Complex sentence: During the 1930s he participated in several collecting expeditions to the Caribbean, especially the Bahamas, as well as in Delacour's seventh expedition to Indochina in 1938-1939.
Split into simpler sentences: During the 1930s he participated in several collecting expeditions to the Caribbean, especially the Bahamas. Greenway also took part in Delacour's seventh expedition to Indochina in 1938-1939.