600 PROCEEDINGS OF THE ACADEMY OF [1896. 



9?, diam. 19 mm.: alt. 12, diam. llram. The globular form and 

 angulation at base of columella separate this form from A. subglo- 

 bosa. 



Big Harpeth River, near Bellevue (69357). 



97. Anculosa praerosa Say. 



Holston River, 1 mile above French Broad (69244) ; Tennessee 

 River, near Chattanooga (29246) ; Tennessee River, near Knox- 

 ville (69245). Indian mound, Williams Island (69248). 



98. Anculosa ornata Anth. 



Tennessee River, near Knoxville (69340) ; Holston River, 1 mile 

 above French Broad (69339). 



PELECYPODA. 



Family OYRENIDJE Fischer. 



99. Sphaerium striatinum (Lam.). 



Big Harpeth River, near Bellevue (69325); Johnson City (69326). 



100. Sphaerium fabale Prime 



Belle Mead Farm, near Nashville (69328). 



101. Sphserium transversum (Say). 

 Samburg, Obion Co. (69327). 



102. Sphaerium partumeium (Say). 



Samburg, Reelfoot Lake, Obion Co. (69330). 



103. Pisidium abditum Ilald. 

 Knoxville (69331). 



Family UNIONID^. 



104. TJnio acuens Lea. 



Tennessee River, Williams Island (67371); Tennessee River, 

 near Knoxville (69372) ; Holston River, 1 mile above French 

 Broad (69373). 



105. TJnio alatus Say. 



Tennessee River, above Knoxville (68341). 



106. TJnio anodontoides Lea. 



Big Harpeth River, near Bellevue, Davidson Co. (68327). Wolf 

 River, below Shelby Co. (68701). 



107 TJnio arcaeformis Lea. 



Holston River, 1 mile above junction with Tennessee River 

 (68317). 



