PLATE VI. 
Fig. 1. Manicina areolata Ehr., vertical section. 
Fig. 2. Manicina areolata Ehr., specimen in which some of the ridges have been broken away. 
Figs. 3, 5, 7. Manicina areolata Ehr., showing different modes of growth. 
Fig. 4. Manicina areolata Ehr., diagram of septa seen from above. 
Fig. 6. Manicina areolata Ehr., diagram showing denticulation of the septa. 
