EXPLANATION OF PLATES. 



PLflTB 47. PAGE 



DOLATOCRINUS CORPOROSUS? M. & G, Rowley 157 



FIGS. 1,2, 3 — Dorsal, ventral and side views of a fine four-rayed speci- 

 men. 



DOLATOCRINUS GREENEI, M. & G., Rowley 158 



FIGS. 4, 5, 6 — Dorsal, ventral and side views of a thirteen armed speci- 

 men. 



FIG. 25 — View of one of the rays in which an interradial plate rests on 

 the upper sloping side of an axillary costal. 



DOLATOCRINUS MARSHI, Lyon, Rowley 159 



FIGS. 7, 8 — Dorsal and side views of a fine specimen. 



DOLATOCRINUS VENUSTUS, M. & G„ Rowley 160 



FIGS . 9, 10 — Side and ventral views of a specimen injured in growth by 

 an Auloporoid coral that has become imbedded in the 

 substance of the crinoid. 



MEGISTOCRINUS EXPANSUS, M. & G., Rowley 160 



FIGS; 11, 12, 13 — Dorsal, ventral and side views of a young specimen. 



CERIOCRINUS (DELOCRINUS) ? PRISCUS, N. Sp., (Rowley) 161 



FIGS. 14, 15, 16 — Basal, top and side views of the type. 

 FIG. 26 — Basal view to show the plate arrangement. 



ELEUTHEROCRINUS CASSEDAYI Y. & S., Rowley. 161 



FIGS. 17, 18, 19, 20 — Side, basal and top views of a very large and fine 

 specimen. 



METABLASTUS BIPYRAMIDALIS, Hall, Rowley. 162 



FIGS . 21, 22, 23, 24 — Side, basal and top views of a fine specimen from 

 Lanesville, Ind. 



