504 PROCEEDINGS OF THE ACADEMY OF [1896. 



139. Unio plicatus Lesueur. 



Reelfoot Lake, Samburg, Obion Co. (68377). 



140. Unio propinquus Lea. 



Tennessee River 2 miles above Knoxville (69212); Holston 

 River, 1 mile above junction with French Broad (69220) ; Clinch 

 River, above Patton's Ferry (68353). 



This species was described from Florence and Tuscumbia, Ala- 

 bama, localities far to the southwest of the above. 



141. Unio purpuratus Lam. 



Wolf River, near Raleigh (68702). 

 Characteristic specimens of this southwestern form. 



142. Unio pustulosus Lea. 



Reelfoot Lake, Obion Co. (68366) ; Holston River, 1 mile above 

 junction with Tennessee River (68367) ; Clinch River, above Pat- 

 ton's Ferry (68363). 



143. Unio pybasii Lea. 



Emory River, Harriman (69196) ; South Harpeth River, 6 miles 

 from Bellevue (69195) ; Watauga River, near Johnson City (69193). 

 Lea's specimens were from Tuscumbia, Ala. 



144. Unio pyramidatus Lea. 



Holston River, 1 mile above junction with French Broad (68364) ; 

 Tennessee River, 2 miles above Knoxville (69205) ; Clinch River, 

 above Patton's Ferry (69207). 



145. Unio rectus Lam. 



Holston River, 1 mile above junction with Tennessee River 

 (68372). 



146. Unio rubiginosus Lea. 



Big Harpeth River, near Bellevue (68358) ; South Harpeth 

 River, 6 miles south of Bellevue (68316). 



147. Unio securis Lea. 



Clinch River, above Patton's Ferry (68331). 



148. Unio sphaericus Lea (?). 



Tennessee River, near Williams Island, Chattanooga (68373). 



149. Unio subrostratus Say. 



Reelfoot Lake, Samburg, Obion Co. (69194). 

 160. Unio subtentus Say. 



South Harpeth River, 6 miles from Bellevue (68704) ; Tennessee 

 River, above Knoxville (68371). 



