PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
Fig. I. 
Fig. 2. 
Fig- 3 - 
Fig. 4. 
Fig. 5 - 
Fig. 6. 
Fig. 7. 
Fig. 8. 
EXPLANATION OF PLATE XIX. 
PAGE 
Nesodon imbricatus : Left lower milk-dentition, inner side, X t 
(No. 15,400) 127 
“ “ The same, crown view, X t- 
“ “ Right lower milk-dentition, outer side, X t 
(No. 15,354) 
“ “ Fourth lower premolar, inner side, X t (No. 
I 5 .II 5 )- • 125 
“ “ The same, crown view, Xi- 
“ “ Young mandible, from above. Milk-incisors 
erupting, roots of prelacteal teeth retained. 
Di T = First milk-incisor. Pli T = Root of 
first prelacteal incisor. Amegh. coll. . 129 
“ “ Right ramus mandibuli, showing the fourth 
premolar (7^4) displacing its predecessor 
{Dp-z), X l (No. 15,115). . . . 129 
“ “ Upper milk-dentition of right side, external 
view, X 1 (No. 15,354) 126 
(vol. VI.) 
