Sea-mat, [466], [477]

Sea-mouse, [312]

Secondary orifice, [522], [524]

Sedentaria, [285]

Segment, [241];

of Nereis, [246], [247]

Seison, [226]

Seisonaceae, [204], [216], [220] n., [225], [227]

Seisonidae, [226]

Selenaria, [518];