94 NON-MARINE FOSSIL MOLLUSCA. 



PLATE 7. BEAR RIVER LARAMIE. 

 Unio vetustus Meek. (Page 24.) 



Fig. 1. Left side view of a large example; a little compressed laterally. 

 Fig. 2. Right side view; tlie posterior portion a little compressed vertically. 

 Fig. 3. Dorsal view of Fig. 2 ; the left valve restored in symmetry with the right. 

 Fig. 4. Interior view of a left valve. 

 (All natural size.) 



Neiutina. naticiformis White. (Page 5'2.) 



Fig. 5. Lateral view ; enlarged. 

 Fig. 6. Opposite view of the same. 



Goniobasis enduchi W. (Page 57.) 



Fig. 7. Lateral view ; revolving lines faint. 

 Fig. 8. Another example ; revolving lines obsolete. 



Fig. 9. Apical portion of another example; revolving lines unusually distinot. 

 (All natural size.) 



