EXPLANATION OF PLATES, 



PLATE 48. PAGE 



DOLATOCRINUS NODOSUS, M. & G., Rowley. 163 



FIGS. 1-2-3 — Dorsal, side and ventral views of the same specimen. 



DOLATOCRINUS SPINOSUS, M. & G., Rowley. 164 



FIG . 4 — Dorsal view of a four-rayed specimen. 



HADROCRINUS PLENISSIMUS, Lyon, Rowley. 165 



FIGS. 5-6 — Inside and outside views of the deeply concave basal region. 



DOLATOCRINUS CAELATUS, M. & G., Rowley. 165 



FIGS. 10-11-12 — Dorsal, ventral and side views of a slightly mal- 

 formed specimen. 



MEGISTOCRINUS EXPANSUS, M. & G., Rowley. 166 



FIGS. 7-8-9 — Dorsal, ventral and side views of a large, fine specimen, 

 FIGS. 13, 14, 15 — Dorsal, ventral and .side views of a beautifully pre- 

 served, small specimen. 



ISP. 



HOLOCYSTIS PAPULOSUS? M. & G., Rowley. 166 



FIGS . 16-17-18 —Side and summit views of a fine specimen. 

 All figures on this plate are of natural size. 



