222 
MACROPODIDiE. 
Inches. Lines. 
Length from nose to root of tail. 
15 
6 
of tail ... ... ... . 
13 
0 
• 4 from tip of nose to ear 
2 
S 
44 of ear ... ... ... . 
1 
1 
“ of tarsus and claws 
4 
10 
44 of skuU ... ... . 
2 
8 
Width of ditto ... ... . 
1 
8 
Length of nasal bones ... ... . 
1 
4 
Width of ditto, at the base . 
101 
44 of ditto, near the apex . 
44 
Length of frontal bones ... ... . 
9 
Width of ditto between the orbits . 
8| 
Length of three incisors of tipper jaw, taken together 
31 
Space between incisor and canine . 
U 
44 between canine and premolar . 
3 
Length of premolar . 
44 of series of molars on one side of upper jaw, 
3 
including the premolar ... . 
10* 
44 of auditory bullce. 
The skull of Bettongia cam pest r is differs considerably 
from the crania of other species of the genus ; it is short, and 
most remarkable for the great width of the nasal bones; these, 
and the irontals, present nearly a Hat surface, but the latter 
are slightly concave between the orbits: the auditory bulla) 
are rather small. The two foremost incisors are broad; 
the second incisor on either side is unusually small, the third 
moderate: the canine is a minute tooth, scarcely more than 
a quarter of a line in width. The premolar is shortish from 
front to hack, and the outer surface is concave in the same 
direction, and exhibits but a faint indication of three or four 
vertical grooves ; the little lobe on the inner side and back 
part of this tooth is rather more developed than usual: the 
molar teeth arc rather large in proportion to the skull; the 
last molar is larger than in either B. Graii or B.penicillata. 
The palate is very deeply emarginated behind, and conse¬ 
quently very short, terminating in a line with the hinder 
part of the premolar tooth. The skull of which the dimen- 
