PLATE XLIV. 



Fi'om the Upjier White Chalk. 



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

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



^' it 3i 



^' >1 >) 



J- " >) 



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



arabulacral 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. 



