PLATE XXV. 



Cyphommas from the Upper White Chalk. 



rig. 1 a. Cyphosoma MAGNiFicuM, .^yass2>. Natural size. Rev. T. Wiltshire. (P. 137.) 

 1 b. „ „ Upper surface, magnified twice. Do. 



1 c- „ „ Under surface, do. Do. 



1 d. „ „ Lateral view, do. Do. 



Fig. 2 a. „ „ Upper part of areas, magnified four diameters. 



2 b. „ „ Base of ambulacrum, do. do. 



2 t-v „ „ Tubercle, magnified six diameters. 



Fig. 3 f/. Cyphosoma KoNiGi, Mantell. Mould in flint. Upper surface. (P. 131.) 



3 b. „ ,, Do. Under do. 



