608 ORTMANN— NAYADES OF 



Emory River, Harriiiian, Roane Co., Tenn. 



J = according to Pilsbry & Rhoads; t = Carn. Miis. (Ortmann, 



May i6, '15). 



Jfi. Fusconaia cuneolns tfio- Toxolasma Uvidum 



%2. F. barnesiana tumescens $11. Medionidus plateolus 



is. Amblema plicata costata fi2. Enrynia perpurpurea 



t4. Pleiirohcma oviforme ti3- F. nebulosa 



$5. P. oviforme holstonense $14. E. vanuxemensis 



6. Elliptio niger (seen) fiS- Lampsilis virescens 



Xiy. E. dilatatus ti6. L. ovata veniricosa 



8. Lasviigona costata (seen) $17. L. fasciola 



tig. Ellipsaria fasciolaris jiS. Truncilla ttirgidula 



HoLSTON Drainage. 

 (Headwaters.) 

 Little Mocassin Creek, Gate City, Scott Co., Va. 

 Carn. Mus. (Ortmann, May 16, '13). 

 I. Lasmigona badia 2. Etirynia vanuxemensis 



Big Mocassin Creek, Willoiu Spring, Russell Co., Va. 

 Walker coll. 

 I. Fusconaia barnesiana bigbyensis 2. Pleurobetna oviforme argenfeiini 



Big Mocassin Creek, Mocassin Gap, Scott Co., Va. 

 Carn. Mus. (Ortmann, i\Iay 16, '13; Sept. 9, '15). 



1. Fusconaia cuneolus 9. Ellipsaria subtenta 



2. F. barnesiana ) 10. Medionidus plateolus 



3. F. barnesiana bigbyensis i 11. Eurynia nebulosa 



4. Quadrula cylindrica 12. E. vanuxemensis' 



5. Pleurobema oviforme argenteum 13. Lampsilis ovata vcntricosa 



6. Alasmidonta minor I4- L. fasciola 



7. A. marginata 15. Truncilla capscvformis 



8. Pegias fabula 



North Fork Hoist on River, Saltville, Smyth Co., Va. 



•|- = Carn. Mus. (Ortmann, Sept. 17, '12); *^Carn. ]\Ius. (O. 



A. Peterson, June 20, '17). 



f*i. Fusconaia barnesiana bigbyensis t*3- Pleurobema ovifortne argenteum 

 t*2. Lexingtonia dolabelloidcs con- t4. Lasmigona costata 



radi tS. Alasmidonta minor 



