Two diamond-points, the mandibles, form the terminal armature of the drill.

Like the Larinidae, but under conditions of greater difficulty, the Curculionidae must use the implement in order to prepare the way for the installation of their eggs.
But however well founded our suspicion may be, it is not a certitude.

I can only discover the secret by watching the insect at work.
Chance, the servant of those that patiently solicit it, grants me a sight of the acorn-beetle at work, in the earlier half of October.

My surprise is great, for at this late season all industrial activity is as a rule at an end.

The first touch of cold and the entomological season is over.
To-day, moreover, it is wild weather; the _bise_ is moaning, glacial, cracking one's lips.