G AIMARDS RAT-KANGAROO. 
211 
% 
11. Wnuti ijlLHuntm 
Car. Mu*.,Coll.Surg. 
1. White!, 
Gould’s 
Collection. 
Skull of 
Voting 
Animal in 
Coll. Surg. 
In*. 
Lines. 
Ills 
Lines. 
Inn. lines* 
In*. Line*. 
Between incisors and canine 
0 
0} 
(1 
0 
01 
44 canine and premolar 
0 
3* 
0 
4 
0 
’31 
Length of the premolar ... ... 
0 
H 
0 
31 
t 
9 
Space occupied by the premolar 
and four molar teeth. 
0 
11 
0 
11 
0 
Length from front of anterior 
incisor, to front of preraolar . . 
0 
0 
9i 
0 
9k 
Height of lower jaw, measuring 
from the apex of the coronoid 
process downwards . 
0 
9 
0 
91 
1 
1 have to remark, that the dimensions given in the last 
column are those of the skull of a young animal having but 
two molar teeth, in addition to the premolar, on each side of 
either jaw, and. of these teeth the Undermost molar only, is a 
permanent tooth. This is the young animal alluded to in 
“ Morsupialia," p. 183, as presenting the external characters 
of Mr. Ogilbys H.formosus. The original of Mr. Ogilbys 
description is in the Museum of the Linnean Society, and 
may be described as of a greyish yellow hue. somewhat 
sutfused with pale rust colour; under parts dirty white ; tail 
brown above, very pale brown beneath ; towards the apex, on 
the upper surface, the hairs are somewhat longer, and assume 
a deep brown hue; about one inch of the apical portiou, liow- 
♦ In this case the preraolar is a milk tooth. 
t The smaller dimension gives the length of the milk tooth, and the larger 
that of the permanent one. 
♦ Three of these molars only are permanent teeth. 
