Thanks to help of the Government of the Netherlands, Dr. DIVA DINIZ CORRÊA, a lecturer in our Department, was able to work at the “Caraïbisch Marien-Biologisch Instituut” (Caribbean Marine Biological Institute; Carmabi) Curaçao, from January to July 1962. Besides actinians and nemerteans for her own studies she collected opisthobranchs for us, sketched them alive, and took notes of their shape and colours. Furthermore, Dr. PIETER WAGENAAR HUMMELINCK, of Utrecht, has sent us his collections, with exception of the Aplysiidae, caught in 1930, which were already studied by ENGEL (1936).