524 NON-MARINE FOSSIL MOLLUSCA. 



PLATE 10. LARAMIE. 

 Uxio SENECTUS White (Page 432.) 



Fio. 1. Exterior view of a portion of a right valve. 

 FlO. 2. Interior view of a portion of a left valve. 

 (Both natural size.) 



UNIO GONIAMBONATUS W. (Page 433.) 



FIG. 3. Left side view, natural size. 

 FIG. 4. Dorsal view of the same. 



(Both figures are partial restorations, the type specimen having been dis- 

 torted by compression.) , 



AXODOXTA PARALLELA W. (PagO 429.) 



FIG. 5. Left side view, restored from fragments ; natural size. 

 ANODONTA PROPATORIS W. (Page 429.) 



FIG. 6. Left side view of an internal cast of large example. 

 FIG. 7. Right side view of a similar cast of a larger example. 

 FIG. 8. Dorsal view of the same. 

 FIG. 9. Fragment showing the edentulous hinge. 

 (All natural size.) 



COIIBULA SUBTRIGONALIS Meek & Hayden. (Page 442.) 



FIG. 10. Exterior view of a left valve, natural size. After Meek. 



FIG. 16. Exterior view of left valve of the variety C. perundata Meek. * 



FIG. 17. Similar view of another left valve of the same variety. 



(Both natural size, and both after Meek.) 



FIG. 15. Right side view of the variety C. tropidophora Meek, natural size. 

 FIG. 14. Right side view of the variety C. crassatelliformis Meek, natural size. 

 FIG. 11. Left side view of an example trom Crow Creek, Colorado; natural size. 

 FIG. 12. Dorsal view of the same. 

 FIG. 13. Left side view of another example from the same locality. 



