362 A. J. Jukes-Browne — Tico Stages in Upper Chalk. 



is probable that the number of species ranging from them to the 

 equivalent of the Offaster pilula zone would be very much larger. 



In the Franco- Belgian region a much greater number of Echinoderms 

 has been obtained from the corresponding series of beds. The following 

 table has been compiled chiefly from the separate lists given by 

 M. de Grossouvre in the work already mentioned, but the Belgian 

 species have been corrected in accordance with Mr. Lambert's recent 

 revision of them, as published in the Mem. Mus. Roy. Belg. for 1911. 

 I have not, however, included all liis new species. The Belgian 

 occurrences are indicated by the letter B., and those in France by 

 the letter F. ; these latter include the records from Touraine and 

 the Cotentin as well as the Paris Basin : — 



TABLE V. 



ECHINODERMATA OF THE UPPER ChALK IN THE NORTH OF FRANCE AND 



Belgium. 



Species. 



Cidaris hint do, Sorig .... 



C. subhirudo, Cott 



C. pseudohirudo, Cott. 



C. sceptrifera, Mant 



C. clavigera, Koenig .... 



C. Merceyi, Cott 



C. per lata, Sorig 



G. perornata, Forbes .... 

 C. subvesiculosa, d'Orb. . . . 

 C. serrifera, Forbes .... 



C. serrata, Desor 



C. turonensis, Gauthier . 



C. Faujasi, Desor 



C. Hardouini, Desor .... 

 C lingualis, Desor (Porocidaris) 

 Cyphosonia radiatuvi, Sorig 

 C. granulosum, Goldf. 



C. corollare, Agas 



C. magnificiim, Cott 



C. Koenigi, Mant 



C. Delaunayi, Cott 



C. Corneti, Cott 



C. elongahmi, Cott 



C. remus, Cott 



C. spathulifenim, Forbes 

 Salenia hicrustata, Cott. 



S. Bourgeoisi, Cott 



S. geometrica, Ag 



iS. anthophora, Miiller 



S. Janeti, Cott 



S. Bmiissenti, Cott 



S. Heberti, Cott. ...... 



S. viaestrichtensis, Schliiter 

 Peltastes heliopJwrus, Cott. . 



^^5 



o c 



B. 



B. 



B o 



O '^ 



xB. 



xB. 



xB. 



B. 



B. 

 xB. 



X 



B. 



B. 



x 



B. 



xB. 



! xB. 



