PATAGONIAN EXPEDITIONS ! PALAEONTOLOGY. 
EXPLANATION OF PLATE IX. 
Interatherium robustum : Restoration of the skeleton based on two speci- 
mens of this species, Nos. 15,401 and 15,348, supplemented by a third 
specimen referred to I. extensum (No. 15,041). About two thirds the 
natural size. ........... 
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