Cyathaxoniidae, [394]

Cyatholiths, [114]

Cyathophyllidae, [394]

Cyathophyllum, [394]

Cycads, spermatozoa of, [38]

Cyclidium, [137]

Cyclocnemaria, [397]

Cyclomyaria, [325]

Cyclops, host of Choanophrya, [159];

of Rhyncheta and other Suctoria, [159] f., [162];