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]