EXPLANATION OF PLATES. 



PLATE 37. PAGE 



MICHELINIA WARDI. 'V- ^ 130 



FIG. 1 — Ventral view showing the circular tubes. 

 FIG. 2 — Ventral view of another example. 

 FIG . 8 — Basal view of another individual. 



CHONOPHYLLUM PYGM/EUM. ^H %Ji 130 



FIG . 4 — Ventral view of the type specimen. 



ZAPHRENTIS TRISINUATUS. 'H ^ 131 



FIGS. 5-6-7 — Lateral views of three different specimens. 



STRIATOPORA BELLISTRIATA. ^ ^> 131 



FIG. 8 — Lateral view of a large fragment. See contribution to Indiana 

 Paleontology, part 12, page 112, plate XXX^iyfigure 12, July 18, 

 1903, for description and explanation. 



