1852.] LYELL — BELGIAN TERTIARY FORMATIONS. 319 



Table X. 



Showing the Relative Numbers of Species in the (liferent Divisions 

 of the Limburg Tertiary Strata^ and the Species common to the 

 several Divisiotis. 





Upper Tiimburg. 



Middle 

 Limburg. 



Lower 

 Limburg. 



A., or Rupel- 

 monde clay. 



B., or Nucula- 

 loam of Bergh. 



Total number of] 

 species of Mol- }- 

 lusca J 



Species peculiar 



43 

 20 



21 



1 



106 

 65 



106 

 68 



Species common to 



A. 

 and 

 B. 



A. and 



Middle. 



B. and 

 Middle. 



A. and 

 Lower. 



B. and 

 Lower. 



Upper 



and 

 Middle. 



Upper 



and 

 Lower. 



Middle 



and 

 Lower. 





12 



19 



16 



17 



12 



25 



22 



33 



Table XI. 



Fossils common to the Limburg Beds and to English Eocene Strata. 

 (U. M. and L. indicate Upper, Middle, and Lower Limburg.) 





Limburg 

 Divisions. 



British and other Locahties. 



1 ClflVflP-ella tibialis ? 



L. 



L. 



M. L. 



M. 



U. 



U. M. L. 

 M. L. 

 M. 

 M. 

 L. 



U. M. L. 



M. 



M. L. 

 U. L. 



U. M. L. 



Calcaire grossier. 



Calcaire grossier. 



Upper Marine, Barton, 

 Bracklesham. 



Upper Marine, Isle of Wight. 



Pegwell Bay; Heme Bay; 

 Bognor. 



Barton; Bracklesham. 



Barton. 



Barton; Calc. gross. 



Upper Marine, Hants. 



Barton (species very near, if 

 not identical— Morns). 



Lond. Clay proper, Highgate. 



Upper Marine, Isle of Wight. 



Barton; Calc. gross. 



Bracklesham (Messrs. Morris 

 and Edwards find no dif- 

 ference in the species). 



Upper Marine, Hants. 



Leguminaria papyracea 



Solecurtus compressus 





Corbula 'nisum 







T.nnirm nTViiPT'pnsin •• . 



10 Dinlodonta anicalis 











15. incrassata and varieties 



Y 2 



