96 NON-MARINE FOSSIL MOLLUSCA. 



PLATE 8. BEAR RIVER LARAMIE. 



Viviparus COUBSil White. (Page 61.) 



Fig. 1. Lateral view of a very large example, natural size. 



Rhytophorus priscus Meek. (Page 38.) 



Fig. 2. Lateral view, natural size. 



Fig. 3. Opposite view of the same. After Meek. 



Rhytophorus mbekii W. (Page 38.) 



Fig. 4. Lateral view, natural size. 



Fig. 5. Opposite view of a larger example. 



Campfxoma macrospira M. (Page 63.) 



Fig. 6. Lateral view, natural size. 

 Fig. 7. Opposite view of the same. 



Corbicula (Vfxorittna) durkeki M. (Page 31.) 



Fig. 8. Left valve. 



Fig. 9. Similar view of another example. 

 Fig. 10. Dorsal view of another example. 

 Fig. 11. Front view. 



(All natural size.) 



Corbula PYRIFORMIS M. (Page 35.) 



Fig. 12. Right side view. 

 Fig. 13. Dorsal view of the same. 

 Fig. 14. Front view of the same. 

 Fig. 15. Interior view of a right valve. 

 Fig. 16. Interior view of a left valve. 

 (All natural size.) 



