PLATE III. 



Pleistocene Hippopotamus. 



Hippopotamus amphibius. 



Mandible. 



(One-fourth natural size.) 



Fig. 



1. Palatal view of mandible (Barrington, 1884). 



2. Right side view of mandible (Barrington, 1888). 



Both from the river gravel of Barrington, near Cambridge, and preserved in 

 the Sedgwick Museum. 



a. Mandibular condyle. 



b. Process from angle of mandible. 



