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Diatoma obliquatum, Lyngb. . . . Isthmia. nervosa, Klz. 



— parasilicum, Ag Synedra ulna, Ebr. 



— ramosum, Ag Synedra fulgens, Ag. 



— tabulalum, Ag Synedra tabulata, Ktz. 



— teniaïforme, Ag Grammatopbora marina, Ktz. 



— variegatum, Ag Synedra lœvis, Ehr. 



Denticula crassula, Naeg. Dent, inflata, W. Sm. 



— Kutzingii, Grun Dent, oblusa, "W. Srn. 



— oblusa, Ktz Diatoma vulgare, Bory. 



Denticula staurophora, Greg. . . . PlagiogrammaGregoriar.um, Grev. 



— tabellaria, Grun Grunowia, Rab. 



— undulata, Ktz Cymatopleura elliptica. W. Sm. 



— — Cramer. . . . Staurosyra parasitica, Petit. 

 Desmogonium Kutzingii, Rab. . . Synedra rumpens, Grun. 

 Dimeregramma rnutabile, Pritch.. Staurosira naulabilis, Petit. 



— tabellaria Pritch.. Staurosira construens, Petit. 



Diomphala clava Herculis, Ehr.. . Gomphonema geminatum, Ag. 



Diploneis I\:i\ icula. 



Doryphora Bœckii, W. Sm. . . . Cocconema lanceolatum, Ehr. , var. 



— elegans, Roper Podocystis adriatica, Ktz. 



Echinellacircularis, Grev Meridion circulare, Ag. 



— cuneata, Lyngb Podosphenia comraunis, Heib. 



— flabellata, Carm. .... Licmophora, Ag. 



— geminata, Lyngb Gomphonema, Ag. 



— olivacea, Lyngb Gomphonema, Klz. 



— paradoxa, Lyngb Podosphenia communis et paradoxa. 



Encyonema maximum, Warlm. . Eue. prostratum, Ralfs. 



Endictya cribosa Gampylodiscus cribrosus, W. Sm. 



Entomoneis alata Amphiprora, Ktz. 



Epithemia adnata, Breb Ep. Zébra, Ktz. 



— intermedia, Hilse. . . . Ep. Argus, Ktz. 



— librile, Ehr Ep. granulata, Ktz. 



— textricula. Ktz Ep. gibberula, Ktz. 



Eunotia Epithemia partim. 



Eunolia amphyoys, Ehr Nitzschia, W. Sm. 



— arcus. W. Sm Ceratonei*, Ktz. 



