EXPLANATION OF PLATES. 



PLf\TE 33. page; 



GENNAEOCRINUS COMPTUS, N. Sp., (Rowley.) 105 



FIGS. 1-2-3— Ventral, anal side and dorsal views of the type. 



GENNAEOCRINUS SCULPTUS, N. Sp., (Rowley.) 107 



FIGS. 4-5-6 — Ventral, side and dorsal views of the type. 



GENNAEOCRINUS COMPTUS, Var. Spiniferos, N. Var., (Rowley.) 107 



FIGS . 7-8-9 — Ventral, anal side and dorsal views of the type. 



GENNAEOCRINUS KENTUCKIENSIS? Shumard? Rowley. 108 



FIGS. 10-11-12— Ventral, anal side and dorsal views of a large, some- 

 what injured, specimen. 



AOROCRINUS CASSEDAYl, Lyon, Rowley. 108 



FIGS. 13-14-15 — Ventral, anal side and dorsal views of a fine specimen. 



DOLATOCRINUS PULCHELLUS, M. & G., Rowley. 109 



FIGS . 16-17-18 — 'Ventral, side and dorsal views of a small specimen. 



