Some months ago I was happy enough to procure for our library the rare Animal Kingdom written by Kerr. This autuhor described clearly two Phalangers under the names New-Holland descriptions have Opossum and Vulpine Opossum: these been overlooked by all the naturalist Who have studied the Phalanger-group. As the specimens of these two species are greatly varying in color, and these varieties have been described as species, will try to give a synonymy as complete as possible and to describe in short terms the individuals in our collection in order to give the reader an impression of the variation in color of the species in question.