The Cambridge natural history, Vol. 01 (of 10)

by Marcus Hartog; Sydney J. Hickson; E. W. MacBride; Igerna Brünhilda Johnson Sollas

Porpita, [309]

Porta, on reproduction of Radiolaria Acantharia, [86] n.

Porulosa (Holotrypasta), [76] f.

Portuguese Man-of-War, [300], [308]

Post-abdomen = fourth chamber of Monaxonic Radiolarian shell, [84]

Posterior dorsal process, of ciliated band, of Bipinnaria and Ophiopluteus, [606];

of Echinopluteus, [607];

of Auricularia, [608]

Posterior lateral process, of ciliated band, of Bipinnaria, Ophiopluteus, and Ophiothrix fragilis, [606];

of Echinopluteus, [607]