Marshall, on Pennatulacea, [359] n.;

on the physiology of the nervous system of Antedon rosacea, [585]

Marsigli, [167]

Marsupifer valdiviae, [379]

Marsupites, [588]

Maryna, [137];

M. socialis, tube, [152]

Massee, on Myxomycetes, [93] n.

Mastigamoeba, [109], [112]

Mastigophora (Bütschli's name for Flagellata), [109]