Figure 5. Page 



5a, b. Fossocytheridea lenoirensis Swain and Brown, n. gen., 

 n. sp., interior views of right and left valve paratypes re- 

 spectively, beds of Washita age, DuPont water well No. 6, 

 Lenoir County, North Carolina, 723-826 feet 20 



Figure 6. Page 



6a. Clithrocytheridea halifaxensis Swain and Brown, n. sp., in- 

 terior of holotype left valve, beds of Washita age, Caledonia 

 Prison Farm water well T-4, Halifax County, North Carolina, 

 151-156 feet 22 



6b. Perissocytheridea odomensis Swain and Brown, n. sp., in- 

 terior of paratype left valve, beds of Washita age, Caledonia 

 Prison Farm water well T-2, Halifax County, North Carolina, 

 191-196 feet 23 



6c. Schuleridea ivashitaensis (Alexander), interior of a left valve, 

 lower member of Atkinson Formation, Humble Oil and Re- 

 fining Company's No. 1 Bennett and Langdale well, Echols 

 County, Georgia, 3,700-3,710 feet 



19 



