of Oligochaeta, [369] f.;

of Leeches, [405];

of Gephyrea, [426] f., [432], [441] f.;

of Phoronis, [460];

of Polyzoa, [492] f., [504], [519]

Geonemertes, [101];

description of G. chalicophora, [117]

Geoplana, [33], [38], [42]

Geoplanidae, [35], [42]

Geoscolicidae, [351], [362], [386]