Feeler, of Holothuria nigra, [561] f., [566];

of Holothuroidea, [568];

of Dendrochirota, [568], [572];

of Synaptida, [568], [575];

of Molpadiida, [568], [575]

Female gamete, [33];

of Pandorina, [128] f.;

of Acystosporidae, [104] f.;

of Peritrichaceae, [151], [157]

—see also Megagamete, Oosphere