of Choanoflagellates, [122];
of Opalina, [123];
of Maupasia, [124];
of Sphaerella, [126];
of Volvox, [126];
of Noctiluca, [133]
—fusion- or zygote-, [150];
of Paramecium caudatum, [148]
—see also Meganucleus, Micronucleus, Gametonuclei, Nuclear apparatus
Nuda, [423]