Equiurídeos da Ilha Grande (Estado do Rio de Janeiro, Brasil)

Abstract

The present paper presents observations on the ecology and systematics of the Echiurida from Una Grande, Rio de Janeiro State, Brazil. Some hydrographic data like salinity, temperature, oxygen conten t and mean size of the sediment granulometry (Ø) are correlated with the occurrence of the Echiurida. A new species, Thalassema liliae is described. Lissomyema exilii (F. Müller) is recorded for the first time in this area.