its burrow.
the rampart.
use of same.
methods of catching prey.
method of laying eggs.
the egg-sac.
experiments with.
the hatching process.
the young.
experiments with.
a problem of energy.

Macrocera.

Mantis, Praying.

Mason-bees.
cells used by Osmiae.

Mason-wasps.

Massagetae, customs of the.

Megachiles.

Melolontho fullo.

Michelet.

Microgaster glomeratus.