8, 



ll. 



8, 



11. 19. 



8, 



28. 



8, 



31. 



8, 



34—36. 



8, 



31. 



9, 



51.52. 



9, 



63. 



10, 



1. 



10. 



20—23. 



12, 



48. 



12, 



61. 



13, 



18. 19. 



13, 



31. 40. 



14, 



23. 



IT), 



11. 



16, 



4. 



16, 



6. 



1«. 



10. 



25, 



4. 



25. 



5- 



25, 



6. 



25, 



9. 



25. 



14. 



25, 



24. 



25, 



35. 



25. 



61. 



25, 



18. 19. 



25. 



85. 86. 



26, 



40. 



2(1. 



59. 



28. 



1. 



28. 



11. 



28, 



20. 



28, 



21. 



28. 



23. 



31, 



10. 12. 



32, 



23. 



37, 



8. 



39. 



13. 



39, 



21.31. 



40. 



12. 



40, 



14. 



40, 



24. 



I. 



Diploneis niteseens v. serratula Grün. 



— Mauleri v. borussica Cl. 



— Cynthia v. miuuta Cl. 



— aestiva Douk. 



— vacillaus A. S. 



— v. delicatula Cl. 

 Cymbella heteropleura v. minor Cl. 



— naviculiformis Auersw. 



— aspera E. 



— helvetica K. 

 Diploneis Schmidti Cl. 



— gemmatula v. Grunowi Cl. 



— Schmidti Cl. 



? — gemmatula v. Grunowi Cl. 

 Campylodiscus birostratus Deby. 

 biseriatus Deby. 

 Weissflogi Deby. 

 taenoides Deby. 

 — Rattrayanus Deby. 



Amphora magellanica Petit. 



Mittelform zw. Amphora angusta v. ventricosa Greg, 

 u. — — v. Eulensteiui Grün. 



Amphora angusta v. ventricosa Greg. 



— cymbiformis Cl. 



' — angusta (Greg.) Cl. v. 



— turgida Greg. 



— Eunotia Cl. 



1 — alata Perag. 



— tetragibba Cl. 



— staurophora (Castr.) Cl. 



— Ovum Cl. 



— acutiuscula K. 



' — ovalis v. libyca E. 



— crassa v. soelswigiensis Pet. 



— gigantea v. obscura Cl. 

 1 — crassa v. spurica Cl. 



1 — — v. modesta Cl. 



Auliscus lucidus Rattr. 



— caelatus v. mergens Rattr. 

 Aulacodiscus margaritaceus v. Moelleri Grün. 

 Amphora milesiana Greg. 



— egregia (E.) A. S. 



— obtusa v. typica Cl. 



— bigibbosa Cl. 



1 — delphinea v. jamaliensis Cl. & Grün. 



