EXPLANATION OF THE PLATES. 
551 
Fig. 2. Skull of Phalangista Cook'd, viewed from 
above. 
Fig. 3. Skull of Petaurus taguanoides . 
Fig. 4. Skull of Petaurus pygm<BUS, magnified; A a, 
side view of the upper and lower teeth much 
. enlarged. 
Fig. 5. Skull of Ph ilangistaNeillii, magnified: 5 a, 
side view of the teeth of the upper and 
ower jaws much magnified. 
Fig. 6. Upper view of the skull of Tarsipes rostvatus, 
magnified : C a, side view of the same : 6 b, 
side view of the lower jaw. 
Plate 20, Fig. 1 . Skidl of Perameles lagotis . 
2. Ditto of Perameles obesula, a large male: 2 a y 
side view of the teeth of the upper jaw : 2 b , 
side view of the lower jaw, from the skull of 
a female ? 
3. Ditto of Perameles myosuros ; 3 a, side view of 
the teeth of the upper jaw. 
4. Ditto of Cheer opus castanotis; 4 a, side view of 
the same. From a drawing belonging to 
Prof. Owen. 
5. Ditto of Phascolarctus cine reus, half' the natural 
size; 5 a, side view of the same. 
Plate 21. Skulls of the various genera of the family Dasyuridee . 
Fig. 1. Myrmecobius fa&cialus; 1 «, side view of the 
teeth of the upper jaw, magnified; 1 b, the 
lower jaw viewed from the inner side. 
Fig. 2. Dasyurus macula tus, half the natural size. 
Fig. 3- Thylacinus cynocephalus , half the natural size. 
Fio\ 4. Dasyurus nr sinus, half the natural size. 
Fig. 5. Phascogale penicillata, and side view of the same. 
Plate 22. Fig. 1 Skull of Didelphys cancrivora . 
Fig. 2. Fore part of the skull of a Dasyurus, to show 
the differences of form and proportions of the 
nasal bones in this genus, as compared with 
those of the Didelphys, where they are pro¬ 
duced in front, and much expanded behind. 
