PLATE XXXIV. 



Page . 

 Unio radiatoides Lea 2^5 



Figs. 1-3. Views of three different examples of the species showing slight vari ations in form 

 and condition of preservation. 



Unio nasutoides Lea 244 



Fig. 4. Left view of one of the best preserved individuals of this species. 



5. Cardinal view of same. The valves are separated to a considerable extent along 

 the base, giving an appearance of greater depth than it actually possesses. 



Unio alatoides Lea , 249 



Fig. 6. Outline cardinal view of the specimen shown on Plate xxxiii, fig. 3. 

 Unio Roanokoides Lea 248 



Fig. 7. Outline cardinal view of the specimen, Plate xxxiii, fig. 2. 

 o ligamentinoides Lea 



Fig. 8. Outline cardinal view of the specimen, Plate xxxii, fig. 4. 



Unio ligamentinoides Lea ^ 249 



336 



