Melicertidae, [201], [203], [205], [211], [213], [221]

Melinna, [330]

Membranipora, [481], [492], [518], [519], [523], [528], [530];

phosphorescence, [478];

function of aperture, [500];

larva, [509], [510];

variation, [516]

Membraniporella, [518], [524], [528]

Menipea, [518], [526], [527]

Mermis, [131], [150], [160], [163]