EXPLANATION OF PLATES. 



FIG. 2 — Calix view of a compound example. 



FIG . 3 — Lateral view of another compound specimen. 



FIG. 4 — Calix view of another compound example. 



FIG. 5 — Lateral view showing parietal budding. 

 FIG. 6 — View of the calix of a simple example. 

 FIG. 7 — View of the calix of another individual. 



FIG . 8 — Lateral view showing calycinal budding. 

 FIG. 9 — View of the calix of a simple example. 



PLATE. 6. PAGE 



HELIOPHYLLUM GURLEYI, N. Sp, 16 



FIG. 1 — Calix view of a compound example. 



CYSTIPHYLLUM GEMMATUM, N. Sp. 11 



CYSTIPHYLLUM OSSICULUM, N. Sp. 12 



CYSTIPHYLLUM GEMMULA, N. Sp. 12 



CYSTIPHYLLUM LACINIATUM, N. Sp. 13 



FIG. 10 — Lateral view with a portion of the cup broken away to show 



the invaginated appearance. 

 FIG. 11 — Calix view of another individual. 

 FI G. 12 — Posterior view of another example. 



