﻿PLATE XL 



Pygurus Hausmanni, Koch and Bunker, 



From the Coralline Oolite. 



Pygurus Hausmanni, Koch mid Bunker, p 405. The upper surface restored, natural 

 size. Most of the adult specimens of this largest British Oolitic urchin 

 are fractured and distorted, but some of the smaller individuals show 

 the i rue outline of the tesl . 



