210 
MACROPODID.E. 
anchylosed to the tibia. 1 The vertebra? are — cervical, 7; 
dorsal, 13; lumbar, 0 ; sacral, 2; caudal, 21=52. 
In Mr. Gould’s collection is a skull labelled us belonging 
to the Hypsipr. WAitei , which also agrees in the smaller size 
of the auditory bulla % and the (/renter width of the inter - 
orbital space, (as compared with that of H. penicillatus ), 
but which has the nasal bones considerably broader than in 
the Paris skull above alluded to, or in the H. Hunteri . I am 
still inclined, however, to think the skull in question is cor¬ 
rectly labelled, for in the College of Surgeons Museum is a 
fourth skull, which presents an intermediate condition of the 
nasal bones. I subjoin the dimensions of these skulls. 
Total length of cranium ... 
Width . 
Length of nasal bones 
! Width of ditto, at the base. 
Ditto near the apex, at the root of 
the free portion 
Space between orbits . 
Length of frontal bones ... 
“ of palate, to tbe posterior 
emargination . 
“ of auditory bulltc 
of the three incisors on 
either side of the upper 
jaw, taken together 
Width of the anterior pair of in¬ 
cisors, taken together ... 
H. White!, 
Par. Mus. 
H. Iluntcri 
Coll. Surg. 
H. Whitei, 
Gould's 
CoUect*.* 
1 Skull of 
Younj 
Aimiud hi 
Coll. Son:. 
Ins. Liuea. 
Ins. Lines. 
Ins. Lines. 
Ins. Un«. 
2 
11 
3 
0 
o 
11 
2 
6 
1 
8 
i 
84 
1 
8 
i 
u 
1 
21 
1 
21 
1 
2 
1 
0 
0 
Gj 
0 
Cl 
it 
7i 
0 
61 
0 
3 
0 
3f 
0 
3J 
0 
94 
0 
91 
0 
91 
0 
8 
0 
11 
1 
01 
1 
3 
1 
21 
0 
31 
0 
3} 
0 
4 
0 
4 
0 
4 
0 
21 
0 
21 
1 In the If. murinus, the tibia and fibula are distinct. 
* Sec PI. 10, fig. 4. 
