Combs of Ctenophora, [141], [412]

Comitalia, [201]

Commensals, of Heliozoa, [73];

of Radiolaria, [80], [86] f.;

of Infusoria, [153] f.;

—see also Zoochlorella, Zooxanthella, and Symbiosis

Comminator muscles of Aristotle's lantern, [526]

Commissure of radial cords of aboral nervous system of Antedon rosacea, [585]

Compasses (or radii) of Aristotle's lantern, [526]

Conant, [319]