ECan : [This page will be cancelled at the close of the work. ] DENDROLAGUS URSINUS, Mier, AND DENDROLAGUS INUSTUS, Muter. A ricure of each of these two very remarkable and highly interesting species of Tree Kangaroos has been given in the fine work now publishing by my friend M. Temminck, entitled “Verhandelingen over de Natuurlijke geschie- denis der Nederlandsche overzeesche bezittingen,” &c.; but as the text appertaining to those plates has not yet appeared, I am unable to give any further account of them than has been conveyed to me in a letter received from M. Temminck, who says :— “The two species were discovered by our traveller M. S. Miiller during his researches in New Guinea, and who has pro- posed for them the names here given: they were found at Triton Bay, and also inhabit the interior of the country; they are arboreal in their habits, climbing trees with the utmost facility.” M. Temminck adds, that M. Miiler will shortly publish a highly interesting account of the habits and economy of these extraordinary animals, which will be given in the third part of this Monograph.