616 



ORTMANN— NAYADES OF 



Hoist on River, Mascot, Knox Co., Tenn. 



Carn. I\Ius. (Ortmann, Sept. 6, '14; Sept. 16, '15). 



Holston River, McMillan, Knox Co., Tenn. 

 Carn. AIus. (Ortmann, Sept. 16, '13). 



1. Cumberlandia monodonta 



2. Fusconaia pilaris lesueuriana 



3. Quadrula pustulosa 



4. Q. cylindrica 



5. Rotundaria tuberculata 



6. Plethobasus cyphyus 



7. Fleurobcma obliquum rubrum 



8. Elliptio nigcr 



9. E. dilatatus 



10. Strophitus edentulus 



11. Dromus dramas caperatus 



12. Nephronaias ligamentina gibba 



13. N. pectorosa 



14. Proptera alata 



15. Eurynia nebulosa ' 



16. E. recta 



17. Lampsilis ovata 



18. L. ovata ventricosa 



19. L. fasciola 



20. Truncilla triquetra 



21. T. arcccformis 



22. T. interrupta 



23. T. stewardsoni 



24. T. florentina 



25. T. capsccformis 



