His first paper was introduced by Lamarck in 1792.

In the minutes of the session of 4 thermidor, l'an VI.

(July, 1798), we find this entry: "The citizen Lamarck announces that the citizen Latreille offered to the administration to work under the direction of that professor in arranging the very numerous collection of insects of the Museum, so as to place them under the eye of the public." And here he remained until his appointment.

Several years (1825) before Lamarck's death he had asked to have Latreille fill his place in giving instruction.
Audouin (1797-1841), also an eminent entomologist and morphologist, was appointed _aide-naturaliste-adjoint_ in charge of Mollusca, Crustacea, Worms, and Zooephytes.

He was afterwards associated with H.Milne Edwards in works on annelid worms.