— 82 — 



20 Cocconeis Lorenziana Grün. 



21 Orthoneis splendida (Greg.) Grnn. 



22 < fimbriata (Bright.) Grün. 



23 Amphora spectabilis Greg. 



24 Epithemia marina Donk. 



25 Amphora exornata Jan. 



26 > crassa Greg. 



27 * marina Sm. 



28 * lineolata Ehr. 



29 — 30 Licmophora ovata (Sm.) Grün. 



1 Synedra Bacillus Greg. 

 2 — 3 Nitzschia maxima Grün. 

 4 Synedra undulata Sm. 

 *5 Nitzschia 



6 Pleurosigma formosum Sm. 



7 Synedra superba Kg. 



8 * Baculus Greg. 

 *9 Nitzschia 



10 Synedra fulgens Sm. var. Mediterranea Grün. 



11 * robusta Ralfs. 



12 Pleurosigma formosum Sm. var. 

 *13 Pleurosigma 



*14 Pleurosigma 



15 * elongatum Sm. 



16 * Balticum Sm. 



17 * formosum Sm. var. Balearicum Grün. 



18 * decorum Sm. 



19 * Americanum Perag. 



20 •* affine Grün. 



21 * rigidum Sm. 



22 * decorum Sm. 

 23 — 24 Amphiprora elegans Sm. 



25 Licmophora ovata (Sm.) Grün. 



26 Rhoicosigma Mediterraneum Cl. 



27 Amphiprora maxima Greg. 



28 Pleurosigma Balticum Sm. 



29 * affine Grün. 

 30 — 31 Nitzschia spathulifera Grün. 



32 * Sigma Sm. 



33 Amphiprora Mediterranea Grün. 



34 Toxonidea Gregoriana Donk. 



35 Pleurosigma Balticum Sm. 



36 Navicula Liber Sm. 



