3°] 
RECORDS OF W.A. MUSEUM. 
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 ( Phascolarctas ). See Owen’s “ Extinct 
Mammals of Australia,” fig. n, p. 90; fig. 5, p . 152; fig. 6, p. 153; 
fig. 3, pi. xxxii. Also British Museum Catalogue of Marsupialia 
and Monotremata, pp. 209, 210, 212. 
Ihe following measurements were taken in mm.: 
Antero-posterior length . . 
Height (coronoid) 
Thickness behind M4 
Width, exterior of condyle to exterior of condyle 
Greatest width (coronoids) 
Length of incisors 
Thickness of do. 
Depth at socket 
Length of cheek series . . 
Length of premolar 
Greatest thickness of premolar 
Length of M1-M3 
Length of M1-M4 
Length of Mi . . 
Thickness of Mi 
Length of M2 
Thickness of M2 
Length of M3 
Thickness of M3 
Length of M4 
Thickness of M4 
Depth of jaw under P4.. 
Depth of jaw under M4 
Distance of condyle above the alveolus of M4 
Length of symphysis 
Aged 
Young 
100 
80 
70 
49 
95 
— 
67 
— 
74 
53 5 
11? 
11 
3-5 
3-5 
7 
6 
35 
38? 
6-3 
7 
4-5 
4-5 
21-5 
23 
28.5 
3i? 
7 
7-5 
5-5 
5-5 
7-25 
7-5 
5-5 
5-5 
7-25 
7-5 
5 
5 
7-25 
7-5 
5 
5 
18.5 
14 
22 
*9 5 
32 
21 
24 
p 
