29 



Foraminifertc. PLATE 11. 



Polyeystinae. 



Acanthometrina. Spinous, with sexagonal cells, beautifully and FIGS, i & 2. 

 regularly arranged. 



Lithocyclia (Ocellus). Flos 1 2 3 



Frustrella (Concentrica). 



FIG. 1. 



FIG. 2. 



