Lophophore, [579]

Lophophyllum, [406] f.

Louse, host for sexual process, etc., of Haemosporidian, [102] n.

Loxodes, [137], [144], [152] n.

Loxophyllum, [137], [152]

Lucernaria, [320], [321];

L. campanulata, [321]

Lucernariidae, [320]

Ludwig, on the blood-system of Asteroidea, [449];

on the axial sinus of Ophiuroidea, [487];