42 



Plate VI 



All figures are natural size. 



Page 



Fig. 1. Stigmatella per sonata lobata. Portion of zoarium 28 



Fig. 2. Heterotrypa robusta. Portion of zoarium 22 



Fig. 3. Monotrypella curvata. Upper surface of zoarium 26 



Fig. 4. Rhombotrypa quadrata. Fragment of zoarium 10 



Fig. 5a, b, c. Homotrypa streetsvillensis. Fragments of zoaria 24 



Fig. 6. Constellaria cf. limitaris. Complete specimen 8 



Fig. 7. Stigmatella incrustans. Portion of zoarium incrusting a crinoid column 11 



Fig. 8. Monticulipora parasitica multipora. Portion of zoarium 27 



Fig. 9. Heterotrypa subpulchella parvulipora. Portion of zoarium 23 



Fig. 10. Stigmatella sessilis crassa. Portion of zoarium incrusting Isotelus 28 



Fig. 11. Heterotrypa definita. Almost complete zoarium 21 



