P. imbricata, elytron, [311]

Polynoina (= Polynoids), [309];

head, [262];

chaetae, [266], [267];

jaw, [270];

intestine, [271]; eggs, [275];

sexual dimorphism, [276] n.;

tubes, [285];

colours, [291], [292];

protective resemblance, [294];