o bay's rat-kangaroo. 
20.0 
Length from nose to root of tail 
Inches. 
... 18 
Lines. 
0 
“ of tail .♦ . 
... 
... 12 
0 
•* of tarsi ... 
... 
... 4 
8* 
“ of ear . 
... 
... 1 
0 
The following dimensions ore from skulls of //. Graii, for 
the loan of most of which l am indebted to Mr. Gould:— 
• 
Old 
Male. 
Male 
Adult. 
Female, 
Old. 
Speci¬ 
men in 
Zool. 
Soc. 
Mui. 
Adult. 
Leiueu- 
ii. 
Quoy 
and 
Gaiiti. 
In. 
Li. 
In. 
Li. 
n. 
Li. 
In. Li. 
In. 
Li. 
Length of skull . 
3 
2 
111*. 
> 
105 
2 10 
2 
Ill 
Width of ditto . 
ip* 
1 
9 
94 
1 8} 
1 
9 
Length of nasal bones 
1 
21 
1 
H 
21 
1 0 
1 
3 
Width of ditto at the base . 
0 
6 
0 
6 
3 
6 
0 61 
0 
61 
44 44 near the apex 
0 
21 
0 
34 
3 
3 
0 3 
Length of frontal bones . 
1 
ii 
1 
H 
1 
o 
1 
0 
Width of ditto between orbits 
0 
74 
0 
74 
0 
7*1 
0 
8i 
Length of palate . 
1 
0 
l 
0 
1 
04 
1 
1 
44 of three incisors on either 
side of upper jaw 
0 
4 
0 
34 
0 
4 
0 34 
Space between incisors and canine ... 
0 
°iV 
0 
06 
0 
04 
0 1 
0 
1 
44 between canine and premolar 
0 
2 
0 
2j 
0 
21 
0 11 
0 
21 
Length of premolar . 
0 
34 
0 
4 
0 
*i 
0 4 
0 
44 
Space occupied by premolar and 
molars on either side of 
uppei jaw. 
0 
11 
0 
11 
0 
11 
0 11 
0 
111 
Length of auditory bulla;. 
0 
74 
0 
71 
0 
71 
0 74 
0 
74 
Width of ditto . ... 
0 
61 
0 
51 
0 
Gi 
0 G 
0 
34 
Height of ascending ramus of lower 
jaw, in a vertical line dropped from 
apex of coronoid process 
1 
2 
1 
<>1 
1 
u 
Length from back part of condyle 
to anterior margin of coronoid 
process ... 
H 
0 
8 
0 
8 
1 The dimension of the tarsus, as given in the volume on Marsupial Animals, 
in the Naturalist's Library, is incorrect. 
