1852.] 



LYELL — BELGIAN TERTIARY FORMATIONS. 



291 



most characteristic fossils, to Mr. Searles Wood, on my return from 

 Belgium, he came to a different conclusion, which induced me to 

 examine more critically the evidence furnished to me on this point 

 by M. de Wael. 



In the following Table I have enumerated all the species named in 

 M. de Wael's MS. lists which could be distinctly recognized, whether 

 by the aid of specimens in my own collection (chiefly presented to 

 me by M. de Wael), or by the figures of M. Nyst, and have only 

 omitted a small number respecting which M. de Wael has himself 

 expressed doubts. The results will be given at the conclusion of the 

 annexed Table. 



Table V. 



Shells from the Glauconiferous or Lower Crag of Antwerp (Crag 

 noir), in the collection of M, Norhert de Wael. 







Cor, 



Red. 



Re- 

 cent. 



1 • Corbula Qibba Oliv 



common. 



very rare. 



rare. 



common. 



rare, 

 common, 

 common, 

 very rare, 

 common, 

 common, 

 common. 



rare, 

 very rare, 

 common, 



rare, 

 rare, 

 rare, 

 rare, 

 very rare, 

 rare. 



* 



* 

 * 



•* 



* 

 * 



* 

 * 



* 



* 

 * 

 * 



* 

 * 



* 



* 



* 



* 



* 



* 



* 



* 



* 

 * 



* 

 * 



* 



2. (Poromya) granulata, Nyst ... 



3. Waelii Nvst 



Necera costellatal, Forbes and 

 Hanley. 

 4 . Mactra striata Nvst > . . . 



M. eUiptica, Brown. 

 5. Ervcina ambiffua Nvst 



6. Syndosmya prismatiea, W. Wood.., 



7. Saxicava arctica Linn 



8. Donax fra^ilis Nvst 



9. Lucina radula Montaa 



10. Dinlodonta dilatata Phil 



11. Astarte radiata. Nvst 



A. gracilis'?, Miinst. 

 12. minuta Nvst 





14. Venus multilamellata. Sow 



V. turgida, Sow. 

 15. incrassata, Sow 



1 6 . Cardium turgidum, Br under 



1 7 • Isocardia Imiulata, Nyst 



18. Cardita souamulosa Nvst 



19. corbis, Phil 



20. orbicularis. Sow 



21. Nucula denressa Nvst 



22. Philippiana, Nyst... 



common. 



rare, 

 rare. 



N. tenuis, Phil. 

 N. pygmcea, Goldf. 

 23. Westendornii. Nvst 



24 . ■ ■ Hasendonckii, Nyst 



25. liimopsis aurita, Brocc 



L. sublcevigata, Nyst. 

 26. decussata, Nyst 



very rare. 



Trigonoc(Elia pygmcea, Phil. 



