of Echinus esculentus, [524];

of Echinarachnius parma, [545];

of Echinocardium cordatum, [551]

Sphaeroidea, [77], [77] f.

Sphaeronectes, [306]

Sphaeronectinae, [306]

Sphaerophracta, [78], [80]

Sphaerozoea, [77] n.

Sphaerozoidae, [85]

Sphenopus, [404]