on the classification of Holothuroidea, [570]
Lühe, figures of Lankesteria, [95]
Luidia, [467] f., [471], [477];
fossil, [475];
larva of L. ciliaris, [605]
Luminosity or phosphorescence of sea, due to Cystoflagellata, [132], [134] f.;
to Dinoflagellata, [132]
Lunule, [548]
Lychnorhiza, [325]
Lychnorhizidae, [325]