Note
Certain halichondrid genera exhibit unusual patterns of distribution of secondary metabolites with antifungal, antitumor, or antiviral activity (Kashman et al. 1987; Wright et al. 1987), which we hypothesize could be useful as taxonomic characters in our revision of the Halichondrida. The purpose of this study is to examine patterns of distribution of secondary metabolites in representative samples of halichondrid genera from the Central Atlantic and to evaluate their usefulness as taxonomic characters.