CORRELATION 327 



etcetera, are abundant in the Fern Glen. The species which is described 

 by Miller as Spirifera temeraria is clearly identical with Cliothyris 

 prouti, which is one of the most characteristic species in the Fern Glen 

 fauna and which does not occur in the superjacent Burlington at all. 



Although a really critical comparison of the Lake Valley and Fern 

 Glen faunas must await an opportunity to study the Lake Valley collec- 

 tions, yet the comparison which is possible from the literature alone sug- 

 gests a rather close correlation of the two. 



Description of Plates 

 Plate 10 



Favosites valmeyerensis n. sp page 274 



Figure 1. View of the largest corallum observed. 



Figure 2. Longitudinal section of a corallum of average size. 

 Beaumontia americana n. sp page 274 



Figures 3-4. Two views of the type specimen. 

 Palwacis depressus M. & W page 276 



Figure 5. Vertical view of a four-celled specimen. 



Figures 6-7. Vertical and lateral views of a three-celled specimen. 

 Palwacis bifidus n. sp page 277 



Figure 8. Lateral view of one of the type specimens. 



Figures 9-11. Two lateral views and a vertical view of another of the 

 type specimens (collection of F. A. Sampson). 

 Cyathaxonia arcuatas n. sp page 269 



Figure 12. Lateral view of a large example. 



Figure 13. View of another specimen showing the calyx and col- 

 umella. 

 Cyathaxonia minor n. sp page 270 



Figures 14-17. Lateral views of four different individuals. 

 Zaphrentis cliff ordana E. & H page 272 



Figure 18. Lateral view showing the curvature. 



Figure 19. View of another example showing the calyx. 

 Zaphrentis wortheni n. sp page 273 



Figure 20. Lateral view of a specimen showing the amount of curva- 

 ture. 



Figure 21. View of another example looking into the calyx. 

 Amplexus rugosus n. sp page 271 



Figures 22, 24-25. Views of three different individuals. 



Figure 23. Longitudinal section of a fourth example. 

 Amplexus hrevis n. sp page 271 



Figures 26-29. Views of four different examples. 

 Cladoconns americanus n. sp page 275 



Figure 30. View of the type specimen. 

 Monilopora crassa ( McCoy) page 275 



Figures 31-32. Two views of the same colony. 



Figure 33. View of another colony. 



