EXPLANATION OF PLATES. 



PL.f\TB 34. PAGE 



HELIOPHYLLUM MIRUM, N. Sp. 110 



FIG , 1 — Lateral view of a large individual. 

 FIG. 2 — Calix view of another example. 



HELIOPHYLLUM DISPANSUM, N. Sp. 110 



FIG . 3 — Lateral view of an ordinary sized example. 

 FIG . 4 — Calix view of a well preserved specimen. 



HELIO'rfPHYLLUM CROTALUM, N. Sp. Ill 



FIG. 5 — Lateral view, 



FIG. 6 — Calix view of another specimen. 



ZAPHRENTIS WEBERI, N. Sp. Ill 



FIG . 7 — Posterior view of a large example. 



FIGS. 8, 9-11 — Calix views of three different specimens. 



FIG. l(i — Anterior view of a small individual. 



STRIATOPORA BELLISTRIATA, N. Sp. 112 



FIG. 12 — Lateral view of a large fragment. 



f^^This drawing is not satisfactory, and will appear again in a later number. 



