402 



CRETACEOUS LAMELLIBRANCHIA. 



212 



213 



J I(i „ ■ ■204—213 — Exogyra sinuata (Sow). 204, 205, left and right valves of one individual 5 Hythe 

 iieds, Hythe; Sedgwick Museum. 206, 207, 210, Claxby Ironstone, Donnington; Sedgwick 

 Museum ; 200, 210, left valves ; 207, right valve of 206. 208, 209, Hythe Beds, Hythe. Museum 

 of .Practical Geology, No. 20S21. Left and right valves (Isevigaia form). 211, Speeton Clay 

 (zone of B. lateralis), Speeton. Mr. Lamplugh's Collection. Left valve. 212,218. Speeton Clay 

 bpeeton. Sedgwick Museum. Left and right valves of one individual. All x 4. 



