PLATE XXXIV. 



From the Upper Greensand. 



Fig. 1 a. Peltastes UMBRELLA, y^yasse^. Test, magnified two diameters. British Museum. 



(P. 158.) 



Lateral view of the same, macfnified two dia- 

 meters. 



Liter-ambulacra, ambulacra, and poriferous zones, 

 magnified six diameters. 



Apical disc detached, magnified four diameters. 



Under surface of another test, magnified two 

 diameters. Mr. Cunnington, F.G.S. 



Apical disc of another test, magnified four dia- 

 meters. 



Test magnified, two diameters. British Museum. 



Under sm-face of do., do., do. 



Lateral view of do., do., do. 



Apical disc detached, four diameters, do. 



Ambulacra, inter-auibulacra, and poriferous 

 zones, magnified six diameters. 



