550 NON-MARINE FOSSIL MOLLUSCA. 



PLANORBIS LUNATA Conrad. (Pago 448.) 

 FIGS. 24 and 25. Copies of Conrad's original figures. 



LIMN^EA MEEKII Evans & Shnmard. (Page 446.) 



FI-G. 2(>. Lateral view of a largo example, natural size. 

 FIG. 27. Opposite view of a smaller example. After Meek. 



LIMN^A SIIUMARDI Meek & Haydcn. (Page 446.) 



FIG. 28. Lateral view, natural size. 



FIG. 29. Opposite view of the same. After Meek. 



(PoLYiuiYTis) KiNGii Meek. (Pago 446.) 

 FIGS. 30 and 31. Copies of Meek's original figures, natural size. 

 HELIX LEIDYI Hall & Meek. (Page 455.) 



FIG. 32. Lateral view, natural size. 



FIG. 33. Apical view of the same example. After Meek. 



HELIX (ZONITES) MARGINICOLA C. (Pago 453.) 

 FIG. 34. Copy of Conrad's original figure. 



PHYSA SECALIXA E. & S. (Page 450.) 



FIG. 35. Lateral view, natural size. 



FIG. 36. Opposite view of the same. After Meek. 



LATIA DALLII White. (Page 451.) 



FIG. 37. Dorsal view, natural size. 

 FIG. 38. Lateral view of the same example. 

 FIG. 39. Dorsal view of another example. 



FIG. 40. Similar view of another example, showing a portion of the shell broken 

 away, revealing the large lunate shelf extending forward from the beak. 



