PROFESSOR OWEN ON THE FOSSIL MAMMALS OF AUSTRALIA. 
81 
Fig. 1 b. Side view of crown of the same tooth. 
Fig. 2. Front view of the same tooth. 
Fig. 3. Outer side view of the right upper molars of Nototherium Mitchelli (male?). 
Fig. 4. Grinding-surface of the same teeth. 
Fig. 5. Grinding-surface of the right upper molars of Nototherium inerme. 
Fig. 6. Outer side view of a portion of the right maxilla, with three molars ( d 4, m i, m 2 ) 
in situ , of Nototherium Mitchelli (old male V). 
Fig. 7. Grinding-surface of the same molars. 
Fig. 8. Front view of an upper molar (m >), with the two anterior roots exposed. 
All the figures are of the natural size. 
PLATE X. 
Fig. 1. Outer side view of right lower molars of Nototherium Mitchelli (male); the 
worn crowns of d 3 and d 4 are restored in outline. 
Fig. 2. Grinding-surface of the last three teeth of the same jaw, with outlines of that 
of d 3 and d 4. 
Fig. 3. Grinding-surface and parts of right lower molars of Nototherium Mitchelli 
(female ?). 
Fig. 4. Outer side view of the last three lower molars ( m 1 , m 2 , m 3), with the mutilated 
hinder half of the second (d 4), of Nototherium Victoria. 
Fig. 5. Grinding-surface of the same teeth (of d 4 only the hinder half is preserved). 
Fig. 6. Inner side view of the same teeth. 
Fig. 7. Back view of the penultimate lower molar, with the hind fang exposed in situ , 
of Nototherium Mitchelli. 
Fig. 8. Roots and remnant of crown of a much-worn lower molar of Nototherium 
Mitchelli. 
All the figures are of the natural size. 
PLATE XI. 
Fig. 1. Portion of mandible with three last grinders ( m 1 , 2 , 3 ) of Nototherium Mitchelli ; 
inside view : nat. size. 
Fig. 2. Outside view of the grinders of the same jaw. 
Fig. 3. Upper view or working-surface of the same grinders. 
[Since the foregoing pages were in type, the Trustees of the British Museum have 
received, as a Donation from His Royal Highness the Duke of Edinburgh, K.G., the 
specimen which forms the subject of the above Plate, which the Council of the Royal 
Society have ordered to be added to the illustrations of the present paper. The fossil, 
obtained by His Royal Highness in the Province of Queensland, Australia, is part of 
MDCCCLXXII. M 
I 
