1896.J NATURAL SCIENCES OF PHILADELPHIA. 491 



27. Polygyra fraudulenta Pils. 



Samburg, Reelfoot Lake (68565) ; Belle Mead Farm, near Nash- 

 ville (68566) ; Williams Isl., near Chattanooga (68569) ; bank 

 Emory Riv., Harriman (68567) ; bank Doe Riv.. 4000 ft., Roan 

 Mt. (68564). 



28. Polygyra tridentata (Say). 



Sawyer's Springs, Walden Ridge (68557) ; Greeneville (68561) ; 

 5 m. 8. W. Greeneville, bank Nolachucky Riv. (68558) ; Allardt 

 (68562) ; near junction Holston and French Broad Rivs. (68559) ; 

 Johnson City (68560) ; banks Doe Riv., Roan Mt., 4000 ft. 

 (68563). 



29. Polyg/ra palliata (Say). 



Samburg, Reelfoot Lake (68555) ; Johnson City (68556). 



30. Polygyra obstricta (Say). 



Bellevue (68553) ; bank Emory Riv., Harriman (68552). 



31. Polygyra appressa perigrapta Pils. 



Samburg (68547) ; Raleigh (68544) ; Belle Mead Farm, near 

 Nashville (6^557) ; Chattanooga (68542) ; Sawyer's Springs, Wal- 

 den Ridge (68549) ; bank Emory Riv., Harriman (68548) ; Knox- 

 ville (68541). 



32. Polygyra subpalliata Pils. 



Roan Mt., 3000 to 6000 ft. (69064, 69065, 69066). 



This is the " Mesodon wetherhyi " of most collections. It is a far 

 more common species in museums than that, occurring abundantly 

 at Roan Mt. 



33. Polygyra wetherbyi (Bid.). 



Emory Riv., near Harriman, Roane Co. (69067). 



The specimens of this excessively rare species agree with one of 

 the original lot collected by Prof. A. G. Wetherby. It has been 

 found before in Whitley (and Campbell?) counties. 



34. Polygyra wheatleyi (Bid.). 



Roan Mt., 3000 to 6000 ft. (69068, 69069, 69070). 



35. Polygyra sp. ? 



Allardt (69071). 



A single specimen, defective in the umbilical region, of an appar- 

 ently new species. 



