After a survey of Ndere Island National Park between October and November 2004, we recorded 18 species of butterflies and 3 species of land snails. Eurema brigitta brigitta was the most abundant butterfly whereas Thapsia karamwegasensis was the most abundant land snail. Majority of the butterfly species are found in open formations and about 50 % of them have a widespread distribution in Africa, while the land snails were forest species known only from Eastern Africa. Ndere island appears to support low levels of biodiversity although further monitoring is necessary.