PLATE XLVT. 



Page 

 (?) Periechoceinus Whitei (Hall) 530 



rig. 1. A very large specimen from the Upper Burliugton limestone. (Coll. W. 

 and Sp.) 



2. A smaller specimen from the same bed. (Same collection.) 



3. Side view of the calyx. (Same horizon, and same collection.) 



(?) Periechoceinus tenuidiscus (Hall) 531 



4. Lateral view of the dorsal cup. (Same collection.) 



Agarioocrinus Sampsoni S. a. Miller 505 



5. The type specimen. (Coll. F. A. Sampson.) 



LoBOCRiNus -EQuiBEACHiATUS McChesney 440 



6a. Specimen with only eighteen arms. (Coll. W. and Sp.j 

 66. Ventral aspect of the same specimen. 



Batoceinus rotadentatus Eowley and Hare 374 



7. The type specimen, showing the dorsal cup. (Coll. R. R. Rowley.) 



Batocrinus Calvini Rowley 373 



8a. Side view of the type specimen. (Coll. R. R. Rowley.) 



Sb. Another view of the calyx, showing the anal interradius to the left. 



DizYGOCRiNus EucoNus, var. ABscissus (Tiowley and Hare) . . . 431 



9. Side view of the calyx. (Coll. W. and Sp.) 



DizYGOCRiNus MONTGOMERYENSis Worthcn 428 



10. Type of the synonym " Batocrinus Gurleyi " R. and H. (Coll. R. R. 



Rowley.) 



AcTiNOCRiNus (?) ciiouTEAUENsis S. A. Miller ....... 570 



llfif.. Posterior view of the type specimen. (Coll. F. A. Sampson.) 

 lib. Ventral aspect of the same specimen. 



