PLATE XXXI. 



Fie. 2 



Fig. 3 



Fig. 4 



Fig. 

 Fig. 



Fig. 

 Fig. 



Area {Scap/iarca) dodona Dall ; Oak Grove marl ; umljonal view ; Ion. 40 



mm. ; p. 640. 

 Area {Seapliared) santarosana Dall ; Oak Grove marl ; umbonal \'ie\v ; Ion. 



37 mm. ; p. 641. 

 Area {Seaphai'ea) eampyla Dall ; Caloosahatchie beds ; side view ; Ion. 37 



mm. ; p. 644. 

 Area {Seapliared) eampyla Dall, umbonal view, showing tortuosity of the valves ; 



Ion. 37 mm. ; p. 644. 

 Area {Anadara) aleima Dall; Caloosahatchie beds; Ion. 30 mm. ; p. 625. 

 Area {Anadard) ricstiea Tuomey and Holmes ; Caloosahatchie beds ; Ion. 54 



mm. ; p. 653. 

 Area [Aiiadara) aleima Dall ; Caloosahatchie beds ; view of interior of left 



valve ; Ion. 30 mm. ; p. 635. 

 Area (Seapharea) dodona Dall ; Oak Grove marl ; profile view of left valve ; 



Ion. 40 mm. ; p. 640. 

 Enlarged view of posterior rib sculpture of the same ; p. 640. 

 Area (Anadara) riistiea Tuomey and Holmes, umbonal view ; Ion. 54 mm. ; 



P- 653. 

 Area (Seapliared) santarosana Dall ; Oak Grove marl ; profile view of left valve ; 



Ion. 37 mm. ; p. 641. 

 Area (Seapharea) staminata Dall ; Chipola marl ; Ion. 27 mm. ; p. 641. 

 Area aquila Heilprin ; Caloosahatchie beds ; Ion. 33.5 mm.; p. 621. 

 Area (Seapliared) staminata Dall ; Miocene, Walton County, Florida ; Ion. 37 



mm. ; p. 641. 

 Area (Noeria) limula Conrad ; Caloosahatchie beds ; umbonal view ; Ion. 60 



mm. ; p. 631. 

 Area (Noctia) limula Conrad, profile view of left valve ; Ion. 60 mm. ; p. 631. 



926 



