of bisexual Protozoa and most Metazoa comparable with Flagellata, [109];

of Volvox globator, [127] f.;

of Eudorina, [129]

Spermatogone (= a brood-mother-cell, whose offspring are sperms) of Coccidiaceae, [100] f.;

of Volvox globator, [127] f.;

of Eudorina, [129];

of Acystosporidae, [104] f.

Spermatozoon, [17], [18]

—see also Sperm

Sperosoma, [536]