THE TRUE PHALANGERS, 87 
their margins and inner surface naked. Chin and under-parts 
white or yellowish-white, sometimes passing into deep chestnut 
at and near the root of the tail. Tail furry for about one-half 
of its length superiorly, and for two-fifths below ; its terminal 
portion with more fine hairs scattered over its upper and lateral 
surfaces than usual, and with the contrast in colour between 
the upper and under surfaces very strongly marked. 
DistributionCelebes and Sanghir Islands. 
THE TRUE PHALANGERS. GENUS TRICHOSURUS. 
Lrichosurus, Lesson, Dict. Class. d’Hist. Nat., vol. xiil., p. 332 
(1828), 
Size large ; form stout; fur thick and woolly ; ears medium 
or short. Fore toes sub-equal, their respective lengths in the 
order 4, 3, 2, 5, 1; claws large and strong ; soles of hind feet 
thickly haired beneath the heels, elsewhere naked, with low, 
rounded, ill-defined pads. Tail strong, its terminal third or 
half naked inferiorly, and its extreme tip completely bare, 
Side View of Upper and Lower Jaw of a species of Phalanger. 
Chest with a gland. The molar teeth with four cusps which 
tend to form two incomplete transverse ridges ; and the fourth 
premolar large, obliquely placed, and vertically ridged (es- 
pecially in the lower jaw), thus approximating very closely to 
the corresponding tooth of Aypsiprymnodon. 
