﻿BIHANG 
  TILL 
  K. 
  SV. 
  VET.-AKAD. 
  HANDL. 
  BAND 
  6. 
  N:0 
  21. 
  17 
  

  

  Fam. 
  Aehnantheae. 
  

   Achnanthes 
  Boet 
  St. 
  Vincent. 
  

  

  ^4. 
  loiigipes 
  Ag. 
  

  

  Geun. 
  Aret. 
  Diat. 
  p. 
  18. 
  

  

  Very 
  common 
  on 
  greater 
  algae 
  on 
  the 
  coasts 
  of 
  Skåne, 
  

   Blekinge 
  and 
  Gotland, 
  not 
  rare 
  in 
  tlie 
  Kalmar 
  Sound, 
  more 
  

   scareely 
  occurring 
  on 
  the 
  coasts 
  of 
  Södermanland 
  and 
  Upland 
  

   and 
  in 
  the 
  Finnish 
  bay, 
  not 
  noticed 
  in 
  the 
  Gulf 
  of 
  Bothnia. 
  

  

  v. 
  constricta 
  Gkun. 
  

  

  It 
  

  

  Gotland: 
  Ostergarn 
  (Cl.). 
  

  

  A. 
  suhsessilis 
  Ag. 
  

  

  Aret. 
  Diat. 
  p. 
  18. 
  VH. 
  D.B. 
  XXVI, 
  fig:s 
  21, 
  22. 
  

   Pillau 
  (ScHUM. 
  1867, 
  p. 
  44); 
  Travemlinde 
  (Ostsee 
  Exp. 
  

   1871, 
  p. 
  177), 
  Malmö, 
  Klintehamn. 
  

  

  A. 
  brevipes 
  Ag. 
  

  

  Aret. 
  Diat. 
  p. 
  18. 
  VH. 
  D. 
  B. 
  Pl. 
  XXVI, 
  fig:s 
  10—12. 
  

  

  Not 
  common: 
  Travemiinde, 
  Malmö, 
  Karlshamn. 
  

  

  A. 
  danica 
  (Flögel) 
  Grun. 
  

  

  Aret. 
  Diat. 
  p. 
  21. 
  

  

  In 
  the 
  Baltic 
  (Aret. 
  Diat.), 
  Helsingfors. 
  

  

  A. 
  lanceolata 
  (Bréb.) 
  Grun. 
  

  

  VH. 
  D. 
  B. 
  Pl. 
  XXVII, 
  fig:s 
  8—11. 
  

  

  Helsingfors, 
  Visby. 
  

  

  Fam. 
  Epithemieae. 
  

  

  Epithemia 
  Ehb. 
  

  

  E. 
  turgida 
  (Ehb.) 
  Kutz. 
  

  

  Utterly 
  common 
  in 
  all 
  parts 
  of 
  the 
  Baltic. 
  Never 
  failing 
  

   in 
  the 
  black-clay, 
  etc. 
  

  

  var. 
  Westermanni 
  (E.) 
  KtlTZ. 
  

   The 
  most 
  common 
  form. 
  

   var. 
  Vertagus 
  (KiJTz.) 
  Grun. 
  

   VH. 
  D. 
  B. 
  Pl. 
  XXXI, 
  fig. 
  7. 
  

   Very 
  rare. 
  Travemiinde. 
  

  

  E. 
  Zebra 
  (Ehb.) 
  Kutz. 
  

   var. 
  genuina 
  Grun. 
  

   Grun. 
  Verh. 
  Wien 
  1862, 
  p. 
  328. 
  

  

  Rare: 
  Upland: 
  Blidö. 
  Subfoss.: 
  Bathing 
  silt 
  from 
  Dalarö. 
  

  

  2 
  

  

  