Medium gametes in Pandorina, [128] f.
Medusa, [250];
of Millepora, [259] f.;
of Gymnoblastea, [262] f.;
of Calyptoblastea, [277] f.;
in Trachomedusae, [288] f.;
in Narcomedusae, [295] f.;
fresh-water, [292] f.;
of Siphonophora, [302], [309];
in Scyphozoa, [310] f.