AM. JOUR. SCI., Vol. XVI, 1878. Plate X. 
Figure 1.—Pelvis of — regalis Marsh (Cretaceous); seen from the 
: left, on deen vagaeg 1 size. 
Figure 2. of Laosaurus altus Marsh; seen from the left, one-sixth — 
natural s ; 
' Figure 3 Pelvis as Morosaurus grandis Marsh; seen from the left, one-six- 
natural siz 
The edge of ‘the letters is the same in all the figures, viz: a. acetab- 
ulum; i. ilium; is. ischium; Zs pubis; p’. post-pubis. 
