PLATE XXXVI. 



From the Upper Greensand. 



Fig. 1 a. GoNioPHORUs lunulatus, Agassiz. Test, natural size. Mr. Ciinnington, 



F.G.S. (P. 163 ) 



1 b. „ „ Upper surface, showing disc magnified 



two diameters. 



1 c. „ „ Under surface, showing mouth and peri- 



stome magnified two diameters, 



1 d. „ „ Lateral view, inter-ambulacra, magnified 



two diameters. 

 Fig. 2 a. „ „ Inter-ambulacra, entire, magnified six 



diameters. Royal School of Mines. 



2 b. ,, „ Ambulacra, entire, magnified six dia- 



meters. Do. do. 



2 c. „ „ Single plate of ambulacra, magnified six 



diameters. 



From the Gault. 



Fig. 3 a. GoNioPHORUS lunulatus, Agassiz. Test, with spines, in situ, magnified two 



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

 3 b. „ „ Ambulacra and inter-ambulacra, magni- 



fied six diameters. 



