In this paper I am redescribing and giving some interesting, new, biological information with regard to two species of Apanteles, of which one, A. compressiventris, has not previously been recorded in the Old World, and the other, A. plutellae, not previously recorded from the Western Palaearctic Region; and I believe that it is better to communicate this information at this time rather than to wait until the completion of the monograph upon which it is known that I am engaged, a matter yet of some years.