PLATE 57 



Zaphrentis salinensis sp. nov. 

 Page 221. 



Fig. 1. Side view of almost complete corallum. 

 Fig. 2. Side view of small individual. 



Zaphrentis comuformis sp. nov. 

 Page 221. 



Fig. 3. Side view of a large specimen. 



Fig. 4. Lateral view of small individual, slight curvature of specimen not apparent 



from this view. 

 Figs. 5-7. Side views of three individuals of different sizes. 



Favosites if. helderbergice Hall 

 Page 222. 



Fig. 8. Portion of corallum showing mural pores. 



Favosites sp. 

 Page 222. 



Figs. 9, 10. Impressions of the epitheca of the concave bases. 



Edriocrinus cf. sac cuius Hall 

 Page 223. 



Fig. 11. Lateral view of the calyx. 



