Under this heading the regular routine exploration work, specially by the forestry services in Malaya, Sarawak, Brunei, North Borneo, Indonesia, and Lae, by the Botanic Gardens, Bogor and Singapore, and by the National Museum, Manila, will not be mentioned; it is most encouraging that the gradual accumulation of materials through these services is steadily increasing and gaining in importance. Since 1954 the Forest Department in Dutch New Guinea, at Hollandia, has also started a regular collection and a Herbarium, duplicates of which will be distributed through the care of the Rijksherbarium, Leyden. The aim of this chapter is to record in a concise way special collecting and exploration trips and expeditions; formerly these were included under miscellaneous information.