624 ORTMANN— NAYADES OF 



Tennessee River, Little River Shoals, Knox Co., Tenn. 

 *^ Walker coll.; ij: ^ according to Lewis. 



*i. Fusconaiabarnesianatumescens *6. Lasmigona costata 



*2. Pleurobema obliquuni *7. Nephronaias ligamentina gibba 



*3. P. oviforme *8. Eurynia fabalis 



*4. P. oviforme holstonense fe- Truncilla lewisi 



*5. Elliptio dilatatus 



Tennessee River, Concord, Knox Co., Tenn. 



I = according to Lewis; t = Carn. Mus. (Ortmann, Sept. 9, '14). 



fi. Quadrula pustulosa t4. Elliptio niger 



t2. Rotundaria tubcrciilata fS- Strophitus edentuliis 



$3. Pleurobema oviforme hoist 0- 16. Nephronaias ligamentina gibba 



nense t7- Eurynia recta 



Tennessee River, Chota Shoals, Knox Co., Tenn. 

 Walker coll. 



1. Fusconaia cuncolus appressa 3. Pleurobema oviforme holsto- 



2. F. barnesiana nense 



Tennessee River {or " Holston River"), Knox Co., Tenn. 



(Summary of all species reported from the region between Brab- 

 son Ferry and Chota Shoals, mostly without exact locality.) 



I = according to Lewis ; § ^ reported by Pilsbry & Rhoads ; 

 * = Walker coll.; t = Carn. AIus. (Hartman coll. (H.), and Smith 

 coll. (S.)) ; those reported above are marked: B. = Brabson Ferry; 

 D. = Dickerson Island; K. =^ Knoxville ; L. = Little River Shoals; 

 Co. = Concord ; Ch. = Chota Shoals. 



Ji. Cumbcrlandia monodonta $12. Q. intermedia 



t§t2. Fusconaia pilaris— K. $13. Q. cylindrica 



tt3- P- pilaris lesucuriana — K. • $§ti4- Rotundaria tuberculata — K.Co. 



t4. F. cuneolus (?) $§tiS- Plethobasuscooperianus—B.K. 



*5. F. cuneolus appressa — Ch. $16. P. cyphyus 



to. F. cor t*i7. P. cyphyus compcrtns (also 

 $*7. F. barnesiana— Ch. Frierson) 



$§*8. F. barnesiana tumesccns — K.L. $18. Lexingtonia dolabelloides 



Xg. Amblcma plicata costata *ti9. Pleurobema obliquum — B.K.L. 

 tfio. Quadrula pustulosa— B. K. Co. J20. P. oliquum cordatum 



tfii. Q- metancvra—K. W21. P. obliquum rubrum—K. 



