All species treated in this paper were collected by me between January and June 1962, during my stay at the “Caraïbisch Marien-Biologisch Instituut” (Caribbean Marine Biological Institute), Curaçao. I am deeply indebted to the Government of the Netherlands, which awarded me a grant enabling me to work in Curaçao; to Dr. INGVAR KRISTENSEN, Director of the Institute mentioned, for the kind hospitality shown to me; and to my friend Miss HERTHA CAPRILES, who spared no effort to make my stay on “dushi Corsou” as pleasant as possible.