112 
MACROPOD IDyE. 
M. Bennettii , the corresponding teeth, taken together in the 
same manner, measure 1 inch 3^ lines : other differences will 
he perceived upon comparing the following dimensions with 
those of die skull of M. Bennettii. 
Inches. Lines. 
Total length of skull ... ... ... ... ... 5 G 
“ width ... ... ... ... 3 0 
Length of nasal bones, rather more than 1 . 2 3 
Width of ditto at the base ... .. . 0 10 
“ at the apex, immediately behind the contracted 
free points ... ... ... . 0 6 i 
Length of palate . 3 4 { 
Width of ditto opposite the third molar tooth ... 1 0} 
Length of the anterior four molar teeth taken together 1 5 $ 
44 of the three incisors together ... 0 9 
Distance between incisors and molars . 1 3 ^ 
Length of hindermost incisor ... ... . 0 4 J 
Tho hindermost incisor tooth of the upper jaw, which is 
considerably broader than the corresponding tooth in M. 
Bennettii , has a distinct external vertical fold situated rather 
in front of the middle of the tooth (see Plate 5, fig. 13). 
The foremost molar is broad, viewed externally, and presents 
two vertical narrow ridges on its outer side. 
The lower jaw indicates more strength of the masticating 
muscles than in Bennettii , and this is likewise made evident 
by there being a distinct sagittal crest to the cranium, whilst in 
the older skull ol Bennettii , tho ridges formed by the temporal 
muscles are separated and less developed. The height of the 
jaw, measuring from the tip of the coronoid process, is 2 inches 
lines; in Bennettii 2 inches 0-i- lines. The incisor teeth 
are broader and rather shorter than in the last mentioned 
animal. 1 rom specimens in the British Museum collection. 
Mr. Gould describes a small Kangaroo from Port Essington, 
1 Their apices are broken off. 
