Lithodomous, Polychaeta, [287]

Lithographic slate, fossil Polychaeta from, [301], [302]

Liver, -fluke, [51];

-rot, [68]

Locomotion, of Planarians, [9], [10], [36];

of Polyclads, [22] f.;

of Nemertinea, [114], [115];

of Chaetognatha, [190];

of Rotifers, etc., [206], [235];

of Dinophilus, [243];