162 — 



10. 



11. 



4 Cocconeis decipiens Cl. 



5—6 



Pleurosigma affine var. Marylandicum Grün. 



7—9 



Navicula Hennedyi Sm. var. 



10 



Lyra 



Ehr. var. 



11-16 



* Crabro Ehr. var. multicostata Grün, 



17 



= Fischeri A. Schm. 



18 



= Gräffei Grün. 



19—20 



* distans Sm. 



21 



Actinoptychus 



Praetor A. Schm. 



22 



!S 



Marylandicus Bright. 



*23 



Actinoptychus 





24 



* 



vulgaris Schum. 



25 



# 



splendens (Shad.) Ralfs. 



26 



s 



Mölleri Grün. 



27-28 



* 



vulgaris Schum. 



29—30 



tf 



undulatus Ehr. 



*31 



Actinoptychus 





*1 



Actinoptychus 



' 



2 



= 



pellucidus Grün. var. 



3 



s 



undulatus Ehr. 



4 



s 



nitidus Grev. 



5 



s 



biformis Brun. 



*6— 9 



Actinoptychus 





*10 



Actinoptychus 





11 



* 



undulatus Ehr. 



12-14 



* 



pellucidus Grün. 



*15 



Actinoptychus 





*1 



Actinoptychus 





2 



* 



pellucidus Grün. 



*3 



Actinoptychus 





4 



s 



pellucidus Grün. 



*5 



Actinoptychus 



# 



*6 



Actinoptychus 





*7 



Actinoptychus 





*8 



Actinoptychus 





12. *1 Actinoptychus Heliopelta Grün. v. versicolor Brun. 



2 * pellucidus Grün. var. 



*3 Actinoptychus 



4 * pellucidus Grün. 



5 = trivolva Brun. 



6 * vulgaris Schum. 



