Diatomaceae, skeleton of, [84];

symbiotic with Collosphaera, [86]

Diatomin, [86];

(?) in coloured Flagellates, [115] n.

Dichoporita, [598], [599]

Dicoryne, [268], [270]

Dictyoceratina, [220]

Dictyocha, [110]

Dictyochida (= Silicoflagellata, [110]), [79];

in Phaeocystina, [86] f.