Pl. 6. — 10. Cyclotella Cleve-Euleriana n. sp. 11. Cyclotella Mauchaiana n. sp. Discus. 12. Cyclotella Mauchaiana n. sp. Discus. 13. The same. 14. The same. 15. Gomphonema Herrmanniany n. sp.. 16. The areolae on the side of the sterraster are running in a

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« Pl. 6. — 10. Cyclotella Cleve-Euleriana n. sp. 11. Cyclotella Mauchaiana n. sp. Discus. 12. Cyclotella Mauchaiana n. sp. Discus. 13. The same. 14. The same. 15. Gomphonema Herrmanniany n. sp.. 16. The areolae on the side of the sterraster are running in a », Images de la Bibliothèque centrale du Muséum national d’histoire naturelle, ID : 10670/1.i2dhpo


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