of Elasipoda, [571];
of Antedon rosacea, [583];
of its larva, [619];
of Dipleurula, [608];
of larva of Asterina gibbosa, [612];
of Balanoglossus, [617]
Pore-plate, of Echinus esculentus, [512];
of Strongylocentrotus droëbachiensis, [512];
of Endocyclica, [530] f.;
of petals of Echinarachnius parma, [544]