PLATE LXXXI. 



Pelves of Predentate Dinosaurs. 



Page. 

 Fig. 1. Pelvis of Camptosaurus dispar Marsh ; seen from the left; one-twelfth 



natural size 228 



Fig. 2. Pelvis of Sterrholophus flabellatua Marsh; seen from the left; one- 

 twelfth natural size 214 



Fig. 3. The same of Stegosaurus stenops Marsh ; seen from the left ; one-tenth 



natural size 214 



a, acetabulum; il, ilium; is, ischium; p, pubis; p', postpubis. 

 406 



