PLATE XIV. 



From the Chloritic Marl. 



Fig. 1 a. Pedinopsis Wiestii, Wright, upper surface of the test, natural size. In the 



collection of Mr. Wiest. 



1 b. ,, „ under surface, natural size. 



1 c. ,, „ lateral view, natural size. 



1 d. Anibulacral area, poriferous zones, and interambulacra, niaguitied four diameters. 



1 €. Base of an anibulacral area, showing the disposition of the pores, X four times. 



Fig. 2 a. Fistulous spine of a Diadema from the White Chalk, X six times. British 



2 d. 



Do. 



2 c. 



Do. 



2 d, e. 



Do. 







Museum 



do. 



do. 



X six times. 



do. 



do. 



X six times. 



do. 



do. 



X six times. 



From the Lower Greensand. 



Fig. 3 a. PsEUDODiADEMA ROTULARE, Agassiz, base magnified one half. In the Cabinet 



of Dr. Wright. F.R.S.E. (P. 87.) 

 3 b. „ „ lateral view do. do. 



3 c. „ „ segment of the base, do. four times. 



