Figure 9. Page 



9a, b. Cythereis eagle fordensis Alexander, interior views of a 

 left and a right valve, lower member of Atkinson Formation, 

 Humble Oil and Refining Company's No. 1 Bennett and 

 Langdale well, Echols County, Georgia, 3,700-3,710 feet .31 



Figure 10. Page 



10a. Cythereis fredericksburgoides Swain and Brown, n. sp., 

 interior of paratype left valve, lower member of Atkinson 

 Formation, Humble Oil and Refining Company's No. 1 Ben- 

 nett and Langdale well, Echols County, Georgia, 3,700-3,710 

 feet 34 



10b. Cythereis praeornata Swain and Brown, n. name, interior 

 of holotype left valve, DeQueen Limestone, Gypsum Bluff, 

 Pike County, Arkansas 35 



■\H 



