Fauna of New Guinea Guinea. However, the tree-kangaroos, which are mostly endemic to New Guinea, are different in appearance and behaviour. As suggested by their name, they are arboreal. They have long, thick tails which enable them to balance in trees, and large, strong forearms for gripping to trees. Two species of tree kangaroos are also found in Australia, they are believed to have migrated from New Guinea during the Pleistocene. The cuscus, family Phalangeridae, are a family of marsupials closely related to the possums of Australia. The cuscus have evolved in New Guinea, and are found throughout the island. Most species are dark
Law of Papua New Guinea development of the customary law according to indigenous Melanesian conceptions of justice and equity has been less thorough than may have been anticipated in 1975; the Underlying Law Act does not yet appear to have had significant effect. Advocacy follows the conventions of the English common law world and is adversarial rather than inquisitorial; German law was wholly displaced by Anglo-Australian law in the former German New Guinea after 1914 when Australia seized the Territory and there are no traces of it in modern Papua New Guinea. The Chief Justice of Papua New Guinea is The Honourable Sir Salamo Injia.