Nemertodrilus, [360]

Nemertoscolex, [444]

Neodrilus, [384]

Neorhynchidae, [184]

Neorhynchus clavaeceps, [178], [181], [184];

N. agilis, [184]

Nephelis, [392] f., [397], [399], [401], [403], [405]

Nephridium, of Archiannelida, [243], [244];

of Nereis, [253];

of Arenicola, [253], [254];