TABLE V. 



Nl;W .SPUOIES OF CErNOlDEA Of THE CAEBON'U'EROUS LIMESTONE. 



Tal). V. B, Fi- 



Fiii 



Fi-. 3. 



Fig. 4. 

 Fig. 5. 



Fig. 6. 

 Fig. 7. 



Plah/ci iuKS Aincrkanus (N. S.) Biuliiiglfni. Iowa. 

 ((. View of tlic base of ca]yx. 

 h. Side view. 



Poleriocrinus rhoinbifinis (N. S.) Bui lingtoi], Iowh. 



a. Basal view. . i • ^ 



Side view, exhibiting tlie two accessory pieces. ^ - 



(. View of the side, showing the form of tlie siipei itir plates. - ■ . 



Potcrioci iints iumidus (N. S.) Chester, Illinois. 



a. Basal view. , ■ i . 



b. View of the side. 



Poleriocrinus spinnsus (N. S.) Kaslcaskia, Illinois. 

 Poleriocrinus occirlentalis (N. S.) Chester, Illinois. 



a. Side view, showing the form of the accessory pieces, and a lew of the Jonits of the arms remaining 



attached. 



b. Basal view. ' 

 Jlgassizocrimts conirus (N. S.) Chester, Illinois. 

 Synbalhocrinns denlaius (N. S.) Bm-Ungton, Iowa. 



a. Basal view, showing the tripartite character of the basal jjlate. 



b. View of the side, exhibiting the dental elevations on the superior edges of the arm-bearing plates. 



J 



