of Echinolampas, [554];

of Neolampas, [554];

of Holothuria nigra, [560];

of Antedon rosacea, [582];

of Dipleurula larva, [604];

of Asterina gibbosa, [611]

Aphodal, [210]

Aphrothoraca, [70]

Aplanospore, [31]

Aplysilla, [196]