

130 NON-MARINE FOSSIL MOLLUSCA. 



PLATE 25. LARAMIE. 



Physa copei White. (Page 44.) 



Fig. 1. Lateral view, natural size. 

 Fig. 2. Opposite view of the same. 



Physa pblix W. (Page 44.) 



Fig. 3. Lateral view of an imperfect example, natural size. 



Bulinus DisJtwcTUS W. (Page 45.) 



Fig. 4. Lateral view, natural size. 

 Fig. 5. Opposite view of the same. 



Btjlinds atavtjs W. (Page 44.) 



Fig. 6. Lateral view, natural size. 

 Fig. 7. Opposite view of the same. 



Bolinus lostgi^sculus Meek & Hayden. (Page 45.; 



Fig. 8. Two lateral views of the same example, natural size. After Meek. 



BULLNUS ItHOMBOIDEUS M. & H. (Page 45.) 



Fig. 9. Lateral view,. natural size. After Meek. 



BULINUS SUBELOXGATUS M. & H. (Page 44.) 



Fig. 10. Lateral view, natural size. 



Fig. 11. Opposite view of the same. After Meek. 



Helix kaxabexsis W. (Page 48.) 



Fig 12. Lateral view of an internal cast of the last volutions, showing the grooves left 



by the internal ridges near the aperture; natural size. 

 Fig. 13. Upper view of the same. 

 Fig. 14. Under view of the same. 



Columna teres M. & H. (Page 48.) 



Fig. 15. Lateral view, natural size, and enlarged. After Meek. 



Columna verjiiicula M. & H. (Page 48.) 



Fig. 16. Lateral view, natural size, and enlarged. After Meek. 



VlVTPARUS PRUDENTIUS W. (Page 61 J 



Fig. 17. Lateral view, natural size. 

 Fig. 18. Opposite view of the same. 



Viviparus panguitchensis W. (Page 61.) 



Fig. 19. Lateral view of an internal cast. 



Fig. 20. Opposite view of another example, showing a part of the surface markings. 

 Fig. 21. Lateral view of another example, showing a portion of the natural surface 

 of the shell. 

 (All natural size. ) 



Vivipakus reynoldsianus M. & H. (Page 61* ) 



Fig. 22. Lateral view, natural size. 



Fig. 23. Opposite view of the same example. 



Thadmastus limn/eiformis M. & H. (Page 48.) 



Fig. 24. Apertural and opposite views of an example not quite adult; natural size. 



