1 8 Erwin H. Barbour 



Plate XII - 



EuhcJodon morrilli. Pelvis with sacrum. Practically without blemish. 

 Extreme width 56 inches (1,424 mm.) ; pelvic aperture 16 inches (407 

 mm.) ; thyroid foramen 4^ X 7^ inches (115 X 192 mm.). 



Plate XIII 



Straj^ Mastodon Bones from Devil's Gulch. 

 Euhelodon morrilli, a, b, c, d and c. 



a, left femur from above. X ]/%■ 



b, same, back view. X ]4,- Across head and tuberosity 14 inches 

 <35S mm.). 



c, patella. 



d, right tibia and fibula united. Apparently not pathological. X tV. 

 Tibia 22 inches (560 mm.) long. 



e, left humerus, front view. X h- 

 Tetrabelodon willistoni, f, g and h. 



/ and g, front and back views of left humerus. X t*'?- Total length 

 25 inches (635 mm.). 



/;, five tusks showing varying widths of enamel bands. 



Plate XIV 



Hippohippiis matthewi. a, side view showing unusually hypsodont teeth. 

 b, top view. These teeth are reproduced to exact size for the sake of 

 measurement and comparison. 



202 



