BY C. W. DE VIS. 131 



Plate XV. 



Sthenurus pales. 



Fig. 1 — First three lower molars. 



Fig. 2 — -Upper premolar. 



Fig. 3 — Lower premolar. 



Fig. 4 — Hinder surface of third lower molar. 



Sthenurus goliah, Ow. 



Fig. 5 — Upper deciduous premolar — imperfect. 

 Fig. 6 — Upper permanent premolar in crypt. 

 Fig. 7 — Lower permanent premolar. 

 Fig. 8— Hinder surface of first upper molar. 

 Fig. 9 — Hinder surface of last upper molar. 



Plate XVI. 



Sthenurus otuel, Ow. 



Fig. 1 — Lower permanent premolar. 



Fig. 2 — Lower third molar. 



Fig. 3 — Upper permanent premolar. 



Fig. 4 — Upper third molar. 



Sthenurus oreas. 



Fig. 5 — Lower permanent premolar. 



Fig. 6 — Lower third molar. 



Fig. 7 — Upper permaneut premolar. 



Fig. 8 — Upper third molar. 



Sthenurus atlas. 



Fig. 9 — Lower deciduous premolar— imperfect. 

 Fig. 10 — Lower permanent premolar. 

 Fig. 11 — Last lower molar— imperfect. 



Habnaturus vinceus. 



Fig. 12 — Upper permanent premolar. 

 Fig. 13 — Lower permanent premolar. 

 Fig. 14 — Upper third molar. 

 Fig. 15 — Lower third molar. 



Plate XVII. 



Habnaturus thor. 



Fig. 1 — Lower permanent premolar. 

 Fig. 2 — Lower third molar. 



