The present material has been collected at three occasions: during a stay on Curaçao and Bonaire (Netherlands Antilles) in 1958/59, and again in 1973/74, and during a visit in 1963 to La Parguera, Puerto Rico. The copepods recorded here as associates of Actiniaria and Corallimorpharia (Asclerocorallia) all belong to the Cyclopoida. Two sections of these are represented: the Poecilostomata and the Siphonostomata. Members of other copepod groups were not found in the Antillean region on the hosts in question.