42 



SPH^RA corrugata 

 TAB. CCCXXXV. 



Spec. Char 



■^ VERY ^ilibose heavy shell, with a coarsely corrugated 

 surface, rugae transverse obtuse, largest about the sides, 

 and extended over the ears, nearly lost in the middle. 



Lately discovered by Professor Sedgwick in the Iron 

 Sand formation, on the eastern side of Sanddown Bay, on 

 the Isle of Wight, where the beds are inclined. 



