422 



Annals of the South African Museum. 



median groove which dies out about 50 mm. below the posterior 

 upper border of the bone. The anterior border is thin. 



Pulls. The left pubis is a long bone with an expanded proximal 

 portion and a thickened distal end. The middle portion is slender, 

 with a rounded and thickened anterior border having no longitudinal 



Fig. 39. Gryponyx taylori, Htn. 

 Left side of pelvis. X \. 



groove, and thinning posteriorly. The posterior border is missing, 

 but the bone seems to be narrower than in Seeley figure of Masso- 

 spondylus. The pubic foramen is large and oval in shape. 



The chief measurements of the pelvis are as follows: 



Width of acetabular opening . . . 101 mm. 

 Length of preacetabular process . . 140 ,, 



