Cubomedusae and Scyphomedusae
Acknowledgements

We are indebted to Prof. M. Arai (Canada) for information on Atolla spp.; to Drs. F. Lang da Silveira and A. Carrara Morandini (Brazil) for help with Lycnorhiza lucerna, Chrysaora lactea and Nausithoe aurea; and to Drs. A. Marques and A. Carrara Morandini (Brazil) for data on Tripedalia cystophora, Tamoya haplonema and Chiropsalmus quadrimanus. Dr. F. Pagès (Spain) offered useful information on Desmonema sp. and Aurelia sp. from Tierra del Fuego (Argentina). Drs. F. Ramírez (Argentina) and Lisa-ann Gershwin (U.S.A.) kindly commented on the manuscript. Mr. J. Corbera (Spain) kindly gave permission to redraw several of his excellent illustrations from Pagès et al. (1992). Mrs. J. Outumuro and R. González (Argentina) kindly provided photos and video tapes of Chrysaora plocamia from Puerto Madryn (Argentina). Dr. R. Larson (U.S.A.) allowed use of some illustrations from Larson (1986), and the American Geophysical Union, Scientia Marina (Spain), Masson (France), Gustav Fischer (Germany), SPB (Holland), Brazilian Journal of Oceanography, and Cambridge University Press (U.K.) released copyright permission for some of the images reproduced or redrawn here. Dr. R. Elías (Argentina) drew many of our illustrations. H.W.M. deeply appreciates help from crews of the R/V's. "Meteor", "Evrika", "Oca Balda" and "E. Holmberg" during cruises from which much of the information presented in this chapter was obtained. This is contribution Nº 1004 of INIDEP.