216 LLOYD’S NATURAL HISTORY. 
Schreber for the next member of the genus, may be charac- 
terised as follows :— 
Size large; fur short, coarse, and harsh. General colour 
pale grizzled grey on the crown of the head and middle of the 
back, and rich orange yellow on the flanks and under-parts ; 
legs yellow; feet greyer. Muzzle long and slender, with the 
naked portion extending backwards as a short prolongation in 
the middle line. Ears rounded and very short, with the ante- 
rior basal projection weli-developed. A gland on the chest in 
the male. Skin of soles of feet rough and ccarse; pads of 
hind feet only five in number, and not so well-defined as in 
the other members of the group. Tail about half the length of 
the head and body, thick, regularly tapering, and clothed with 
numerous short fine hairs; in colour brown above, and 
yellowish beneath. Length of head and body in a large male 
about 6 inches ; of tail 3} inches. 
Distribution.—South Brazil and Uruguay. 
XVI. RED-FLANKED OPOSSUM. DIDELPHYS BREVICAUDATA. 
Didelphys brevicaudata, Erxleben, Syst. Regn. Anim., p. 89 
(1777) ; Thomas, Cat. Marsup. Brit. Mus., p. 356 (1888). 
Didelphys brachyura, Schreber, Saugethiere, vol. iii., p. 548 
(1778). 
Didephys tricolor, Geoffr., Cat. Mus., p. 144 (1803). 
Didelphys hunteri, Waterhouse, Jardine’s Naturalist’s Library, 
Mamm., vol. xi., p. 110 (1841). 
Peramys tricolor, et P. brachyurus, Lesson, Nouv. Tabl. Regne 
Animal, Mamm., p. 186 (1842). 
Didelphys glirina, Wagner, Archiv. fiir Nat., vol. viii, p. 359 
(1842). 
Characters.—May be distinguished from the preceding by 
the large ears and the red colour of the flanks ; the number ol 
teats (unknown in the yellow-flanked species) being either five 
