  fig. 
  8. 
  

  

  Like 
  the 
  figs 
  in 
  Schmidts 
  Atlas, 
  difiers 
  from 
  Gregorts 
  

   quoted 
  figure 
  by 
  its 
  very 
  conspicuous 
  central 
  nodule. 
  Strise 
  

   very 
  fine. 
  

  

  Rare: 
  Gotland: 
  Slite, 
  Helsingfors, 
  Kalmar, 
  Vestervik. 
  

  

  A. 
  granulata 
  Greg. 
  

  

  Greg. 
  Clyde 
  PL 
  VI, 
  fig. 
  96. 
  

  

  Rare: 
  Vestervik, 
  Gotland: 
  Klintehamn. 
  

  

  A. 
  Icevis 
  Greg. 
  

  

  Greg. 
  Clyde 
  Pl. 
  IV. 
  fig. 
  74. 
  Plate 
  II, 
  fig. 
  5. 
  

  

  Rare. 
  Gotland: 
  Klintehamn, 
  Vestervik, 
  Kalmar. 
  

  

  Fam. 
  Cymbellese. 
  

  

  Cymbella 
  Ag. 
  

  

  C. 
  lanceolata 
  E. 
  

  

  Only 
  in 
  slightly 
  brackish 
  water. 
  Rostock, 
  Vaxholm 
  

   (Cleve), 
  Rathan 
  (Cleve). 
  

  

  