chaetae, [268]

Notommata, [217], [224], [226]

Notommatidae, [200], [205], [207], [215], [223], [224]

Notophyllum, colour, [293]

Notopodium, [246], [247], [264], [265], [268]

Notops, [200], [224]

Notopygos, [259]

Nuchal cirri of Eunicidae, [318];

Nuchal organ—see Ciliated pits

Ocnerodrilus, [383]