626 ORTMANN— NAYADES OF UPPER TENNESSEE DRAINAGE. 



Tennessee River, Chattanooga, Hamilton Co., Tenn. 



$ = according to Pilsb'ry & Rhoads ; * = Walker coll. (Adams, 

 Oct. 22, 'oi ; t^Carn..]\Ius. (Juny coll.). 



:i:i. Quadrula pustulosa %7. Elliptio dilatatus 



*2. Q. metancvra $8. Ellipsaria fasciolaris 



$3. Plethobasus cooperianus X*g. Dronius dramas 



$4. Pleurobema obliqiium $10. Nephronaias ligamentina gibba 



tS- P- oviforme holstonense fii. Truncilla torulosa 



X6. Elliptio niger 



