NON-MARINE FOSSIL MOLLUSCA. 143 



PLATE 32. MIOCENE AND PLIOCENE? 



Melaxia sculptilis. Meek. (Page 55.) 



Fig. 1. Lateral view, natural size. After Meek. 



Melania .soiskculptilis M. (Page 55.) 



Fig. 2. Lateral view, natural size. After Meek. 



Melania taylori Gabb. (Page 55.) 



Fig. 3. Lateral view, natural .size. After Gabb. 



Lithama axtiqua G. (Page f>9.) 



Fig. 4. Lateral view, showing the aperture, natural size. After Gabb. 



CAltlNIFEX (VORTICIFEX) lJIXNEYI M. (Page 42.) 



Fig. 5. Lateral view, natural .size, showing the aperture. 

 Fig. ti. Upper view of the same example. After Meek. 



Caeinifex (Vorticifex) tryoni M. (Page 42.) 



Fig. 7. Lateral view, natural size, showing the aperture. 

 Fig. 8. Upper view of tho same example. 

 FIG. 9. Under view of the same. After Meek. 



Ancylub undulatus M. (Pago 45.) 



Fig. 10. Upper view anil lateral outline, natural size. After Meek. 



Sl'lI/ERIUM RUGOSTJM M. (Page 34.) 



Fig. 11. An example of not quite adult-size, enlarged two diameters. 



Fig. 12. A larger example, enlarged two diameters. 



Fig. 13. Outline showing the convexity of the valves. After Meek. 



Spii/ERIcm idahoejstse M. (Page 34.) 



Fig. 14. An imperfect example, natural size. 



Fig. 15. Outline showing tho convexity of the valves. After Meek. 



Planohbls vetustus Meek &, Hayden. (Page 12.) 



Fig. lti. Under view, natural size. 



Fig. 17. Upper view of the same example, enlarged. 



Fig. )8. Peripheral view of the same, more enlarged. After Meek. 



Pi.anorbis LEIDYI M. & H. (Page 42.) 



Fig. 19. Upper view, natural size. 



Fig. 20. Peripheral view of the same, enlarged, showing the aperture. 



Fig. 21. Under view of the same, less enlarged. After Meek. 



Planorbis xebrascexsis Evans '& Shumard. (Page 42.) 



Fig. 22. Upper view, natural size. 



Fig. 23. Peripheral view of the same, enlarged. After Meek. 



