108 PROCEEDINGS OF THE ACADEMY OF 



SHELLS OF TENNESSEE. (No. 2.) 



BY JAMES LEWIS, M.D. 



Since the publication of my papers on the Shells of the Holston 

 River, and on the Land Shells of Tennessee, 1 a few supplementary 

 species have come to my notice, and conclusions have been reached 

 respecting some of the operculate univalves that occur in the small 

 streams and springs of Knox, Blount, Monroe, and adjoining 

 counties in Tennessee. In this paper conclusions are presented 

 as to what seem to be, with only one or two exceptions, known 

 species. For the identification of species and varieties in several 

 instances thanks are due to Mr. Lea, Mr. Wheatley, Dr. Hartrnan, 

 and others. Too much credit cannot be awarded to the enterprise 

 and interest with which Miss Law has extended her explorations. 



UNIONID^E. 

 Unio argenteus, Lea. 



Conasauga Creek. 



Unio Cumberlandianus, Lea. 



Conasauga Creek and other streams. Scarce. 



Unio Conradieus, Lea. 

 Conasauga Creek. 



Unio Jonesii, Lea. 



Conasauga Creek. A single specimen. 

 Unio pilaris, Lea. 



Holston and Clinch Rivers. 



Unio Pybasii, Lea. 



Various creeks and streams. Somewhat common. 

 Unio sparus, Lea. 



Various creeks and streams. Scarce. 



Unio tumescens, Lea. 



Holston and Clinch Rivers. Not abundant. 

 Margaritana minor, Lea. 



Conasauga Creek. Not abundant. 



'D' 



1 American Journal of Concliology. 



