EXPLANATION OP PLATE 5. 

 Shastasaurus perrini n. sp. 



All figures are from the type specimen. 



Fig. 1. — Skeleton in relief on the original slab. About one-tenth natural 

 size. 



Fig. 2. — Right ilium, posterior side. Three -fourths natural size. 

 Fig. 3. — Right ilium, lateral view. Three-fourths natural size. 

 Fig. 4. — Right ischium. Three-fourths natural size. 

 Fig. 5. — Right pubis. Three-fourths natural size. 



