Cephalopods, parasites of, [78], [92];

list of, containing Dicyemids, [94]

Cephalosiphon, [205], [221]

Cephalothrix, [112]

Cercaria, [13], [65], [67], [71] f.;

C. macrocerca, [72];

C. cystophora, [72]

Cercyra, [42]

Cerebral organ, of Nemertinea, [107];

of Gephyrea, [417]