— 81 — 



9—10 Biddulphia Baleana Ehr. 

 11 — 12 Triceratium orbiculatum Shad. 

 13 — 15 Biddulphia pulchella Gray. 

 16 Cerataulus turgidus Ehr. 



2. 1—2 Biddulphia reticulata Roper. 



3 Triceratium reticulatum Grün. 



4 * Grunowii Jan. var. 

 5 — 7 Amphitetras nobilis Grev. 



8 Triceratium parallelum Grev. 



9 * sculptum Shad. 



10 * alternans Ehr. 



11 * bicorne GL 



12 * dubium Bright. 

 *13 Triceratium 



14 Anaulus Mediterraneus Grün. 

 15 — 16 Biddulphia aurita Breb. 

 17—18 * Toumeyi Bau. 



19 — 21 * regina Sm. 



22 Anaulus Mediterraneus Grün. 

 23 — 24 Grammatophora serpentina Ehr. 



25 * marina (Kg.) Sm. 



26 * oceanica Ehr. 



27 * undulata var. gibba Grün. 



28 Tessela interrupta Kg. 



29 — 30 Rhabdonema Adriaticum Kg. 



3. *1 — 2 Mastogloia 



3 Navicula Northumbrica Donk. 



4 Grammatophora serpentina Ehr. 



5 Epithemia Musculus Kg. 



6 Glyphodesmis Williamsoni (Sm.) Grün. 



7 Fragilaria dubia Grün. 



8 Amphora inflata Grün. 



9 * costata Sm. 



10 * acuta Greg. 



11 Podocystis Adriatica Kg. 



12 Euphyllodium spathulatum Shad. 

 13 — 14 Achnanthes longipes Ag. 



15 Plagiodiscus nervatus Grün. 



16 Cocconeis pseudomarginata Greg. 



17 Mastogloia apiculata Sm. 



18 Cocconeis Scutellum Ehr. 



19 * distans Greg. 



6 



