Echinorhynchus of, [183]

Man, De, on free-living Nematodes, [157]

Manayunkia, [284], [339] n.

Mandible, of avicularium, [482], [524]

Manson, on Filaria, [149]

Manubrium, [210]

Marginal groove, of Leptoplana, [15]

Maricola, [30], [32], [42]

Marine, Rotifers, [226];

Oligochaeta, [366];