PART II. CHAPTER XV. 



183 



Fossils of the White Chalk. 



FOSSILS OF THE WHITE CHALK. 

 Fig. 144. 



Catillus Cuvicri. (Syn. Inoceramus Cuvieri, Sow.) 



Fig. 147. 



Fig. 145. 



Crania Parisiensis, 

 inferior or attached 

 valve. 



Fig. 148. 



Fig. 150. 



Fig. 146. 



Plagiostoma 

 Hoperi. 



Plagiostoma spinosum. 



Fig. 149. 



Ostrea carinata, 

 also in Upper Green-sand. 



Fig. 151. 



Fig. 152. 



Terebratula 



octoplicata, 



(Var. of T. plicatilis.) 



Torebratula pumilus. 

 (Magas pumilua, Sow.) 



