Calcarea, [184] f.
Calcareous ooze, [114]
Calcareous ring, of Holothuria nigra, [566];
of H. cinerascens, [567];
of Phyllophorus rugosus, [567]
Calcaromma calcarea, [83]
Calcituba, [59];
growth of, [64];
pylomes of, [64]
Calices of Madreporaria, [371]