PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
EXPLANATION OF PLATE XX. 
Fig. i. 
Adinotherium ovinum 
: Skull (No. 15,382) and mandible (No. 15,- 
PAGE 
I 3 I )> Xi 
202 
Fig. 2. 
U (( 
Skull, from below, X i (No. 15,382). 
203 
Fi g- 3 - 
i ( << 
The same, from above, X i- 
Fig. 4. 
<< (( 
Forehead, showing rugosities, X x (No. 
15-382) . , 
203 
Fig. 5 - 
Nesodon imbricatus : 
Right third upper molar, from inner side, 
showing the open pulp-cavity, X 2 1 masti- 
cating surface upward (No. 15,526). 
122 
(VOL. VI.) 
