OOLITIC DINOSAURS. 



585 



Fig. 4. 



Fio. 5. 



Right. Right. 



Humerus, Celiosaurus longiis, x'jth nat. size. (Phps., diagr. c, p. 272.) 



expansion of the ba.se or free extremity is chiefly due to the hinder border, and this 

 describes a concavity, while the fore border is nearly straight. The outer surface (left) 

 is slightly depressed lengthwise behind a longitudinal ridge near to and parallel with 

 the anterior border. The inner surface (right) has a longitudinal rise near the middle. 



