PROBLEM OF THE MONTICULIPOROIDEA 2*] 



Fig. 6. Callopora multitabulata Ulr., a) cell in axial region, b) vertical of 

 same, c) vertical showing peripheral cell region, d) cell pattern of peripheral 

 region. X 10. 



Fig 7. Prasopora simulatnx Ulr., zoarium, natural size. 



Fig 8. Prasopora simulatrix Ulr., cell pattern. X 10. 



Fig. 9. Prasopora simulatrix Ulr., vertical section. X 10. 



Fig. 10. Batostoma fertile Ulr., a) cell pattern X 10, and ^surface. X 20, 

 showing mesopore' stabulaae. 



Fig. 11. Eridotrypa mutabilis Ulr. surface X 20, showing calycals. After 

 Ulrich. 



FlG. 12. Anolotichia impolita Ulr., cell pattern. X 10. 



Frederick W. Sardeson. 



Minneapolis, Minn., 



November 5, 1900. 



