PSEUDOCHIRUS. 29 
Dimensions.—Head and body about twenty-three inches ; tail 
about fifteen inches. 
H abitat.—Tasmania ; 
References.—Thomas, B. M. Catal. p. 190; Gould, Mamm. 
Austr. i. pl. xv. 
Genus IV.—PSEUDOCHIRUS, W. Ogilby (1836). 
Size large or medium. Fur short and rather woolly. Ears 
medium or short, hairy behind. Flanks without flying membrane. 
Fore toes subequal, the two inner ones markedly opposable to the 
outer three, their relative lengths as follows—4, 3, 5, 2, 1. 
Claws moderate. Palms and soles naked, with large rounded 
and striated pads. Tail long and tapering ; its tip naked under- 
neath for a varying distance ; markedly prehensile. Mamme 
four. 
Dentition.—I, 55°", OC. 40°, P. 034 M, 1224=15 or 174 
(at most) 3 x 2 = 36 or 40. 
Habits.—Arboreal ; phytophagous. 
1. PsEUDOCHIRUS ARCHERI, Collett, sp. (1884). 
Archer’s Opossum. ‘Tula’ of the Aborigines. 
Size moderate. Fur soft, close, and thick. General color above 
grizzled grayish-green ; below, chin grayish-white, remainder pure 
white. A distinct pale yellow spot both above and below the 
eyes. ars very short, broader than long, rounded, their posterior 
edges and a spot beneath their bases white. A black central 
line on the nape and back ; two indistinctly dark-edged whitish 
lines bordering the central line. Distal third of tail white. 
Naked part beneath tip less than half the length of tail. 
Dimensions.— Head and body about fourteen inches ; tail about 
thirteen inches. 
Habitat.—Herbert River District, Queensland. 
References.—Thomas, B.M. Catal. p. 177 ; Collett, P.Z.S. 1884, 
p. 381, pl. xxix. 
2. PSEUDOCHIRUS COOKI, Desmarest, sp. (1817). 
Tasmanian Ring-tailed Opossum. 
Size moderate. Fur very thick, close, and woolly. General 
color above dark smoky-brown; below white. Ears large, rounded, 
the anterior part of the back brown, the posterior margin 
generally white. Hands and feet dark brown or black. Tail 
dark brown, the distal two to four inches white ; the naked part 
below smooth, from three to five inches long. 
