﻿BIHANG 
  TILL 
  K. 
  SV. 
  VET.-AKAD. 
  HANDL. 
  BAND 
  6. 
  N:0 
  21. 
  23 
  

  

  G. 
  angustatum 
  (K.) 
  Grun. 
  

   Norrtelje. 
  

  

  G. 
  dicliotomum 
  Sm. 
  

   Kathan 
  (Cl.). 
  

   var. 
  intricatum 
  (K.). 
  

   RathaB 
  (Cl.). 
  

  

  G. 
  tenellum 
  K. 
  

   Rathan 
  (Cl.). 
  

  

  G. 
  oUvaceum 
  Ehb. 
  var. 
  sallnum. 
  

  

  o 
  

  

  Ångermanland: 
  Näske 
  (Cl.). 
  

  

  G. 
  balticum 
  Cl. 
  

  

  VH. 
  D. 
  B. 
  Pl. 
  XXV, 
  fig. 
  24. 
  

  

  Utterly 
  common 
  in 
  all 
  parts 
  of 
  the 
  Baltic. 
  

  

  Rhoicosphenia 
  Grun. 
  

  

  Rh. 
  curvata 
  (K.) 
  Grijn. 
  

  

  Very 
  common 
  in 
  brackisli 
  and 
  in 
  almost 
  fresh 
  water, 
  

   especially 
  on 
  greater 
  algae. 
  

  

  Rh. 
  fracta 
  var. 
  haltica 
  ScHTM. 
  

   ScHTJM. 
  1867, 
  Pl. 
  I, 
  fig:s 
  19 
  a— 
  c. 
  

   Very 
  rare. 
  Gotland: 
  Fridhem. 
  

  

  Fam. 
  Naviculacese. 
  

  

  Navicula 
  Bory 
  S:t 
  Ving. 
  

  

  N. 
  gentilis 
  DoNK. 
  

  

  DoNK. 
  Brit. 
  Diat. 
  Pl. 
  XII, 
  fig, 
  1. 
  

  

  Very 
  rare. 
  Upland: 
  Blidö. 
  

  

  iV. 
  major. 
  KtJTZ. 
  

   ScHM. 
  Atl. 
  Pl. 
  42, 
  fig. 
  17. 
  

  

  In 
  scarcely 
  brackisli 
  water: 
  Rostock, 
  Vaxholm 
  (Cl.), 
  

   Norrtelje. 
  

  

  N. 
  viridis 
  Xitzsch. 
  

  

  ScHM. 
  Atl. 
  Pl. 
  42, 
  fig. 
  11. 
  

  

  Rare. 
  Rathan 
  (Cl.). 
  

  

  Subfoss. 
  : 
  Upland 
  : 
  recent 
  silt 
  in 
  Blidö. 
  

  

  v. 
  commutata 
  Grun. 
  

  

  Rare. 
  Kalmar. 
  

  

  Subfoss.: 
  Upland: 
  in 
  alluvial 
  clay 
  from 
  Järsö. 
  

  

  