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Keywords from Image Description:
Diatomaceae of Philadelphia Plate . follows PLATE Fig Eunotia major Wm Sm Rab Eunotia gracilis Ehr Rab Eunotia major Wm Sm Rab intermediate form Eunotia prrupta Ehr Eunotia pectinalis Kuetz Eunotia pectinalis var undulata Ralfs Eunotia pectinalis var solierolii Kuetz Eunotia luna Ehr var Eunotia pectinalis var ventricosa