Recently DELAMARE DEBOUTTEVILLE & RENAUD-MORNANT (1965) described two new species of marine tardigrades, Florarctus heimi and F. salvati, for which they erected a new genus. The representatives of this remarkable genus are characterized by the possession of large, aliform expansions of the body, structures which were unknown among the Tardigrada. The two species were taken from coral sand from New Caledonia. Two specimens of an undescribed species, which undoubtedly belongs to the genus Florarctus, have now been found in a sample of coral sand from Curaçao. The sample, preserved in alcohol, was kindly put at the author’s disposal by Dr. P. WAGENAAR HUMMELINCK, who collected it during his investigations of the Piscadera Baai in 1964.