I9I3.] ORTMANN— THE ALLEGHENIAN DIVIDE. 311 



4. Symphynota costata (Raf.) 



5. Alasmidonta minor (Lea) 



6. Alasmidonta fahida (Lea) 



7. Alasmidonta marginata (Say) 



8. Strophitus edentulus (Say) 



9. Ptychohranchus suhtentus (Say) 

 10. Nephronaias perdix (Lea) 



*ii. Nephronaias copei (Lea) 



12, Medionidus conradicus (Lea) 



13. Eurynia nebulosa (Conr.) 

 *I4. Eurynia dispansa (Lea) 



15. Eurynia vanuxemensis (Lea) 



16. Lampsilis ovata ventricosa (Barn.) 



17. Lampsilis multiradiata (Lea) 



Clinch, in Tazewell Co. 



1. Fusconaia bursa- past oris (Wright) 



2. Fusconaia sp.? 



3. Quadrida cylindrica strigillata (Wright) 



4. Pleurohema (probably 2 species) 



5. Elliptio dilatatus (Raf.) 



6. Symphynota holstonia (Lea) 



7. Symphynota costata (Raf.) 



8. Alasmidonta minor (Lea) 



9. Alasmidonta marginata (Say.) 



10. Strophitus edentulus (Say) 



11. Ptychohranchus subtentus (Say) 



12. Medionidus conradicus (Lea) 



13. Eurynia perpurpurea (Lea) 



14. Eurynia nebulosa (Conr.) 



15. Eurynia planicostata (Lea) ' 



16. Lampsilis ovata ventricosa (Barn.) 



17. Lampsilis multiradiata (Lea) 



18. Truncilla haysiana (Lea) 



19. Truncilla capsaeformis (Lea) 



These are altogether about 26 species, of which only 6 have 

 occurred in our previous lists (Elliptio dilatatus, Symphynota cos- 



