of Ophiothrix fragilis, [490];

of Echinus esculentus, [528], [529]

Abortive nuclei, of Myxosporidiaceae, [107]

Abyla, [307]

Abylinae, [307]

Abyssal, Radiolaria, [76];

Sponges, [239] f.

Acamptogorgia, [356]

Acanella, [353];

A. simplex, [353]