M. androcli, [14]

M. grossiventris, [14]

Malpighi, [59]

Malpighian tubes, [59]

Manchuria, plague in, [95]

Mandibles, [42], [48]

Marmots, [95]

Marsupials, [14]

Maxillæ, [40], [48]

Maxillary palpi, [40]