540 NON-MARINE FOSSIL MOLLUSCA. 



HYALINA? EVANSI Meek & Hayden. (Page 452.) 

 FIG. 26. Outline views, enlarged. After Meek. 



HYALINA? OCCIDENTALS M. & H. (Page 452.) 



FIG. 27. Upper, under, and peripheral views of the type-specimen of Meek & Hay- 

 den. After Meek. 



HELIX! VETUSTA M. & H. (Page 454.) 



FIG. 28. Apertural and opposite views of the type-specimen of Meek & Hayden; 

 natural size. After Meek. 



HELIX EVAN8TONEN8IS White. (Page 454.) 



FIG. 29. Lateral view, enlarged. 



FIG. 30. Opposite view of the same example. 



FIG. 31. Under view of the same example. 



VITRINA OBLIQUA M. & H. (Page 452.) 



FIG. 32. Lateral view of type specimen of Meek & Hayden, natural size. 

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



GONIOBASIS? SUBTORTUOSA M. & H. (Page 463.) 



PIG. 34. Apertural and opposite views of the type specimen of Meek & Hayden, natural 

 size. After Meek. 



HYDROBIA UTAHENSIS W. (Page 466.) 

 FIG. 35. Lateral view, enlarged. 



HYDROBIA SUBCONICA Meek. (Page 465.) 

 FIG. 36. Outline lateral view, enlarged ; copy of Meek's original figure. 



HYDROBIA? EULIMOIDES M. (Page 465.) 

 FIG. 37. Outline lateral view, enlarged; copy of Meek's original figure. 



HYDROBIA RECTA W. (Page 466.) 

 FIG. 38. Lateral views of two fragments, enlarged. 



HYDROBIA ANTHONYI M. & H. (Page 465.) 

 FIG. 39. Lateral view, natural size and enlarged. After Meek. 



HYDROBIA WARRENANA M. & H. (Page 465.) 

 FIG. 40. Lateral view, natural size and enlarged. After Meek. 



