488 PROCEEDINGS OF THE ACADEMY OP [1896. 



by the forms taken at Reelfoot Lake, has the typical northern Missis- 

 sippi fauna, with a few southwestern species. The special character 

 of the Tennessee River system is well known to conchologists ; but 

 among the species herein catalogued from middle and east Tennes- 

 see will be found a number of forms described from Alabama, 

 Louisiana and other localities to the south and west, such as Unio 

 propinquus, U. }>ybasii, U. turgidus, U. tiimescens, U. caliginosus, 

 etc. 



PULMONATA. 



AGNATHA. 



Family CIRCINARIID^ Pilsbry. 

 Selenitidse Fischer = Macrocyclis and Selenites Auct. 



1. Circinaria^ concava (Say). 



Bellevue (68677)^ Banks of Emory Riv., Harriman (68676); 

 Johnson City (68679) ; Road to Cloudland, Roan Mt., 5000 ft. 

 (68675). 



AULACOPODA. 



Family ZONITID^. 



2. Vitrea arborea (Say). 



Samburg, Reelfoot Lake (68689) ; Raleigh (69104) ; Sawyer's 

 Springs (69105) ; Banks Emory Riv., Harriman (68688, 68692) ; 

 Allardt (68691) ; 5 m. S. W. Greeneville (68693) ; Greeneville 

 (68694) ; road to Cloudland, Roan Mt., 3500 to 5000 ft. (68690). 



3. Vitrea indentata (Say). 

 Bellevue (68696, 68697). 



4. Omphalina kopnodes (W. G. Binn.). 



Samburg, Obion Co. (69106) ; Bellevue (69107). 



5. Omphalina fuliginosa (Griff.). 



Banks of Emory Riv., Harriman (68635). 



6. Omphalina laevigata (Pfr.). 



Raleigh (68639) ; bank Richland Creek (" Belle Mead "), David- 

 son Co. (68642) ; Bellevue (68637) ; Sawyer's Springs, AValden's 

 Ridge (68638) ; bank Emory Riv., near Harriman (68641) ; John- 

 son City (68643). 



* Clrcinaria Beck, 1837 — Macrocyclis Binney = Selenites Fischer, 1878, 

 not Selenites Hope, 1840. 



* Braketed numbers refer to the catalogue entries of the Academy of Natu- 

 ral Sciences of Philadelphia. 



