of Holothuroidea, [567] f.;

of Pelmatozoa, [580];

of Crinoidea, [589] f.

Clathria, [225]

Clathrina, [186], [221], [231];

C. blanca, larva of, [227]

Clathrinidae, [185] f.

Clathrissa, [223]

Clathrozoon, [277], [279];

C. wilsoni, [279]