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

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

of Echinus esculentus, [512], [513]

Genital rachis, of Asterias rubens, [452];

of Ophiothrix fragilis, [490];

of Echinus esculentus, [528];

of Antedon rosacea, [586]

Genital scale of Ophiothrix fragilis, [485]

Genital stolon, of Asterias rubens, [451];

of Ophiothrix fragilis, [489];

of Echinus esculentus, [528];

of Holothuria nigra, [567];