EXPLANATION OF PLATES. 



PLRTE II. PAGE 



DIPHYPHYLLUM PROLATUM, N. Sp. 27 



FIG. 1. — Ventral view of a large corallum. 



ZAPHRENTIS NANUS, N. Sp. 32 



FIGS. 2-3-4. — Views of the posterior sides, showing 

 the proliferous growth. 



FIG. 5-6. — View of the calix showing the prolifer- 

 ous growth. This feature is shown in one- 

 third of all the specimens in my collection. 

 All figures are from different examples. 



HELIOPHYLLUM JACKSONI, N. Sp. 



FIG. 7. — Lateral view of a composite example, 

 showing a portion of the calix of each co- 

 rallite. 



FIG. 8. — Posterior view of another simple example, 

 showing a portion of the calix. 



F I Q . 9. — Posterior view of a well preserved example, 

 with a portion of the cup, broken away to 

 show the lamellae. 



FIG. 10. — Calix view of another example. 



32 



BLOTHROPHYLLUM BELLICINCTUM, N. Sp. 33 



