492 PROCEEDINGS OF THE ACADEMY OF [1896. 



36. Polygyra elevata (Say.). 



Samburg, Reelfoot Lake (68606) ; Belle Mead Farm, near Nash- 

 ville (68604) ; Bellevue (68619) ; Chattanooga (68607), faintly, 

 broadly chestnut- banded at the periphery; bank of Emory Riv., 

 Harriman (68605) ; junction French Broad and Holston Rivers 

 (68608, 68618). 



37. Polygyra exoleta (Binn.). 



Samburg, Reelfoot Lake (68614) ; Bellevue (68613); bank Em- 

 cry Riv., Harriman (68616). 



38. Polygyra andrewsae (Binn.). 



Ten miles east of Allardt (68624) ; Roan Mt., Doe Riv. valley^ 

 3000 ft. (68625, 66305) ; top of Roan Mt. (68629) : road to Cloud- 

 land, 3500 to 5000 ft. (68626, 68628). 



Mr. E. G. Vanatta, who dissected specimens, found that the small 

 thin-shelled typical form agrees with the very large, solid shells in 

 soft anatomy, confirming Binney's observations. 



39. Polygyra albolabris (Say). 



Belle Mead Farm, near Nashville (68621) ; Chattanooga (68620). 



40. Polygyra albolabris major (Binn.). 



Vaughan's Cave, near Bellevue (68623) ; Johnson City (68629). 



Very large specimens. Dissections of them by Mr. E. G. Yanatta 

 fully confirm the anatomical distinctions indicated by Mr. Binney 

 between this species or variety and the large form of P. andreii'8(B. 



41. Polygyra thyroides (Say). 



Samburg, Reelfoot Lake (68611); Raleigh (68601); Belle Mead 

 Farm, near Nashville (68598) ; Bellevue (68610) ; Chattanooga 

 (68603) ; Knoxville (68602) ; 2 m. E. Watauga Sta., AVashington 

 Co. (68599) ; Johnson City (68609). 



42. Polygyra clausa (Say). 



Williams Isl., near Chattanooga (68631) ; Johnson City (68630). 



43. Polygyra downieana (Bid.). 



Sawyer's Springs (69072) ; Belle Mead Farm, near Nashville 

 (69073). 



44. Polygyra monodon fraterna (Say). 

 Raleigh (69074). 



45. Polygyra leai (Ward). 



Belle Mead Farm, near Nashville (68596). 



