Leptostrophia concinna (Morris & Sharpe) 



Fig. I Internal cast of ventral valve 



2 Interior of dorsal valve 



3 Internal cast of ventral valve 



Localities: Port Howard, West Falkland, and Port Louis, 

 East Falkland 



Schuchertella agassizi (Hartt & Rathbun) 



Fig. 4 Two characteristic examples showing dorsal aspect only 



5 Interior of ventral valve 



6 A large and rather short hinged example 



7 Internal cast of ventral valve 



8 Interior of dorsal valve 

 Locality: Ponta Grossa, Brazil 



Schuchertella sulivani (Morris & Sharpe) 



Fig. 9 Internal cast of a A^entral valve 



Locality: Fox bay, AVest Falkland 



10 Internal cast of dorsal valve 



11 Interior of dorsal valve 



12 Exterior of ventral valve 



13 Dorsal aspect of conjoined valves 

 Locality: Ponta Grossa, Brazil 



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