56 



MEMOIRS OP THE UNIVERSITY OF CALIFORNIA. 



71 



Fig. 70. Cymbospondylus petrinus Leidy. Pelvis, X %, Pu, pubis; Is, ischium; //, ilium; O.f., 

 obturator foramen. 



Fig. 71. Mixosaurus cornaHanus (Bassani). Pelvis, natural size. (After Repossi.) II, ilium; Pu?, 

 pubisf; Is?, ischium?. 



Fig. 72. Delphinosaurus perrini Merriam. Pelvis, X % Pit, pubis; /*, ischium; II, ilium. 

 Fig. 73. Shastasaurus osmonti Merriam. Pelvis, X %. Pu, pubis; 7s, isrhium; //, ilium. 



