TRANSACTIONS OF WAGNER 



RHINOCEROS 



with so short a calcaneum, while the metatarsals of fossiger, which mark the 

 extreme of shortness in the group, are joined with a comparatively long cal- 

 caneum. The inner facet for the astragalus is deeper than wide, and its long 

 axis forms an angle of 40 to 45 with the outer face of the calcaneum. In 

 fossiger the inner astragaline facet is longer than deep, and its long axis forms 

 an angle of about 90 with a line drawn vertically to the outer face of the cal- 

 caneum. The cuboid facet looks almost directly downward, while in fossiger 

 it looks sharply inward. 



Malacorhinus. Unicornis. Fossiger. 



/~ ~\ /" * 



Extreme length . . .122 mm. .113 mm. .135 mm. .126 mm. .116 mm. 



Width go " .83 " .85 " .74 " .62 " 



Depth of process . .63 " .76 " .75 " .45 " .37 



Width of process . .50 " .50 " .57 " .35 " .35 " 



