PLATE XLIV. 



From the Upper White Chalk. 



Fig. la. Salenia magnifica, Wright. Test, natural size. British Museum. (P. 184.) 

 b t „ „ Upper surface of test, magnified two diameters. 



C- >> >> 



€• >> }> 



/• " " 



9- 



h. „ „ Portion of the base of ambulacral and inter - 



ambulacral areas, magnified six times. 



i. „ „ Single plate and portion of ambulacra, magnified 



six diameters. 



k. „ ,, Lateral view of a primary tubercle, magnified 



six times. 



/. „ „ Oblong mouth-opening and peristome, magni- 



fied four times. 



Under surface, 





do. 



do. 



Lateral view, 





do. 



do. 



Apical disc, 





do. 



four do. 



Inter-ambulacral 



area, 



do. 



do. 



Ambulacral 



do. 



do. 



do. 



