Prasinohaema prehensicauda  Prasinohaema prehensicauda (prehensile green tree skink) is a species of skink. It is found in Papua New Guinea. It is known as sydn in the Kalam language of Papua New Guinea. Green "P. prehensicauda" are called sydn km, while brown ones are called sydn mlep. It is an arboreal skink found in casuarinas and other second-growth trees.