This paper deals mainly with a collection of ophiuroids from the Lesser Antilles sent to the British Museum (Natural History) by Dr. P. WAGENAAR HUMMELINCK in 1959. The identifications were made by ROSEMARY PARSLOW, but the discussion and figures of Amphiodia and Ophiocomella are by AILSA CLARK. The material was collected in 1948/49 and 1955. Specimens gathered by HUMMELINCK in 1930 and 1936 are mentioned in ENGEL’S report on “Echinoderms from Aruba, Curaçao, Bonaire and northern Venezuela” (1939).