Heat-rigor, [22]

Heleopera, [52];

test of, [55]

Heliaster, [474]

Heliasteridae, [453], [454], [474]

Heliolites, [346]

Heliolitidae, [346]

Heliopora, [330], [334], [337], [345] f.

Helioporidae, [346]

Heliozoa, [50], [70] f.;