the Neighbourhood of Ldshon. 133 



careous beds assume a more independent character than in Portugal, where T could 

 draw no line between them and the beds above and below. 



Espichel Limestone : the Gres vert inferieur of the Morea is succeeded, according 

 to the authors above quoted, by blue limestone with beds of argillaceous marl, 

 evidently the equivalents of this Espichel limestone. In both countries, it contains 

 an union of species of the green sand and the coral-rag ; yet the evidence of its 

 connexion with the cretaceous series is very great ; for Trigonia scabra, considered 

 by M. Deshayes as one of the most characteristic shells of the green sand, was 

 found in the lowest beds of this formation, as well as Exogyra plicata, the most abun- 

 dant shell of the Hippurite limestone. Were this the only bed of the series con- 

 taining shells of our oolites, it might be referred to the Neocomian epoch, and the 

 comparison of the beds of the red sandstone formation with the upper and lower 

 green sands might be admitted ; but as all the Portuguese deposits from the Hip- 

 purite limestone to the Espichel limestone, contain some shells of the coral-rag, I 

 think it safer to refer the whole to the cretaceous epoch, without attempting to 

 identify the beds separately. 



I have not sufficient information about the strata below the Espichel limestone, 

 to attempt to compare them with the English formations. 



