114 PATAGONIAN EXPEDITIONS I PALAEONTOLOGY. 



tween the glyptodonts and the armadillos, for the primitive features 

 are, for the most part, points of resemblance to the latter group. A much 



FIG. 3. 



Bones of the left hind-leg and foot of glyptodonts, x J. a. Glyptodon asper (after Burmeister). 

 b. Propalaohoplophorus australis. 



more difficult task is to determine the relationships between these Santa 

 Cruz genera and their successors in time. With the materials now avail- 



