418 



CRETACEOUS LAMELLIBRANCHTA. 



Figs. 2-19 — 252.— Exogyra digitata (Sow.). Upper Greensand (zone of Peclen asper). Left valves. 249, 

 near Lyme Regis ; British Museum, No. 52. 250, White Nothe ; British Museum, No. L. 4914. 251, 

 Evershot ; Museum of Practical Geology, No. 20956. 252, Weston, South Devon ; Sedgwick 

 Museum ; convex variety. All x f. 



1868. Ostrea digitata, A. Briart and F. L. Cornet. Meule de Bracquegnies 



(M<-m. cour. et Mem. des 

 Sav. etrangers, vol. 

 xxxiv), p. 47, pi. iv, figs. 

 1,2. 



1869. — — H. Coquand. Mori. Ostrea, Terr. Cret., p. 142, pi. xli, 



figs. 6—8. 

 1871. — F. J. Pictet and G. Campiche. Foss. Terr. Cret. Ste. 



Croix (Mater. Pal. 

 Suisse, ser. 5), p. 317. 



