— margaritiferum, xli, 295.f
Euastrum rota, xli, 294.f
—, xli, 295f, 296f, 297.f
Eunotia arcus, xlii, 100.f
— diodon, xlii, 100.f
— pentodon, xlii, 100.f
— serra, xlii, 100.f
— tetraodon, xlii, 100f
—, xlii, 100f
Eupodiscus, characters of genus, xlviii, 203.