80 PROFESSOR OWEN ON THE FOSSIL MAMMALS OF AUSTRALIA. 
PLATE V. 
Fig. 1. Side view of mandible of Nototherium Mitchelli (female 1 ?) : — half nat. size. 
Fig. 2. Under view of the same mandible : — half nat. size. 
Fig. 3. Upper view of the same mandible and teeth : — half nat. size. 
Fig. 4. Front view of symphysis and broken incisors of the same mandible : — nat. size. 
Fig. 5. Back view of part of rising ramus of the same mandible : — nat. size. 
PLATE VI. 
Fig. 1. Outer side view of right mandibular ramus and teeth of a young Nototherium 
Mitchelli. 
Fig. 2. Under view of the same ramus. 
Fig. 3. Upper view of the same ramus and teeth. 
Fig. 4. Inner side view of the same ramus and teeth. 
Fig. 5. Outer side view of fore part, with alveoli of the incisor and of the first two 
molars exposed, of the same ramus. 
All the figures are of the natural size. 
PLATE VII. 
Fig. 1. Outer side view of part of mandibular ramus and teeth of Nototherium Victoria : 
— half nat. size. 
Fig. 2. Inner side view of the same ramus and teeth : — half nat. size. 
Fig. 3. Under view of back part of symphysis of the same ramus : — nat. size. 
Fig. 4. Front view of fractured symphysis of the same ramus : — nat. size. 
PLATE VIII. 
Fig. 1. Outer side view of mutilated right mandibular ramus and teeth of Nototherium 
inerme : — half nat. size. 
Fig. 2. Upper view of mutilated mandible and teeth of Nototherium inerme : — half nat. 
size. 
Fig. 3. Inner side view of mutilated left mandibular ramus of Nototherium inerme : — 
half nat. size. 
Fig. 4. Fractured surface of the symphysis : — two thirds nat. size. 
PLATE IX. 
Fig. 1. Side view of first incisor, upper jaw, of Nototherium Mitchelli. 
Fig. 1 a. Base of the same tooth. 
