RECORDS OF W.A. MUSEUM. 
30] 
A careful search through the specimens in the Museum and 
the figures and descriptions to be found in the works of reference 
available, showed that without a doubt the two mandibles are those 
of a Koala, or Native Bear {Phascolarctus). See Owen's “ Extinct 
Mammals of Australia,” fig. ii, p. 90; fig. 5, p. 152; fig. 6, p. 153; 
fig- 3 i pl- XXXII. Also British Museum Catalogue of Marsupialia 
and Monotremata, pp. 209, 210, 212. 
The following measurements were taken in mm 
Antero-posterior length . . 
. : — 
Aged 
100 
Young 
80 
Height (coronoid) . . . . 
. . 
70 
49 
Thickness behind M 4 
. . 
9-5 
— 
Width, exterior of condyle to exterior of condyle 
67 
— 
Greatest width (coronoids) 
. . 
74 
53-5 
Length of incisors 
II? 
II 
Thickness of do, . . . . 
. . 
3-5 
3-5 
Depth at socket 
. . 
7 
6 
Length of cheek series . . 
35 
38 ? 
Length of premolar 
. . 
6.5 
7 
Greatest thickness of premolar ... 
. . 
4-3 
4-5 
Length of Mi -M 3 
. . 
21-5 
23 
Length of M 1 -M 4 
. . 
28.5 
31 ? 
Length of Mi . . . . . . 
. . 
7 
7'5 
Thickness of Mi 
. . 
5-5 
5-5 
Length of M 2 . . 
. . 
7-25 
7-5 
Thickness of Mz . . . . 
. . 
5-5 
5-5 
Length of M 3 . . 
. . 
7-25 
7-5 
Thickness of M 3 
. . 
5 
5 
Length of M 4 . . 
.. 
7-25 
7-5 
Thickness of M 4 
. k - 
5 
5 
Depth of jaw under P 4 .. 
.. 
18.5 
14 
Depth of jaw under M 4 
22 
19-5 
Distance of condyle above the alveolus of M 4 
32 
21 
Length of symphysis 
.. 
24 
? 
