40 



Plate V 



All figures are natural size. 



Page 



Fig. 1. Homotrypella hospitalis. Complete zoarium 10 



Fig. 2. Homotrypella hospitalis 10 



Fig. 3. Heterotrypa prolifica. Portion of zoarium 9 



Fig. 4. Bythopora meeki. Fragments of zoaria 7 



Fig. 5. Bythopora meeki. Fragments of zoaria 7 



Fig. 6a, b. Hallopora onealli creditensis. Fragments of zoaria 20 



Fig. 7. Hallopora onealli creditensis. Fragment of zoarium 20 



Fig. 8. Stigmatella cf. lambtonensis. Almost complete zoarium 11 



Fig. 9. Mesotrypa patella. Portion of disc-shaped zoarium 10 



Fig. 10. Atactopora sp. Portion of zoarium 7 



Fig. 11. Ceramoporella ohioensis encrusting Homotrypella expansa 8 



