Cerebratulus, [101], [111], [114];
British species, [111]
Cerfontaine, on Earthworms, [349], [350]
Cestoda, characters of the group, [5], [74];
nature of, [76] f.;
occurrence, [77]-82;
life-histories, [83];
structure and development, [84]-89;
synoptic table of, [89] f.;
classification, [91]