Wikipedia entry for Wallace Line
Weber's Line is a biogeographical boundary in Southeast Asia running between Sulawesi and New Guinea, representing the area of 50:50 balance between Asian and Australian fauna. Proposed by Max Carl Wilhelm Weber, it lies east of the Wallace Line, acting as a transition zone for species composition in the Wallacea region
Alfred Russel Wallace
Alfred Russel Wallace was an English naturalist, explorer, geographer, anthropologist, biologist and illustrator. He independently conceived the theory of evolution through natural selection; his 1858 paper on the subject was published that year alongside extracts from Charles Darwin's writings on the topic