1913- ] ORTMANN— THE ALLEGHENIAN DIVIDE. 309 



Clinch and Powell Rivers. However, to the west of these, on the 

 Allegheny Plateau, there are other rivers, tributary to the Ohio, the 

 fauna of which was hitherto entirely unknown. Since a quite dif- 

 ferent fauna turns up in the Tennessee, it would be surely interest- 

 ing to know something about these intermediate western rivers, and 

 for this reason I made several trips into this region, and was able 

 to collect the following data, first for the Levisa Fork of Big Sandy 

 River, at Prestonsburg, Floyd Co., Ky. 



1. Fuscouaia siibrotnnda (Lea) 



2. Crcnodonta plicata uiidiilata (Barn.) 



3. Onadrnla pnstnlosa (Lea) 



4. Onadrnla tnbcrcnlata (Barn.) 



5. Elliptio crassidens (Lam.) 



6. Symphynota- costata (Raf.) 



7. Oboz'aria circnhis lens (Lea) 



8. Nephronaias ligamentina (Lam.) 



9. Avrygdalonaias elegans (Lea) 



10. Proptera alaia (Say) 



11. Enrynia recta (Lam.) 



12. Lampsilis ovata vent vie osa (Barn.) 



In the Licking River, at Farmer, Rowan Co., Ky., I found: 



1. Crcnodonta plicata nndnlata (Barn.) 



2. Quadrida pnstnlosa (Lea) 



3. Qnadnda tuberculata (Barn.) 



4. Pleurobema obliquiim coccineum (Conr.) 



5. Elliptio dilatatns (Raf.) 



6. Symphynota costata (Raf.) 



7. Anodonta grandis Say 



8. Strophitns cdcntnlns (Say) 



9. Ptycliobranclms phaseolns (Hildr.) 



10. Obovaria circnlns lens (Lea) 



11. Nephronaias ligamentina (Lam.) 



12. Proptera alata (Say) 



13. Lampsilis luteola (Lam.) 



14. Lampsilis ovata ventricosa (Barn.) 



