252 Barbour — Liyammtum Teres in Nebraska Proboscidea. 



Fig. 1. 



Fig. 1. Acetabulum of Tetrabelodon ivillistoni showing a narrow cotyloid 

 notch, and the fossa broadening and deepening toward the center. x 1/10. 



Fig. 2. 



Fig. 2. a, acetabulum of Tetrabelodon lulli showing a narrow fossa of 

 medium depth, with a deep central pit. Note the tuberosity below x for the 

 attachment of the pectineus muscle. Compare with fig. 6. b, section of 

 acetabulum along the line xz. c, femur heads showing pits and scars. 



Fig. 3. 



Fig. 3. a, acetabulum of Eubelodon morrilli showing a broad, deep, 

 pitted fossa. Pectineus protuberance below x. b, section of acetabulum 

 through the line xz. c, head of the femur showing scar, x 1/10. 



