144 rOSSIL FAUNA. 



PLATE JjXU.— continued. 



Fig. 25. Polystcmiella crispa, of Linnaeus. From the tertiary strata of the Apennines. 



Fig. 26. Gristellaria? 



Figs. 27, & 28. Rotalia Beccarii. Apennines. 



Fig. 30. CristeUaria galea, of Lamarck. Apennines. 



Fig. 29. Cast of a species of Area ; a bivalve shell, from tertiary strata, Bordeaux. 



Fig. 31. a curious pteropodous shell {Vaginella depressa), from tertiary strata, Basterot. 



Fig. 32. This appears to be an imperfect specimen of a bivalve having a fibrous structure, like 

 Pimm. It is probably a fragment of an Inoceramus. 



