Machaerorhamphus alcinus, [172];

M. anderssoni, [172];

M. revoili, [172]

Machaerorhynchus, [506]

Machetes, [270];

polygamous, [271];

M. pugnax, [285]

Machetornis, [474], [475], [477]

Macrochires, of Nitzsch, [420]

Macrocorax, [552], [556]