20S 



OAKINATJi. 



A. 28. Cast of a caudal vertebra. 



A. 29. Cast of a slab of rock, showing the left lateral, ventral, and 

 dorsal aspects of the pelvis and sacrum. Original figured 

 by Marsh, op. cit. pis. x., xi. (sec fig. 50). 



Fi-. 50. 



Hcsperoniis regalis. — Left side of p-ilvis ; from tho Cretaceous of Kansas. \. 

 il, iliiiiii ; is, iscbiuin ; [i^, pubis ; p, pectineal process of do ; a, acetabulum. 

 {After Marsh.) 



Fig. 51. 



Hespcrornis rcr/alis. — Left side of the pectoral girdle and sternum ; from the 

 Cretaceous of Kansas, i. s, scapula ; h, humerus ; c, coracoid ; /, furcula ; 

 sf, sternum. {After Marsh.) 



A. 30. Cast of the left femur. Original figured by Marsh, oj). cit. 

 pi. xiii. ; see fig. 49, E. Allowing for the crushed con- 

 dition of the proximal extremity, the resemblance to the 

 corresponding bono of Coh/nihus is very marked. 



