on Heliozoa, [71];

on Radiolaria, [88];

on Suctoria, [161] n., [162]

Heteractinellida, [208]

Heterastridium, [283]

Heterocentrotus, [532], [542]

Heterocoela, [187] f.

Heterophrys, [71]

Heteropidae, [192]

Heterotrichaceae, [137], [153] f.;