PLATE XXVI. 



Cyphosomas from the Upper White Chalk. 



Fig. 1 a, b, c. Cyphoscma Konigi. Spoon-shaped spines, magnified. The Rev. T. 



Wiltshire, F.G.S. 



2. „ „ Club-shaped spine, do. Do. 



;i a, h. „ „ Awl-shaped spine, magnified six times. Do. 



4, 5, 0. „ „ Conical and spoon-shaped, do. Do. 



Fig. 7 a. Cyphosoma corollare, Klein. Test, natm'al size. British Museum. (P. 134.) 

 7 b. „ „ Upper third of an ambulacrum, magnified six 



times. 



7 c. „ „ Inter-ambulacral plates, do. do. 



8 «. „ „ Upper surfaceof another test, magnified twice, do. 

 8 h. „ „ Lateral view of do., do., do. 

 9. „ „ Under surface of do., do., do. 



10. „ „ Ambulacral area, magnified six times. The 



Rev. T. Wiltshire, F.G.S. 



