in Flagellata, [113];
of Choanoflagellates, [121], [122];
in Vorticellidae, [158];
of Volvocidae, [126] f.;
of Pandorina, [128] f.;
of Eudorina, [129]
Colour, red, of lakes and ponds, often due to Dinoflagellata, [131]
Coloured vegetal nutrition, [36] f.
Colouring matter of chromatophores of Flagellates, [115] n.
Colpidium, [137];