EXPLANATION OF PLATE VIII. 



Figs. 1-2. Toxochclys laliremis, one-half natural size. 

 Fig. 1. Mandible from above ; 1 a, from outer side. 



2. Coracoid bone. 

 Figs. 3-5. Cynocercus incisu3, natural size. 

 Fig. 3. A caudal vertebra, lateral view : a, inferior ; 6, anterior ; and, c, posterior views. 



4. Caudal vertebra, lateral view : a, view from below ; 1>, from front; c, from behind. 

 Figs. G-7. I'lastomenus coaksccns, one-half natural size: 6, portion of carapace from above; 6 a, same 



from below. 

 Fig. 7. Portion of plastron with lateral free border, from below. 



8. I'lastomenus costalus, costal bone, external surface ; a, same from below. 



9. Caudal vertebra of a Uadrosaurus from Milk Eiver, British America, one half natural size; a, 



front view. 



