EXISTING SPECIES OF THE GENUS PHASCOLOMYS. 
Table 10. Measurements of Lower Teeth Series of Tasmanian 
Species. 
N umber of Specimen . . 
1 . 
Juv. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 
9. 
Length, teeth series . . 
40 
48.5 
52 
52 
51 
50 
48 
48.5 
42* 
* M‘ not in correct position. 
Some of the main features in the above Tables may be sum- 
marized as follows: — 
1- — 'King, Deal, and Flinders Islands Species. 
Basal length 
121 
_ 
132.5 
Greatest breadth 
99 
_ 
107 
Teeth — upper series 
40 
- 
45 
„ lower series 
41 
_ 
46 
Length of humerus 
90.5 
_ 
98 
„ femur 
120 
_ 
125 
Greatest width of humerus 
2.— Tasmanian Species. 
41 
5- 
42 
Basal length 
135 
- 
151 (163) 
Greatest breadth 
116 
- 
128.5 (138) 
Teeth — upper series 
47 
- 
50 (51) 
„ lower 
. . 
48 
- 
52 
Length of humerus 
no 
- 
115 
„ femur 
3 . 
— P. mitchelli. 
143 
147 
Basal length 
164 
- 
181 
Greatest breadth 
127 
- 
155 
Teeth — upper 
50 
- 
52 
„ lower 
52 
- 
54 
Length of humerus 
... 
116 
- 
128 
„ femur 
4 . 
— P. latifrons. 
150 
171 
Basal length 
144 
- 
162 
Greatest breadth 
116 
- 
134 
Teeth — upper 
„ lower . . 
Length of humerus 
„ femur 
47 
48 
111 
135 
- 
52 
48.5 
The structural peculiarities of P. latifrons, such as the very pro- 
minent post-orbital processes and the hairy muzzle, serve to dis- 
tinguish it at once. In regard to the other three groups, the dif- 
ference is mainly one of size. It will also be noticed that, so far as 
the measurements are concerned, the Tasmanian species and P. 
latifrons are very closely similar to one another. 
The Island species, the Tasmanian and P. mitchelh appear to 
represent three well-marked forms, so far as size is concerned. The 
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