Un livre à main à la marsupialia et monotremata . en, Phil. TRANS., 1874, p. 247-Macropus magnus^ Thomas, Cat Marsup. Brit. MUS., p. 27(1888). Connu seulement par un crâne unique au British Museum du nord de l'Australie centrale, distingué de celui de l'espèce précédente par la petite taille ou l'absence des lédgessur le devant des dents molaires, ainsi que par la longerforamina sur le palais. Il est possible que ce Kan-garoo puisse finalement s'avérer identique à l'IsabellineKangaroo, dont seule une peau était connue quand le catalogue des Marsupiaux du British Museum a été écrit

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A hand-book to the marsupialia and monotremata . en, Phil. Trans., 1874, p. 247-Macropus magnus^ Thomas, Cat. Marsup. Brit. Mus., p. 27(1888). Known only by a single skull in the British Museum fromNorthern Central Australia, distinguished from that of thepreceding species by the small size or absence of the ledgeson the front of the molar teeth, as well as by the longerforamina on the palate. There is a possibility that this Kan-garoo may eventually prove to be identical with the IsabellineKangaroo, of which only a single skin was known when theBritish Museum Catalogue of Marsupials was written. VIL BLACK-TAILED WALLABY. MACROPUS UALABATUS. Kangurus ualabatiiSy Less, and Garn., Voy. Coquille, Zool., vol. i., p. 161 (1826).Macropus ualabatus^ Lesson, Man., Mamm., p. 227 (1827); Thomas, Cat. Marsup. Brit. Mus., p. 30 (1888).Halmaturns ualabatus, Gray, in Greys Australia, Appendix, vol. ii., p. 402 (1841). (Plate II.) With this species we leave the true Kangaroos and come tothe smaller animals forming the group of the Large Wallabies.. < i Q pa <I O< PQ I KANGAROOS AND WALLABIES. 25 The species of this group, which closely resemble one anotherboth in size and form, exhibit a more brilliant type of colorationthan the sombre-hued Kangaroos; this difference being es-pecially noticeable in the face. As indicated by the relativelylarge size of their hind feet, their leaping powers are consider-ably greater than those of the smaller Wallabies. As a rule, thepalate of the skull is less completely ossified than in the Kan-garoos, and the outermost upper incisor tooth is always fur-nished with a single well-defined external notch, near or at thecentre of the crown. The molar teeth differ from those of theKangaroos in having an external longitudinal bridge connect-ing the anterior ledge with the first transverse ridge; while themedian bridge which usually joins the same ledge to the firsttransverse ridge in the former is small or wanting. Characters.—The following ar

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