PLATE IV. 



Fig. 24. Protoreodon paradoxicus. Skull, from left side. (Depressed by crushing.) 



Fig. 25. Protoreodon paradoxic us. Left upper dentition. 



Fig. 26. Protagriochcerus annectens. Right upper dentition, side view. 



Fig. 27. Protagriochcerus annectens. Right upper dentition, crown view. 



Fig. 28. Protagriochcerus annectens. Left tarsus. At., navicular; Cl>. , cuboid. 



Figures 26, 27, 28 are of the same individual, belonging to the American Museum of 

 Natural History. (No. 18 18.) 



(All figures of natural size.) 



