First record of the hyperbenthic calanoid copepod Metacalanus acutioperculum in the Mediterranean Sea. - Campolmi, M., G. Costanzo, N. Crescenti & G. Zagami (In: Schram, F.R. & J.C. von Vaupel Klein (eds.). Proceedings and Abstracts of the 4th International Crustacean Congress, Amsterdam, 20-24 July 1998, 1999)