Cellepora, [518], [527], [528], [529];

avicularia, [483], [517]

Celleporella, [529]

Cellularia, [518], [527]

Cellularina, [518]

Cement-glands, of Rotifers, [205]

Cephalic slits, of Nemertinea, [101], [104], [107], [111], [112]

Cephalisation, in Polychaeta, [263];

in Oligochaeta, [377]

Cephalodiscus, [461] f.