PLATE XXV. 



Fig. 1. Right scapula, internal surface. 

 Fig. 2. Left humerus, external surface. 

 Fig. 3. Radius. 

 Fig. 4. Ulna. 

 Fig. 5. Hyoid bones. 

 Fig. 6. Left peri otic bone, internal aspect. 

 Fig. 7. Left periotic bone, external aspect. 

 Figs. 8-11. Two other periotic bones of the same speci 

 less water- worn. 



Fig. 12. Right tympanic bone. Inferior aspect. 

 Fig. 13. Right tympanic bone. Exterior aspect. 

 Figs. 14-17. Other fragmentary tympanic bones of the same species, from Chesapeake Beach 



Water-worn, 



More or 



Figs. 1-4, about seven-tenths natural size; fig. 5, about two-t hirds natural size; figs. 6-17, natural 



size. 



