Choanosome, [170]

Chondrilla, spicules of, [233]

Chondrioderma, [90];

C. diffusum, [93]

Chondrocladia, [216]

Chondrophoridae, [301], [308]

Chone, [213], [214]

Choristida, [212]

Chromatin, [6] f.;

function of, in cell-division, [24] f.;