206 LLOYD'S NATURAL HISTORY. 
ring ; elsewhere naked, with almost imperceptible scales ; in 
colour, the base grey and the tip white, the two colours forming 
a series of mottlings at their junction. Length of head and body 
of male about 10 inches; of tail 1244 inches. Females larger. 
Distribution—North-eastern South America, ¢g., Guiana and 
Brazil. 
VI. WOOLLY OPOSSUM. DIDELPHYS LANIGERA. 
Didelphys lanigera, Desmarest, Mamm., vol. i., p. 258 (1820) ; 
Thomas, Cat. Marsup. Brit. Mus., p. 339 (1888). 
Didelphys derbiana, Waterhouse, Jardine’s Nat. Library, Mamm., 
vol. xl., p. 97 (1841). 
Didelphys ochropus, Wagner, Archiv. fur Nat., vol. viil., p. 359 
(1842). 
Didelphys ornata, Tschudi, Fauna Persana, Mamm., p. 146 
(1844). 
(Plate XXXIV.) 
Characters.—Size rather larger than in the preceding species ; 
fur thick, soft, and even more woolly than in the latter. 
General colour varying from rich dark rufous to pale bright 
fawn, more or less variegated with white ; face greyish-white, 
with the dark stripe generally conspicuous, but ill-defined in 
some of the paler examples ; a reddish area round the eyes ; 
under-parts greyish-white, more or less tinged with rufous ; 
middle of front portion of back with a conspicuous greyish or 
greyish-white stripe, sometimes extending backwards to the 
tail, and in other cases absent ; sides of neck and back bright 
red ; limbs grey or pale rufous. ‘Tail very long, furry at the 
basal end for from one-half to one-third of its length on the upper 
surface, while inferiorly the hair stops an inch or more short of 
the point which it reaches superiorly, the termination of the 
furry portion thus forming an oblique line on the sides ; naked | 
portion grey basally and yellow terminally, with a mottling of 
