PLATE XLVII. 



Inoceeamus (continued.) 

 Figs. 

 1, 2. /. concentricus, Park. 1, Upper Greensand, Blackdown. Bristol 

 Museum. Left valve. 2, Red Limestone, Hunstanton. Sedgwick 

 Museum, Cambridge. Left valve. (P. 265.) 



3 — 14. /. concentricus var. suhsnlcatus, Wiltsh. Gault, Folkestone. Left 

 valves. (P. 268.) 



3, 4. Sedgwick Museum, Cambridge. 



5. Museum of Practical Geology, No. 21154. 



6. British Museum, No. L5003. 

 7 — 9. Sedgwick Museum. 



10. British Museum, No. L9664. 

 11 — 13. Sedgwick Museum. 



14. Museum of Practical Geology, No. 21153. 



15 — 20. /. sulcatns. Park. Gault, Folkestone. 15, British Museum, No. 

 L11797 ; a, left valve; h, right valve; c, dorsal view. 16 — 20,, 

 Sedgwick Museum. 16, 18 — 20, left valves; 17, anterior view. 

 (P. 269.) 



