294 ORTMANN— THE ALLEGHENIAN DIVIDE. [April 18, 



G. A. Ehrmann in the vicinity of Charleroi, Washington Co., Pa. 

 (and a few scattered additional records secured by others). The 

 following is the list of these. 



List No. 3. 



1. Fusconaia subrotunda (Lea) 



2. Fusconaia undata trigona (Lea) 



3. Fusconaia undata rubiginosa (Lea) 



4. Quadrula pustulosa (Lea) 



5. Quadrula tuberculata (Barn.) 



6. Quadrula metanevra (Raf.) 



7. Quadrula cylindrica (Say) 



8. Plethobasus cyphyus (Raf.) 



9. Pleurobema obliquum (Lam.) 



10. Pleurobema obliquum pyramidatum (Lea) 



11. Elliptio crassidens (Lam.) 



12. Elliptio dilatatus (Raf.) 



13. Symphynota costata (Raf.) 



14. Anodonta grandis Say 



15. Strophitus edentulus (Say) 



16. Ptychobranchus phase olus (Hildr.) 



17. Obliquaria reflexa Raf, 



18. Cy progenia irr or ata (Lea) 



19. Ob ovaria circulus (Lea) 



20. Ob ovaria circulus lens (Lea) 



21. Nephronaias ligamentina (Lam.) 



22. Plagiola depressa (Raf.) 



23. Paraptera gracilis (Barn.) 



24. Prop ter a alata (Say) 



25. Eurynia recta (Lam.) 



26. Lampsilis luteola (Lam.) 



2j. Lampsilis ovata ventricosa (Barn.) 

 28. Lampsilis orbiculata (Hildr.) 



The following species have not been found here, but were prob- 

 ably present in this region, since they exist both below and above : 



