larva, [274], [276], [300];

provisional chaetae, [274]

Polychoerus, [49];

development of, [44] n.

Polycirrus, [330];

habits of, [285];

P. aurantiacus, warning colours, [294];

phosphorescence, [295];

P. haematodes, coelomic corpuscles, [253]

Polycladida (Polyclads), [4] f., [7];