APPENDIX. 289 
elongated horizontally; first lower incisor lancet-shaped. Length 
to root of tail about 17°5 inches ; of tail 9°5 inches. (Co//e??). 
Distribution.— Mary river, North Australia. 
Habits.—This species, which in general colour is very similar 
to P. peregrinus, is peculiar in dwelling among rocks, instead 
of on trees. During the daytime it conceals itself amongst 
huge granite rocks, which it leaves at night to ascend trees in 
search of food. It feeds chiefly on the soft parts of a berry 
with a large stone, somewhat like a. cherry, but larger. It 
never resorts to hollow trunks for sleeping, although, when 
hunted, it will occasionally take refuge in a tree. 
FAMILY EPANORTHID. 
This family was originally made known to science upon the 
evidence of fossilized remains from the middle Tertiary beds 
of Santa Cruz, in Patagonia, where the allied extinct families 
Abderitide and Garzoniide are likewise met with; and it was 
not till the autumn of 1895 that a living representative of the 
group was recognised. The Ffanorthida, as typified by the 
extinct genus Lpanorthus, differ from all other existing Dipro- 
todonts in the absence of syndactylism in the hind foot ; and 
it is probable that the same condition obtained in the other 
two extinct families. The family may be defined as non- 
syndactylous Diprotodonts, wih a hallux present, which is 
not widely opposable, and four upper and three lower pairs of 
incisor teeth, the last lower premolar being of ordinary form 
and dimensions. It is obvious that the inclusion of this 
family in the Diprotodontia will render neces:ary some modifi- 
cation of the definition given on page 11. Possibly, however, 
the present group may really form a sub-order by itself, in 
which event the name Paucituverculata, proposed by Sefior 
Ameghino, is available. 
2 U 
