Medusome, [250], [251], [252]

Megagamete, [33];

see also Female gamete, Oosphere

Megalactis griffithsi, [384]

Megalosphere, megalospheric, [67] f.

Megamastictora, [183], [184] f.

Meganucleus, [136], [139] f., [144], [149] f.;

degeneration of, in conjugation, [148] f.;

new formation of, in conjugation, [148], [151];

of Stylonychia mytilus, [139] f.;