of Acanthocephala, [179];

of Chaetognatha, [189];

of Rotifers, [218];

of Archiannelida, [243], [245];

of Polychaeta, [274] f.;

of Oligochaeta, [365];

of Leeches, [399];

of Gephyrea, [419], [432], [439], [447];

of Phoronis, [458];

of Polyzoa, [506], [509]—see also Life-history and Larva