STUDIES ON EUNOTIA SPECIES IN THE CLASSICAL “DEGERNÄS MATERIALS” HOUSED IN THE SWEDISH MUSEUM OF NATURAL HISTORY

Ehrenberg established the genus Eunotia from Degerna Diatomite in 1837 and described eight species: E. arcus, E.faba, E. diodon, E. triodon, E. diadema and E. serra. In 1854 he added two more, E. bactriana and E. hexaglyphis. We have examined classical material labelled “Degernas” housed in the Swedish Museum of Natural History, which contains 37 taxa, including 10 Eunotia species. The species we observed are extremely similar to those reported by Ehrenberg.