542 NON-MARINE FOSSIL MOLLUSCA. 



PLATE 28. EOCENE. 

 UNIO CLINOPISTHUS White. (Page 434.) 



FIG. 1. Left side view, natural size. 

 FIG. 2. Dorsal view of the same. 



UNIO SHOSHONENSIS W. (Page 435.) 

 FIG. 3. Left side view, natural size. 



UNIO HAYDEXI Meek. (Page 435.) 



FIG. 4. Right side view, natural size. 



FlG. 5. Left side view of a smaller example* 



UNIO WASHAKI.ENSIS M. (Page 435.) 



FIG. 6. Left side view, natural size. 



FIG. 7. Right side view of a sandstone cast. 



FIG. 8. Interior view of a fragment of a right valve. 



UNIO TELLINOIDES Hall. (Page 435.) 

 FIG. 9. Copy of Hall's original figure. 



PLANORBIS (GYBAULUS) MILITARIS W. (Page 447.) 



FIG. 10. Upper view, enlarged. 



FIG. .11. Under view of the same example. 



BYTHINELLA GREGARIA M. (Page 466.) 



FIG. 12. Lateral view, enlarged. 

 FIG. 13. Opposite view of the same. 



BULIMUS FLORIDANUS Conrad. (Page 454.) 

 FIG. 14. Copy of Conrad's original figure. 



MELANIA CLAIBORNENSIS Heilprin. (Page 460.) 



FIG. 15. Lateral view, much enlarged, together with an outline of natural size. After 

 Heilprin. 



