on Nemertinea, [99];

on Nematoda, [136], [139], [140], [142], [146], [163];

on Hirudinea, [395]

Leucochloridium, [65], [66]

Leucocytes, of Polychaeta, [252]

Leucodore—see Polydora

Leydig, on Rotifers, [198]

Lias, Serpulids in, [301]

Libyodrilus, [364], [385], [386]

Lichenopora, [518], [531]