Gymnomyxa, [49] n.

Gymnophrys, [58]

Gymnosphaera, [70], [73]

Gymnostomaceae, [137];

predaceous, trichocysts of, [143];

mouth and pharynx of, [145];

noteworthy members of, [152]

Gyractis, [380]

Häcker, on skeleton of Radiolaria, [82] n.

Haddon, [382]