16U CONTRIBUTION TO 



CERIOCRINUS •? PRISCUS, N. Sp., (Rowley.) 



Plate 47. Figs. 14, 15, 16, 26. ' 



The type specimen differs in several respects from Ceriocrinus (Delocrinus of 

 Miller) and may have to be removed, but it dilfers even more from Eupachycri- 

 nus and Ulocrinus, with both of which it has affinities. 



The infrabasals are five in number and concealed by the top stem joint but 

 visible from the inner side. They are probably quandrangular. 



The basals are five in number and pentaloid, three of them being almost 

 surrounded externally by the radial s. The bottom of each radial is much too- 

 broad in our figures. 



Three of the radials are irregularly seven sided, while the two adjacent to 

 the anal area are eight sided. 



The articular line for the attachment of the costal is the entire width of 

 the upper edge of the radial. 



A rather large five sided interradial rests between two radials and upon the- 

 truncated basal. This interradial supports above two plates, each of which 

 rests against a radial. 



The infrabasals lie at the bottom of a deep pit in which the lower portions 

 of both basals and radials are involved. See the shaded area in figure 26. 



The dorsal cup is low, without surface ornamentation, and composed of 

 very heavy plates. 



The stem was round and with a small circular canal. 



The type specimen is from the Kaskaskia Group, of Newman's Ridge, East 

 Tennessee. 



ELEUTHEROCRINUS CASSEDAYI, Y. & S., Rowley. 



Plate 47. Figs. 17, 18, 19, 20. 



Our figures are of a very large and fine specimen, one and one-sixteenth of 

 an inch long by nearly three-quarters of an inch broad. 



To the bottom of one ambulacrum is attached a little slender coral. 



Figure 17 is a view of the two normal ambulacra, while figure 18 is of the 

 abnormal side of the specimen showing the plate sutures. 



Figure 19 is a basal vieM' showing the usual features and figure 20 is a ven- 

 tral view showing well the abnormal ambulacrum. 



This fine specimen is from the Upper Devonian, near Charlestown, Ind. 



