A Sipunculan, Reported to be “Interstitial” from the Netherlands Antilles

The sipunculan Aspidosiphon exiguus Edmonds, 1974, is recorded from Bonaire and Curaçao (Netherlands Antilles). It was first described from three localities in Cuba. Unlike most aspidosiphonids, the species seems to belong to the interstitial fauna of marine beaches and appears to be tolerant of considerable changes in salinity of its environment. A redescription of A. exiguus , based on the specimens from the Netherlands Antilles, is given.