Nuculana inornata (Sharpe) 



Fig. I, 2 Opposite sides of the same specimen 



3 Another characteristic example 



Locality: Ponta Grossa, Brazil 



Palaeoneilo rhysa Clarke 



Fig. 4, 5 Left and right valves 



6 Enlargement of surface ornament of figure 4 

 Locality: Ponta Grossa, Brazil 



Nuculites pacatus Reed 



Fig. 7 Interior cast of conjoined valves with strong clavicular 

 ridges 

 Locality: Jaguariahyva, Sao Paulo, Brazil 

 8 Sculpture cast of right valve 

 Locality: Ponta Grossa, Brazil 



Palaeoneilo magnifica Clarke 



(See plate 15) 



Fig. 9 Internal cast of right valve, showing part of hinge. The 

 borings are those of the sponge Clionolithus 

 p r i s c u s (McCoy) 

 Locality: Ponta Grossa, Brazil 



168 



